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1. High-cycle fatigue of a titanium alloy: the role of microstructure in slip irreversibility and crack initiation

Author:
Tan, Changsheng; Sun, Qiaoyan; Zhang, Guojun; Zhao, Yongqing
Source:
Journal of materials science 2020 v.55 no.26 pp. 12476-12487
ISSN:
0022-2461
Subject:
fatigue strength,   etc   ; alloys; microstructure; titanium;     Show all 4 Subjects
Abstract:
... The influence of microstructure on slip irreversibility and crack initiation during high-cycle fatigue of a titanium alloy has been explored. The results indicate that the fatigue strength of lamellar microstructure is higher than the bimodal microstructure. The underlying microstructure and strain partition below the fatigue crack origins have been revealed through electron backscattered diffract ...
DOI:
10.1007/s10853-020-04845-7

2. Plasma Activin A and Decorin in Exercised Purebred Arabian Horses – Preliminary Study

Author:
Kędzierski, Witold; Kowalik, Sylwester; Mojsym, Wioleta; Janczarek, Iwona; Tkaczyk, Ewelina
Source:
Journal of equine veterinary science 2021 v.102 pp. 103638
ISSN:
0737-0806
Subject:
fatigue strength,   etc   ; adults; blood plasma; collagen; cortisol; elastin; exercise; purebreds; skeletal muscle; veterinary medicine;     Show all 10 Subjects
Abstract:
... Development of the musculoskeletal system occurs, in part, through an impact on regulatory proteins, such as activin A and decorin. Activin A induces atrophic effects on skeletal muscle, and decorin regulates the formation of connective tissue proteins like collagen and elastin in tendons and ligaments. The aim of this study was to evaluate the influence of different intensities of exercise on blo ...
DOI:
10.1016/j.jevs.2021.103638

3. Variants in the Myostatin Gene and Physical Performance Phenotype of Elite Athletes

Author:
Ginevičienė, Valentina; Jakaitienė, Audronė; Pranckevičienė, Erinija; Milašius, Kazys; Utkus, Algirdas
Source:
Genes 2021 v.12 no.5
ISSN:
2073-4425
Subject:
fatigue strength,   etc   ; adenines; alleles; exons; homozygosity; introns; muscles; myostatin; phenotype; physical activity;     Show all 10 Subjects
Abstract:
... The MSTN gene is a negative regulator of muscle growth that is attracting attention as a candidate gene for physical performance traits. We hypothesised that variants of MSTN might be associated with the status of elite athlete. We therefore sought to study the potential role of MSTN in the physical performance of athletes by analysing the whole coding sequence of the MSTN gene in a cohort of Lith ...
DOI:
10.3390/genes12050757

4. Dynamic analysis of scarf adhesive joints in CFRP composites modified with Al2O3-nanoparticles under fatigue loading at different temperatures

Author:
Khashaba, U.A.
Source:
Composites 2021 v.143 pp. 106277
ISSN:
1359-835X
Subject:
fatigue strength,   etc   ; ambient temperature; glass transition temperature; hysteresis; potential energy; prediction; storage modulus;     Show all 7 Subjects
Abstract:
... Fatigue tests were conducted on scarf adhesive joints (SAJs) with composite substrates at room temperature (RT) and 50 °C. The adhesive layer was modified with Al₂O₃-nanoparticles. Dynamic parameters such as damping factor, storage modulus, dissipated energy and potential energy (Uₚ) were measured from the stress–strain hysteresis loops of the SAJs with the aim of knowing which ones are best for e ...
DOI:
10.1016/j.compositesa.2021.106277

5. Tensile, compressive, and fatigue strength of a quasi-isotropic carbon fiber reinforced plastic laminate with a punched hole

Author:
Ueda, Masahito; Cuong, Vu Manh; Yamanaka, Atsushi; Sakata, Kazuhiro
Source:
Heliyon 2020 v.6 no.12 pp. e05690
ISSN:
2405-8440
Subject:
fatigue strength,   etc   ; carbon fibers; compression strength;     Show all 3 Subjects
Abstract:
... The mechanical properties of a quasi-isotropic carbon fiber reinforced plastic (CFRP) laminate with a punched hole were investigated. During the punching process, pressure was applied to the laminate through the upper and lower blank holders of a punching machine; the clearance between the punch and blank holders was set to be small to suppress damage in the CFRP laminates. Due to the dragging of ...
DOI:
10.1016/j.heliyon.2020.e05690

