Tootfinder

An adaptive acceleration scheme for phase-field fatigue computations
Jonas Heinzmann, Pietro Carrara, Marreddy Ambati, Amir Mohammad Mirzaei, Laura De Lorenzis
https://arxiv.org/abs/2404.07003

An adaptive acceleration scheme for phase-field fatigue computations
Phase-field models of fatigue are capable of reproducing the main phenomenology of fatigue behavior. However, phase-field computations in the high-cycle fatigue regime are prohibitively expensive, due to the need to resolve spatially the small length scale inherent to phase-field models and temporally the loading history for several millions of cycles. As a remedy, we propose a fully adaptive acceleration scheme based on the cycle jump technique, where the cycle-by-cycle resolution of an approp…

“ME/CFS, like long Covid, hits women harder, so, the thinking goes, it must be all in the mind.”
(The article does not claim that this is true, but strongly argues against this attitude)
‘You don’t want to get better’: the outdated treatment of ME/CFS patients is a national scandal | George Monbiot

"#MECFS saps sufferers of energy and basic physical and cognitive functions.
…the fact that there is neither a diagnostic test nor a validated treatment, places a special duty of rigour on doctors and researchers. But patient care has been compromised, and useful research inhibited, by the conviction of practitioners that ME/CFS is

‘You don’t want to get better’: the outdated treatment of ME/CFS patients is a national scandal: From harmful ‘therapies’ to social services referrals, the notion that this illness is psychosomatic is having devastating effects | George Monbiot”
https://www.

Modeling of progressive high-cycle fatigue in composite laminates accounting for local stress ratios
P. Hofman, F. P. van der Meer, L. J. Sluys
https://arxiv.org/abs/2403.05356

Modeling of progressive high-cycle fatigue in composite laminates accounting for local stress ratios
A numerical framework for simulating progressive failure under high-cycle fatigue loading is validated against experiments of composite quasi-isotropic open-hole laminates. Transverse matrix cracking and delamination are modeled with a mixed-mode fatigue cohesive zone model, covering crack initiation and propagation. Furthermore, XFEM is used for simulating transverse matrix cracks and splits at arbitrary locations. An adaptive cycle jump approach is employed for efficiently simulating high-cyc…

The Reddit post discusses the high burnout rate among cybersecurity practitioners, usually SOC analysts, majorly due to alert fatigue. The user asks for opinions on other reasons for burnout in the industry and potential solutions to the problem. https://reddit.com/r/cybersecurity/comments/1cpv5kn/

“ME/CFS, like long Covid, hits women harder, so, the thinking goes, it must be all in the mind.”
(The article does not claim that this is true, but strongly argues against this attitude)
‘You don’t want to get better’: the outdated treatment of ME/CFS patients is a national scandal | George Monbiot

Lessons I learned in a Ukrainian military safe house: https://benborges.xyz/2024/03/10/lessons-i-learned.html

This https://arxiv.org/abs/2402.00775 has been replaced.
link: https://scholar.google.com/scholar?q=a

Adaptive Control for Triadic Human-Robot-FES Collaboration in Gait Rehabilitation: A Pilot Study
The hybridisation of robot-assisted gait training and functional electrical stimulation (FES) can provide numerous physiological benefits to neurological patients. However, the design of an effective hybrid controller poses significant challenges. In this over-actuated system, it is extremely difficult to find the right balance between robotic assistance and FES that will provide personalised assistance, prevent muscle fatigue and encourage the patient's active participation in order to acceler…

To Reach the Unreachable: Exploring the Potential of VR Hand Redirection for Upper Limb Rehabilitation
Peixuan Xiong, Yukai Zhang, Nandi Zhang, Shihan Fu, Xin Li, Yadan Zheng, Jinni Zhou, Xiquan Hu, Mingming Fan
https://arxiv.org/abs/2403.05264

To Reach the Unreachable: Exploring the Potential of VR Hand Redirection for Upper Limb Rehabilitation
Rehabilitation therapies are widely employed to assist people with motor impairments in regaining control over their affected body parts. Nevertheless, factors such as fatigue and low self-efficacy can hinder patient compliance during extensive rehabilitation processes. Utilizing hand redirection in virtual reality (VR) enables patients to accomplish seemingly more challenging tasks, thereby bolstering their motivation and confidence. While previous research has investigated user experience and…

Survival probability of structures under fatigue: a data-based approach
Francois-Baptiste Cartiaux, Frederic Legoll, Alex Libal, Julien Reygner
https://arxiv.org/abs/2403.05397

Survival probability of structures under fatigue: a data-based approach
This article addresses the probabilistic nature of fatigue life in structures subjected to cyclic loading with variable amplitude. Drawing on the formalisation of Miner's cumulative damage rule that we introduced in the recent article [Cartiaux, Ehrlacher, Legoll, Libal and Reygner, Prob. Eng. Mech. 2023], we apply our methodology to estimate the survival probability of an industrial structure using experimental data. The study considers both the randomness in the initial state of the structure…

This https://arxiv.org/abs/2212.04550 has been replaced.
link: https://scholar.google.com/scholar?q=a

Modern Statistical Models and Methods for Estimating Fatigue-Life and Fatigue-Strength Distributions from Experimental Data
Engineers and scientists have been collecting and analyzing fatigue data since the 1800s to ensure the reliability of life-critical structures. Applications include (but are not limited to) bridges, building structures, aircraft and spacecraft components, ships, ground-based vehicles, and medical devices. Engineers need to estimate S-N relationships (Stress or Strain versus Number of cycles to failure), typically with a focus on estimating small quantiles of the fatigue-life distribution. Estim…

2/6
Cyanocobalamin's significance in the human body cannot be overstated. A groundbreaking study published in the "Journal of Clinical Pharmacology" in 2012 illuminated the profound impact that Vitamin B12 has on individuals suffering from fatigue. The research revealed that supplementation with cyanocobalamin notably enhances energy levels, thereby combating tiredness and lethargy. This is because Vitamin B12 plays a vital role in converting food into glucose, which acts as fuel for the body.

Amimir dl cuy
#BatikAir #Aviation

Batik Air: Pilot dan kopilot tertidur selama 28 menit ketika menerbangkan pesawat, Kemenhub beri 'teguran keras' – Apa itu pilot fatigue dan bagaimana mencegahnya? - BBC News Indonesia
Komite Nasional Keselamatan Transportasi (KNKT) merekomendasikan pentingnya “panduan dan prosedur terperinci” untuk mengidentifikasi kelelahan awak pesawat, menyusul insiden “serius” melibatkan dua pilot maskapai Batik Air yang tertidur secara bersamaan saat menerbangkan pesawat dengan rute penerbangan Kendari-Jakarta.

Myalgic encephalomyelitis (ME), also often known as chronic fatigue syndrome (CFS), already affects tens of millions of people worldwide.
But according to new research, we could be facing twice as many cases in the near future.
A study from a team in Germany, published in Internal Medicine, says that the long-lasting effects of COVID-19 on many individuals will mean they could meet the diagnostic criteria for ME/CFS.
That's where a related study from experts at the Me…

The Number of People With Persistent Fatigue Could Soon Double. Here's Why.
Myalgic encephalomyelitis (ME), also often known as chronic fatigue syndrome (CFS), already affects tens of millions of people worldwide.

Monbiot flagging up ME/CFS myths
George Monbiot explains the bad science around Graded Exercise Therapy etc.
Good to see awareness of this atrocity becoming more mainstream.
"Despite an overwhelming weight of evidence, the old believers, including Sharpe and Wessely, have continued to try to justify their model ... This is not how science should work."
#MECFS #science #medicine #GeorgeMonbiot #SimonWessely #MichaelSharpe

Kuleba: 'Ukraine fatigue' is not based on evidence: https://benborges.xyz/2024/02/25/kuleba-ukraine-fatigue.html

The correlative studies one could do stemming from this …
From: @…
https://universeodon.com/@mimarek/112402190199888716

Carbon Filter: Real-time Alert Triage Using Large Scale Clustering and Fast Search
Jonathan Oliver, Raghav Batta, Adam Bates, Muhammad Adil Inam, Shelly Mehta, Shugao Xia
https://arxiv.org/abs/2405.04691

Carbon Filter: Real-time Alert Triage Using Large Scale Clustering and Fast Search
"Alert fatigue" is one of the biggest challenges faced by the Security Operations Center (SOC) today, with analysts spending more than half of their time reviewing false alerts. Endpoint detection products raise alerts by pattern matching on event telemetry against behavioral rules that describe potentially malicious behavior, but can suffer from high false positives that distract from actual attacks. While alert triage techniques based on data provenance may show promise, these techniques can …

Trying out the "Intel One Mono" #font (I've used consolas until now). The curly braces are unexpected when you type them, but looking at a whole page of code they are not the eye sore I thought they'd be.
https://<…