6. Predictions and mechanism analyses of the fatigue strength of steel based on machine learning

Author:
Yan, Feng; Song, Kai; Liu, Ying; Chen, Shaowei; Chen, Jiayong
Source:
Journal of materials science 2020 v.55 no.31 pp. 15334-15349
ISSN:
0022-2461
Subject:
fatigue strength,   etc   ; algorithms; models; steel; wolves;     Show all 5 Subjects
Abstract:
... It is not completely understood fatigue strength at this time due to its complex formation mechanism. Therefore, in order to address this issue, machine learning has been used to examine the important factors involved in predicting fatigue strength. In this study, a hybrid model was proposed based on the modified bagging method by combining XGBoost and LightGBM, in which the hyperparameters of the ...
DOI:
10.1007/s10853-020-05091-7

7. Can taste be ergogenic?

Author:
Best, Russ; McDonald, Kerin; Hurst, Philip; Pickering, Craig
Source:
European journal of nutrition 2021 v.60 no.1 pp. 45-54
ISSN:
1436-6207
Subject:
fatigue strength,   etc   ; ; athletic performance; caffeine; carbohydrates; cold; digestive tract; energy; energy density; mouth; nutrition; oral exposure; placebos; taste; temperature; toxicity;     Show all 16 Subjects
Abstract:
... Taste is a homeostatic function that conveys valuable information, such as energy density, readiness to eat, or toxicity of foodstuffs. Taste is not limited to the oral cavity but affects multiple physiological systems. In this review, we outline the ergogenic potential of substances that impart bitter, sweet, hot and cold tastes administered prior to and during exercise performance and whether th ...
DOI:
10.1007/s00394-020-02274-5

8. Strength and failure modes of surface treated CFRP secondary bonded single-lap joints in static and fatigue tensile loading regimes

Author:
Park, Seong-Min; Roy, Rene; Kweon, Jin-Hwe; Nam, Youngwoo
Source:
Composites 2020 v.134 pp. 105897
ISSN:
1359-835X
Subject:
fatigue strength,   etc   ; carbon fibers; composite materials; energy; polymers; surface roughness;     Show all 6 Subjects
Abstract:
... Adherend surface treatment prior to bonding is pivotal for efficient assembly or repair of carbon fiber reinforced polymer (CFRP) composites. The effect of CFRP surface treatment has gathered much attention in the literature but reported test results on fatigue performance are less prevalent. The effect of surface treatment was extended in this work to cover the static and also fatigue strength of ...
DOI:
10.1016/j.compositesa.2020.105897

9. A Gd-doped HfO₂ single film for a charge trapping memory device with a large memory window under a low voltage

Author:
Shen, Yuxin; Zhang, Zhaohao; Zhang, Qingzhu; Wei, Feng; Yin, Huaxiang; Wei, Qianhui; Men, Kuo
Source:
RSC advances 2020 v.10 no.13 pp. 7812-7816
ISSN:
2046-2069
Subject:
fatigue strength,   etc   ; electric potential difference; gadolinium; silica; silicon;     Show all 5 Subjects
Abstract:
... In this study, a performance-enhanced charge trapping memory device with a Pt/Gd-doped HfO₂/SiO₂/Si structure has been investigated, where Gd-doped HfO₂ acts as a charge trapping and blocking layer. The device demonstrates a large memory window of 5.4 V under a ±5 V sweeping voltage (360% of the device with pure HfO₂), which is extremely attractive in low-power applications. In addition, the devic ...
DOI:
10.1039/d0ra00034e

10. Efficacy of Popular Diets Applied by Endurance Athletes on Sports Performance: Beneficial or Detrimental? A Narrative Review