Charles Roper (@charlesroper@indieweb.social)
Attached: 1 image New programming font designed by Frere-Jones Type for Intel. Interesting. "Identifying the typographically underserved low-vision developer audience, Frere-Jones Type designed the Intel One Mono typeface in partnership with the Intel Brand Team and VMLY&R, for maximum legibility to address developers' fatigue and eyestrain and reduce coding errors. A panel of low-vision and legally blind developers provided feedback at each stage of design." https://github.com/intel/intel-o…

On the Fly Robotic-Assisted Medical Instrument Planning and Execution Using Mixed Reality
Letian Ai, Yihao Liu, Mehran Armand, Amir Kheradmand, Alejandro Martin-Gomez
https://arxiv.org/abs/2404.05887

On the Fly Robotic-Assisted Medical Instrument Planning and Execution Using Mixed Reality
Robotic-assisted medical systems (RAMS) have gained significant attention for their advantages in alleviating surgeons' fatigue and improving patients' outcomes. These systems comprise a range of human-computer interactions, including medical scene monitoring, anatomical target planning, and robot manipulation. However, despite its versatility and effectiveness, RAMS demands expertise in robotics, leading to a high learning cost for the operator. In this work, we introduce a novel framework usi…

"You can overextend yourself even in the name of regeneration. And you can choose to stop doing so. Your body will recover if you let it. Enthusiasm, creativity and motivation will return. It’s okay to stumble, as long as you course correct when you notice."
Jonas Gröner
#fatigue #regeneration

Very timely - new UK advocacy and activist site for people with chronic but often unacknowledged conditions such as ME/CFS (myalgic encephalomyelitis/chronic fatigue syndrome)
#disability
#disabilityrights

THE CHRONIC COLLABORATION
She’s faking it for attention and clout'. 'They’re all just doing it for the benefits or perks'. 'They just want to be famous on TikTok'.

System and Method to Determine ME/CFS and Long COVID Disease Severity Using a Wearable Sensor
Yifei Sun, Suzanne D. Vernon, Shad Roundy
https://arxiv.org/abs/2404.04345

System and Method to Determine ME/CFS and Long COVID Disease Severity Using a Wearable Sensor
Objective: We present a simple parameter, calculated from a single wearable sensor, that can be used to objectively measure disease severity in people with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) or Long COVID. We call this parameter UpTime. Methods: Prior research has shown that the amount of time a person spends upright, defined as lower legs vertical with feet on the floor, correlates strongly with ME/CFS disease severity. We use a single commercial inertial measurement u…

This https://arxiv.org/abs/2307.16262 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Validating polyp and instrument segmentation methods in colonoscopy through Medico 2020 and MedAI 2021 Challenges
Automatic analysis of colonoscopy images has been an active field of research motivated by the importance of early detection of precancerous polyps. However, detecting polyps during the live examination can be challenging due to various factors such as variation of skills and experience among the endoscopists, lack of attentiveness, and fatigue leading to a high polyp miss-rate. Deep learning has emerged as a promising solution to this challenge as it can assist endoscopists in detecting and cl…

I don’t think I was even 50 years old 1 day when I got a text message from my pharmacy telling me I should schedule a shingles vaccination. 💉🤪
Today I had the first of two shots and I could DEFINITELY feel the fatigue. 💀🪦 I had intended to run last night, but thunderstorms wrecked that plan. So, tonight it was, even knowing that it might be rough. Any run completed is a good run. #Running<…

Driver Fatigue Prediction using Randomly Activated Neural Networks for Smart Ridesharing Platforms
Sree Pooja Akula, Mukund Telukunta, Venkata Sriram Siddhardh Nadendla
https://arxiv.org/abs/2404.10684

Driver Fatigue Prediction using Randomly Activated Neural Networks for Smart Ridesharing Platforms
Drivers in ridesharing platforms exhibit cognitive atrophy and fatigue as they accept ride offers along the day, which can have a significant impact on the overall efficiency of the ridesharing platform. In contrast to the current literature which focuses primarily on modeling and learning driver's preferences across different ride offers, this paper proposes a novel Dynamic Discounted Satisficing (DDS) heuristic to model and predict driver's sequential ride decisions during a given shift. Base…

Friday Links 24-06
It has been two years since Russia's invasion and beginning of the unprovoked war of aggression against Ukraine.
There is fatigue and attention, and headlines are turning to the next topic.
I'm not as down about it now as I was two years ago, as it really got under my skin.
Now I stay mostly current with the news to not forget. I am impressed by The Guardian's continued reporting on this.

Friday Links 24-06
The flag of Ukraine at Kyiv City Hall It has been two years since Russia's invasion and beginning of the unprovoked war of aggression agains...

‘You don’t want to get better’: the outdated treatment of ME/CFS patients is a national scandal | George Monbiot | The Guardian https://www.theguardian.com/commentisfree/2024/mar/12/chronic-fatigue-syndrome-me-treatments-socia…

#PhantastikPrompts 29.02.:
Beschreibe einen kleinen Moment des Triumphs deiner Hauptfigur.
Zwar von Fatigue geplagt und aus Gründen per Wasserschiff statt Luftschiff, aber mit Kind und neuer Partnerperson in Sorlys einzuziehen, dürfte für Namalenia einer werden.
(Ob das auch so wird, sehe ich dann.)

#ME/CFS
The headline is wrong. It should read:
"The outdated treatment of ME/CFS patients is an international scandal"
https://www.theguar…

On Equivalence of Likelihood-Based Confidence Bands for Fatigue-Life and Fatigue-Strength Distributions
Peng Liu, Yili Hong, Luis A. Escobar, William Q. Meeker
https://arxiv.org/abs/2403.12757

On Equivalence of Likelihood-Based Confidence Bands for Fatigue-Life and Fatigue-Strength Distributions
Fatigue data arise in many research and applied areas and there have been statistical methods developed to model and analyze such data. The distributions of fatigue life and fatigue strength are often of interest to engineers designing products that might fail due to fatigue from cyclic-stress loading. Based on a specified statistical model and the maximum likelihood method, the cumulative distribution function (cdf) and quantile function (qf) can be estimated for the fatigue-life and fatigue-s…

🔊 #NowPlaying on fip
Laundromat:
🎵 Bureau de fatigue
#Laundromat
https://open.spotify.com/track/61X5NU7X8BCzNwAyA3vFUa
https://laundromatmusica.bandcamp.com/track/bureau-de-fatigue

@… Seems like you might be interested in this?
https://typo.social/@letterror/112169065606969860

A look at the collapse of dating apps' usability, which can be blamed on the paid subscription model and the near monopoly the apps have over the dating world (Magdalene J. Taylor/New York Times)
https://www.nyt…

Opinion | Dating Apps Like Hinge, Tinder and Bumble Are Getting Worse
Hinge, Tinder, Bumble: They used to be free and maybe too good to be true. Now paid versions and fatigue are making dating apps worse — and expensive.

Imagine a 30-hour workweek!
A thing of the utopian future, right?


Well, what if I told you the Senate passed a bill to establish such a workweek back when the latest entertainment was whatever FDR had on his mind for that night’s fireside chat?


Sen. Bernie Sanders and United Auto Workers President Shawn Fain write in an op-ed that the 1933 Senate legislation eventually (under pressure from corporate America) turned into the formalized 40-hour workweek establish…

You deserve a 32-hour workweek. Even the 1930s Senate thought so.
Plus: The Trump veepstakes. Chronic fatigue syndrome. AI productivity.

C’est peut-être une déformation professionnelle, mais en tant qu’informaticien, je dirais que « ça marche pour moi » n’est pas nécessairement une recommandation.

The New York Times' thriving games business prompts others to try to replicate its success, such as with Hearst's acquisition of Puzzmo, but games coverage lags (Nathan Grayson/Aftermath)
https://aftermath.site/new-york-times-wordle-connections-puzzmo…

Why Big Publications Like The New York Times Are Making Games (But Barely Covering Them) - Aftermath
"The ad market is terrible. There's very real news fatigue. There's tons of alternative sources for news that aren't even news agencies."

Blu-Rays are still a superior viewing experience to most every other format. https://www.theverge.com/24044151/streaming-subscription-prices-dvd-collection

Streaming fatigue is making DVDs look like the better option
Although streaming services are jam-packed with engaging shows and movies, the overwhelming amount of content and rising prices are driving me back to DVDs.

Series B, Episode 10 - Voice from the Past
BLAKE: Space fatigue, is that what they're saying?
VILA: Yeah.
https://blake.torpidity.net/s/210/204 📺 B7B9

I know we had a bunch of smart scholars who zeroed in on the phenomena of Zoom fatigue during the height of the pandemic, but who is doing work on the inescapable awkwardness of all Zoom sign-offs? I’ve never experience a sign-off that wasn’t slightly cringe inducing.