Author:
Devrim-Lanpir, Aslı; Hill, Lee; Knechtle, Beat
Source:
Nutrients 2021 v.13 no.2
ISSN:
2072-6643
Subject:
fatigue strength,   etc   ; FODMAP diet; energy; food and nutrition programs; gastrointestinal system; gluten-free diet; nutritional support; oligosaccharides; polyols; popular diets; vegetarian diet;     Show all 11 Subjects
Abstract:
... Endurance athletes need a regular and well-detailed nutrition program in order to fill their energy stores before training/racing, to provide nutritional support that will allow them to endure the harsh conditions during training/race, and to provide effective recovery after training/racing. Since exercise-related gastrointestinal symptoms can significantly affect performance, they also need to de ...
DOI:
10.3390/nu13020491

11. Prediction and optimization of tool wear rate during electric discharge machining of Al/Cu/Ni alloy using adaptive neuro-fuzzy inference system

Author:
Phate, Mangesh; Bendale, Aditya; Toney, Shraddha; Phate, Vikas
Source:
Heliyon 2020 v.6 no.10 pp. e05308
ISSN:
2405-8440
Subject:
fatigue strength,   etc   ; alloys; aluminum; automobiles; copper; corrosion; electric discharges; fuzzy logic; prediction;     Show all 9 Subjects
Abstract:
... Aluminum (Al)-copper (Cu)-nickel (Ni) alloy is a versatile material with lightweight and excellent strength. It also possesses properties such as superior corrosion resistance, fatigue strength. These alloys are essential in sectors viz. automobile, aerospace, defense, aerospace, etc. In this research work, the authors have presented the prediction and analysis of tool wear rate (TWR). The impact ...
DOI:
10.1016/j.heliyon.2020.e05308

12. Coupled health monitoring system for CNT-doped self-sensing composites

Author:
Park, Kundo; Scaccabarozzi, Diego; Sbarufatti, Claudio; Jimenez-Suarez, Aberto; Ureña, Alejandro; Ryu, Seunghwa; Libonati, Flavia
Source:
Carbon 2020 v.166 pp. 193-204
ISSN:
0008-6223
Subject:
fatigue strength,   etc   ; carbon; electrical resistance; glass; polymers; temperature profiles; thermodynamics; thermography;     Show all 8 Subjects
Abstract:
... Owing to the high strength-to-weight and stiffness-to-weight ratios, composite materials are today essential building blocks for a wide range of industrial applications. However, their complex microstructures make it difficult to predict their failure mechanisms and residual lives under varying external loads. In situ health monitoring systems have received much attention in recent years as promis ...
DOI:
10.1016/j.carbon.2020.04.060

13. Low-angle boundary engineering for improving high-cycle fatigue property of 430 ferritic stainless steel

Author:
Kobayashi, Shigeaki; Yang, Weitao; Tomobe, Yuuki; Okada, Rei; Tsurekawa, Sadahiro
Source:
Journal of materials science 2020 v.55 no.22 pp. 9273-9285
ISSN:
0022-2461
Subject:
fatigue strength,   etc   ; X-ray diffraction; cold; crystallization; deformation; stainless steel; texture;     Show all 7 Subjects
Abstract:
... Grain boundary engineering (GBE) based on the control of a low-angle grain boundary (LAGB) network was investigated to improve the fatigue property in 430 ferritic stainless steel. The development of a subboundary structure during annealing in a specimen that was cold rolled at a high reduction ratio was evaluated quantitatively by electron backscatter diffraction measurements. The fine subgrain s ...
DOI:
10.1007/s10853-020-04555-0

14. Evaluation of strength degradation behavior and fatigue life prediction of plain-woven carbon-fiber-reinforced plastic laminates immersed in seawater

Author:
Koshima, Shuhei; Yoneda, Shunsuke; Kajii, Norihiro; Hosoi, Atsushi; Kawada, Hiroyuki
Source:
Composites 2019 v.127 pp. 105645
ISSN:
1359-835X
Subject:
fatigue strength,   etc   ; composite polymers; delamination; models; plastics; prediction; seawater;     Show all 7 Subjects
Abstract:
... The effect of long-term seawater immersion on the mechanical properties and fatigue life of plain-woven carbon-fiber-reinforced plastic (CFRP) laminates was investigated. Under tension loading, the static strength and low-cycle fatigue strength of the CRFP laminates greatly decreased owing to the rapid growth of interface debonding and delamination. However, under compression loading, the fatigue ...
DOI:
10.1016/j.compositesa.2019.105645