This https://arxiv.org/abs/2309.15041 has been replaced.
initial toot: https://mastoxiv.page/@arX…

Estimation of fatigue life of TiN coatings using cyclic micro-impact testing
This paper studies the behaviour of a thin titanium nitride (TiN) coating (1.5 um thick) on a tool steel substrate material under dynamic and cyclic impacts through an approach combining experimental testing and computational modelling. Dynamic impact testing was used to investigate the load-dependent dynamic hardness and assess the energy-dissipation capabilities of the coating system. In cyclic impact tests, the materials experienced permanent plastic deformation in each cycle, ultimately lea…

This https://arxiv.org/abs/2305.04139 has been replaced.
initial toot: https://mastoxiv.page/@arX…

Tibial Strains are Sensitive to Speed, but not Grade, Perturbations During Running
A fatigue-failure process is hypothesized to govern the development of tibial stress fractures, where bone damage is highly dependent on the peak strain magnitude. To date, much of the work examining tibial strains during running has ignored uphill and downhill running despite the prevalence of this terrain. This study examined the sensitivity of tibial strains to changes in running grade and speed using a combined musculoskeletal-finite element modeling routine. Seventeen participants ran on a…

Path differences between quasistatic and fatigue cracks in anisotropic media
Xinyuan Zhai, Thomas Corre, Ataollah Mesgarnejad, Alain Karma, Veronique Lazarus
https://arxiv.org/abs/2404.08451

Path differences between quasistatic and fatigue cracks in anisotropic media
The propagation path of quasistatic cracks under monotonic loading is known to be strongly influenced by the anisotropy of the fracture energy in crystalline solids or engineered materials with a regular microstructure. Such cracks generally follow directions close to minima of the fracture energy. Here we demonstrate both experimentally and computationally that fatigue cracks under cyclic loading follow dramatically different paths that are predominantly dictated by the symmetry of the loading…

Mock Mania: Primetime Cornerback Top Pick In Las Vegas Raiders’ 7-Round Draft https://www.yardbarker.com/nfl/articles/mock_mania_primetime_cornerback_top_pick_in_las_vegas_raiders_7_round_draft/s1_1646…

Mock Mania: Primetime Cornerback Top Pick In Las Vegas Raiders’ 7-Round Draft
The NFL Draft is here, so which route should the Las Vegas Raiders general manager take? It sounds like there could be a lockdown corner at 13. It’s finally upon us: the 2024 NFL Draft. I’m sure you’ve got draft fatigue already, but if you’ll indulge me and the Raider Ramble, here’s my take on the mock draft exercise. Things are going to be interesting over the course of three days, and the Las Vegas Raiders own eight total picks over the course of the seven rounds. That can, of cours…

On Software Ageing Indicators in OpenStack
Yevhen Yazvinskyi, Jasmin Bogatinovski, Jorge Cardoso, Odej Kao
https://arxiv.org/abs/2404.16446 https://…

On Software Ageing Indicators in OpenStack
Distributed systems in general and cloud systems in particular, are susceptible to failures that can lead to substantial economic and data losses, security breaches, and even potential threats to human safety. Software ageing is an example of one such vulnerability. It emerges due to routine re-usage of computational systems units which induce fatigue within the components, resulting in an increased failure rate and potential system breakdown. Due to its stochastic nature, ageing cannot be dire…

This https://arxiv.org/abs/2307.14914 has been replaced.
initial toot: https://mastoxiv.page/@…

Reduced stress propagation leads to increased mechanical failure resistance in auxetic materials
Materials with negative Poisson ratio have the counter-intuitive property of expanding laterally when they are stretched longitudinally. They are accordingly termed auxetic, from the Greek auxesis meaning to increase. Experimental studies have demonstrated auxetic materials to have superior material properties, compared with conventional ones. These include synclastic curvature, increased acoustic absorption, increased resilience to material fatigue, and increased resistance to mechanical failu…

Alcohol intolerance may be linked to long COVID, specifically the post-viral fatigue syndrome (PVFS) type.
Long COVID refers to persistent symptoms that occur more than three weeks after the initial COVID-19 infection.
According to several anecdotal reports, alcohol intolerance, which is characterized by reactions like nausea, low blood pressure, fatigue, and dizziness when consuming alcohol, may be a unique symptom of long COVID.

Alcohol Intolerance After COVID: Symptoms, Causes, Treatment
Alcohol intolerance is not a common side effect of long COVID, but people have reported it happening to them.

Analysis of Fatigue-Induced Compensatory Movements in Bicep Curls: Gaining Insights for the Deployment of Wearable Sensors
Ming Xuan Chua, Yoshiro Okubo, Shuhua Peng, Thanh Nho Do, Chun Hui Wang, Liao Wu
https://arxiv.org/abs/2402.11421

Analysis of Fatigue-Induced Compensatory Movements in Bicep Curls: Gaining Insights for the Deployment of Wearable Sensors
A common challenge in Bicep Curls rehabilitation is muscle compensation, where patients adopt alternative movement patterns when the primary muscle group cannot act due to injury or fatigue, significantly decreasing the effectiveness of rehabilitation efforts. The problem is exacerbated by the growing trend toward transitioning from in-clinic to home-based rehabilitation, where constant monitoring and correction by physiotherapists are limited. To address this challenge, developing wearable sen…

3/7
The Secret Behind Boundless Energy ⚡
Battling perpetual fatigue? Vitamin B2 might hold the key to rejuvenation. It plays a crucial role in converting food into energy, streamlining a more efficient energy production process within our bodies. A deficiency in Riboflavin hampers our ability to transform carbohydrates into adenosine triphosphate (ATP), the essential fuel for cellular activities, leading to diminished energy levels that can make daily tasks daunting.

This https://arxiv.org/abs/2211.11677 has been replaced.
link: https://scholar.google.com/scholar?q=a

Slow fatigue and highly delayed yielding via shear banding in oscillatory shear
We study theoretically the dynamical process of yielding in cyclically sheared amorphous materials, within a thermal elastoplastic model and the soft glassy rheology model. Within both models we find an initially slow accumulation, over many cycles after the inception of shear, of low levels of damage in the form strain heterogeneity across the sample. This slow fatigue then suddenly gives way to catastrophic yielding and material failure. Strong strain localisation in the form of shear banding…

The Reddit user is questioning the focus on authenticated vulnerability scans, especially in cases where an InfoSec program is still developing. The user argues that such scans, which require privileged access, may contribute to vulnerability fatigue in an immature organization. They suggest a primary focus on threats not requiring privileged access, similar to securing a building against an intruder without keys. https://reddit.com/r/cybersecurity/comments/1bp383a/

SIM2VR: Towards Automated Biomechanical Testing in VR
Florian Fischer, Aleksi Ikkala, Markus Klar, Arthur Fleig, Miroslav Bachinski, Roderick Murray-Smith, Perttu H\"am\"al\"ainen, Antti Oulasvirta, J\"org M\"uller
https://arxiv.org/abs/2404.17695

SIM2VR: Towards Automated Biomechanical Testing in VR
Automated biomechanical testing has great potential for the development of VR applications, as initial insights into user behaviour can be gained in silico early in the design process. In particular, it allows prediction of user movements and ergonomic variables, such as fatigue, prior to conducting user studies. However, there is a fundamental disconnect between simulators hosting state-of-the-art biomechanical user models and simulators used to develop and run VR applications. Existing user s…

Monitoring Based Fatigue Damage Prognosis of Wind Turbine Composite Blades under Uncertain Wind Loads
Chizhi Zhang, Hua-Peng Chen
https://arxiv.org/abs/2404.10021

A Griffith description of fracture for non-monotonic loading with application to fatigue
Subhrangsu Saha, John E. Dolbow, Oscar Lopez-Pamies
https://arxiv.org/abs/2404.13466

A Griffith description of fracture for non-monotonic loading with application to fatigue
With the fundamental objective of establishing the universality of the Griffith energy competition to describe the growth of large cracks in solids \emph{not} just under monotonic but under general loading conditions, this paper puts forth a generalization of the classical Griffith energy competition in nominally elastic brittle materials to arbitrary \emph{non-monotonic} quasistatic loading conditions, which include monotonic and cyclic loadings as special cases. Centered around experimental o…

Identification and characterization of three-dimensional crack propagation mechanism in the Aluminium alloy AA2024-T3 using high-resolution Digital Image Correlation
Vanessa Sch\"one, Florian Paysan, Eric Breitbarth
https://arxiv.org/abs/2404.01852

Identification and characterization of three-dimensional crack propagation mechanism in the Aluminium alloy AA2024-T3 using high-resolution Digital Image Correlation
Fatigue crack growth is usually a three-dimensional problem, but it is often simplified to two dimensions to reduce complexity. However, this study investigates the relationships between microscopic effects such as crack kinking, shear lips, and plasticity that are present in reality. Therefore, crack propagation tests were carried out on 2-mm-thick MT-160 specimens of AA2024-T3 sheet material in L-T and T-L orientation. Using high-resolution digital image correlation (DIC), the plastic zone wa…

This https://arxiv.org/abs/2307.14914 has been replaced.
initial toot: https://mastoxiv.page/@…

Reduced stress propagation leads to increased mechanical failure resistance in auxetic materials
Materials with negative Poisson ratio have the counter-intuitive property of expanding laterally when they are stretched longitudinally. They are accordingly termed auxetic, from the Greek auxesis meaning to increase. Experimental studies have demonstrated auxetic materials to have superior material properties, compared with conventional ones. These include synclastic curvature, increased acoustic absorption, increased resilience to material fatigue, and increased resistance to mechanical failu…

If you don’t think this country is sliding toward theocracy, you’re not paying attention.
The drumbeat of incidents moving us ever closer to the seemingly inescapable future is so steady and frequent that we’ve developed outrage fatigue — we’ve grown numb.
For instance, on Tuesday, the Alabama Supreme Court ruled that frozen embryos are children, and that destruction of those embryos, even by accident, is subject to the state’s Wrongful Death of a Minor Act.
In his concurri…

Opinion | Alabama’s I.V.F. Ruling Shows Our Slide Toward Theocracy
To those advancing Christian nationalism, the will of God counts more than the will of the American people.

An investigation of fatigue damage growth in composites materials using the vibration response phase decay
Matias Lasen, Dario Di Maio, Damaso De Bono, Michelle Peluzzo
https://arxiv.org/abs/2404.14834

An investigation of fatigue damage growth in composites materials using the vibration response phase decay
The increasing use of polymer composites in industry asks for the creation of better, faster and cost-effective methods to detect the damage state of such materials. This work presents the investigation of the phase decay , $ΔΦ$, as a new parameter to characterise crack growth in composites materials utilising an experimental framework of High Frequency Fatigue Testing (HFFT), a framework where the excitation occurs at vibration resonance. The proposed methodology empirically relates the crac…

Plasma-wall interaction in laser inertial fusion reactors: novel proposals for radiation tests of first wall materials
J. Alvarez Ruiz, A. Rivera, K. Mima, D. Garoz, R. Gonzalez-Arrabal, N. Gordillo, J. Fuchs, K. Tanaka, I. Fernandez, F. Briones, J. Perlado
https://arxiv.org/abs/2402.10235…

Plasma-wall interaction in laser inertial fusion reactors: novel proposals for radiation tests of first wall materials
Dry-wall laser inertial fusion (LIF) chambers will have to withstand strong bursts of fast charged particles which will deposit tens of kJ m$^{-2}$ and implant more than 10$^{18}$ particles m$^{-2}$ in a few microseconds at a repetition rate of some Hz. Large chamber dimensions and resistant plasma-facing materials must be combined to guarantee the chamber performance as long as possible under the expected threats: heating, fatigue, cracking, formation of defects, retention of light species, sw…

This https://arxiv.org/abs/2104.03893 has been replaced.
link: https://scholar.google.com/scholar?q=a

Multimodal Fusion of EMG and Vision for Human Grasp Intent Inference in Prosthetic Hand Control
Objective: For transradial amputees, robotic prosthetic hands promise to regain the capability to perform daily living activities. Current control methods based on physiological signals such as electromyography (EMG) are prone to yielding poor inference outcomes due to motion artifacts, muscle fatigue, and many more. Vision sensors are a major source of information about the environment state and can play a vital role in inferring feasible and intended gestures. However, visual evidence is also…

Trump campaign cash crunch: Small-dollar fatigue, major donor nerves
Evidence from earlier in the 2024 election cycle already hinted at an erosion of Trump’s small-dollar donor base, or support of $200 or less.
In 2023, Trump’s reelection campaign raised 62.5% less money from small-dollar donors than it did in 2019, the year before the last presidential election.
In January of this year, Trump’s campaign reported raising around $3 million from small-dollar donors, according…

A Griffith description of fracture for non-monotonic loading with application to fatigue
Subhrangsu Saha, John E. Dolbow, Oscar Lopez-Pamies
https://arxiv.org/abs/2404.13466

A Griffith description of fracture for non-monotonic loading with application to fatigue
With the fundamental objective of establishing the universality of the Griffith energy competition to describe the growth of large cracks in solids \emph{not} just under monotonic but under general loading conditions, this paper puts forth a generalization of the classical Griffith energy competition in nominally elastic brittle materials to arbitrary \emph{non-monotonic} quasistatic loading conditions, which include monotonic and cyclic loadings as special cases. Centered around experimental o…

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A pivotal study published in Phytomedicine (2010) revealed that Rhodiola not only significantly reduces symptoms of stress but also combats fatigue. This double-blind placebo-controlled trial highlighted Rhodiola's efficacy in improving life-stress symptoms after just three days of intake, underscoring its potential as a natural yet powerful stress reliever.

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Additionally, Panax Ginseng has shown promise in combating fatigue. Research published in "PLOS One" in 2013 highlighted the herb's ability to reduce physical and mental tiredness, attributed to its anti-inflammatory properties and optimization of mitochondrial function. In a world where burnout is increasingly common, natural ways to boost energy levels are crucial.

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Beyond stress reduction, Rhodiola Rosea boasts impressive cognitive-enhancing capabilities. Research underscores its ability to improve concentration, memory, and mental performance, particularly during periods of diminished cognitive function due to stress or fatigue. A peer-reviewed study elucidated Rhodiola's positive impact on mental performance under stress, offering hope for those seeking a natural cognitive boost.

Depth-Resolved Characterization of Centrifugal Disk Finishing of Additively Manufactured Inconel 718
Kenneth M. Peterson, Mustafa Rifat, Edward C. DeMeter, Saurabh Basu, Darren C. Pagan
https://arxiv.org/abs/2404.19084

Depth-Resolved Characterization of Centrifugal Disk Finishing of Additively Manufactured Inconel 718
Surface characteristics are a major contributor to the in-service performance, particularly fatigue life, of additively manufactured (AM) components. Centrifugal disk finishing (CDF) is one of many rigid media, abrasive machining processes employed to smooth the surfaces and edges of AM components. Within the general family of abrasive machining processes currently applied to AM, CDF is moderate in terms of material removal rate and the inertial forces exerted. How CDF alters the underlying mic…

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The evolving narrative of Panax Ginseng as a valuable component of holistic health strategies speaks to the symbiosis of tradition and modern science. Whether seeking cognitive enhancement, fatigue reduction, or immune system support, this ancient herb may just be the ally needed for overall well-being.

Defect design in ferroelectrics -- new insights on agglomeration
Sheng-Han Teng, Anna Gr\"unebohm
https://arxiv.org/abs/2403.10467 https://

Defect design in ferroelectrics -- new insights on agglomeration
Functional properties of ferroelectrics and their change with time depend crucially on the defect structure. In particular, point defects and bias fields induced by defect dipoles modify the field hysteresis and play an important role in fatigue and aging. However, a full understanding on how order, agglomeration and strength of defect dipoles affect phase stability and functional properties is still lacking. To close these gaps in knowledge, we screen these parameters by \textit{ab\ initio} ba…

Grasp Force Assistance via Throttle-based Wrist Angle Control on a Robotic Hand Orthosis for C6-C7 Spinal Cord Injury
Joaquin Palacios, Alexandra Deli-Ivanov, Ava Chen, Lauren Winterbottom, Dawn M. Nilsen, Joel Stein, Matei Ciocarlie
https://arxiv.org/abs/2402.08020

Grasp Force Assistance via Throttle-based Wrist Angle Control on a Robotic Hand Orthosis for C6-C7 Spinal Cord Injury
Individuals with hand paralysis resulting from C6-C7 spinal cord injuries frequently rely on tenodesis for grasping. However, tenodesis generates limited grasping force and demands constant exertion to maintain a grasp, leading to fatigue and sometimes pain. We introduce the MyHand-SCI, a wearable robot that provides grasping assistance through motorized exotendons. Our user-driven device enables independent, ipsilateral operation via a novel Throttle-based Wrist Angle control method, which all…

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The heart, also stands to gain from L-carnitine's bounty. Research delineates its cardioprotective properties, with particular emphasis on its ability to mitigate the risk factors associated with cardiovascular disease. A landmark study detailed in "The American Journal of Clinical Nutrition" (2013) demonstrated that L-carnitine supplementation led to significant improvements in patients with heart failure, including enhanced exercise capacity and reduced symptoms of fatigue.

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For those grappling with low energy, magnesium may serve as the much-needed elixir. Essential in ATP creation – the cornerstone of cellular energy – magnesium deficiency can usher in fatigue and compromised physical performance. Research targeting athletes discovered enhanced triathlon times following a four-week magnesium supplementation, attributed to efficient energy production and optimized oxygen utilization.