15. Oral taurine improves critical power and severe-intensity exercise tolerance

Author:
Waldron, Mark; Patterson, Stephen David; Jeffries, Owen
Source:
Amino acids 2019 v.51 no.10-12 pp. 1433-1441
ISSN:
0939-4451
Subject:
fatigue strength,   etc   ; cross-over studies; exercise; ingestion; males; maltodextrins; taurine;     Show all 7 Subjects
Abstract:
... This study investigated the effects of acute oral taurine ingestion on: (1) the power–time relationship using the 3-min all-out test (3MAOT); (2) time to exhaustion (TTE) 5% > critical power (CP) and (3) the estimated time to complete (Tₗᵢₘ) a range of fixed target intensities. Twelve males completed a baseline 3MAOT test on a cycle ergometer. Following this, a double-blind, randomised cross-over ...
DOI:
10.1007/s00726-019-02775-6

16. Subjective thermal strain impairs endurance performance in a temperate environment

Author:
Van Cutsem, Jeroen; Roelands, Bart; De Pauw, Kevin; Meeusen, Romain; Marcora, Samuele
Source:
Physiology & behavior 2019 v.202 pp. 36-44
ISSN:
0031-9384
Subject:
fatigue strength,   etc   ; athletes; heat; peak oxygen uptake; relative humidity; sensation;     Show all 6 Subjects
Abstract:
... The aim of this study was to test the hypothesis that subjective thermal strain can reduce endurance performance independently from the general physiological strain normally associated with impaired endurance performance in the heat.In 20 °C and 44% relative humidity, 12 endurance-trained athletes (1♀ 11♂; mean ± SD; age: 27 ± 6 y; VO2max: 61 ± 6 ml/kg/min) performed a time to exhaustion (TTE) tes ...
DOI:
10.1016/j.physbeh.2019.01.011

17. Densification, microstructure evolution and fatigue behavior of Ti-13Nb-13Zr alloy processed by selective laser melting

Author:
Zhou, Libo; Yuan, Tiechui; Li, Ruidi; Tang, Jianzhong; Wang, Guohua; Guo, Kaixuan; Yuan, Jiwei
Source:
Powder technology 2019 v.342 pp. 11-23
ISSN:
0032-5910
Subject:
fatigue strength,   etc   ; alloys; hardness; melting; microstructure; powders; tensile strength;     Show all 7 Subjects
Abstract:
... Ti-13Nb-13Zr alloy was fabricated by selective laser melting (SLM), and the densification, microstructure evolution, nanohardness, tensile strength and fatigue behavior of the alloy were systematically investigated. A narrow, feasible process window (laser power 325 W, scanning speed 1000 mm/s, scanning distance 0.13 mm, and layer thickness 0.03 mm) was accordingly determined. With the increase of ...
DOI:
10.1016/j.powtec.2018.09.073

18. Cycling performed on an innovative ergometer at different intensities–durations in men: neuromuscular fatigue and recovery kinetics

Author:
Krüger, Renata L.; Aboodarda, Saied Jalal; Jaimes, Libia Marcela; Samozino, Pierre; Millet, Guillaume Y.
Source:
Applied physiology, nutrition and metabolism 2019 v.44 no.12 pp. 1320-1328
ISSN:
1715-5320
Subject:
fatigue strength,   etc   ; etiology; exercise; males; men; muscle tissues;     Show all 6 Subjects
Abstract:
... The majority of studies have routinely measured neuromuscular (NM) fatigue with a delay (∼1–3 min) after cycling exercises. This is problematic since NM fatigue can massively recover within the first 1–2 min after exercise. This study investigated the etiology of knee extensors (KE) NM fatigue and recovery kinetics in response to cycling exercises by assessing NM function as early as 10 s followin ...
DOI:
10.1139/apnm-2018-0858

19. Effects of Different Doses of Caffeinated Coffee on Muscular Endurance, Cognitive Performance, and Cardiac Autonomic Modulation in Caffeine Naive Female Athletes

Author:
Karayigit, Raci; Naderi, Alireza; Akca, Firat; Cruz, Carlos Janssen Gomes da; Sarshin, Amir; Yasli, Burak Caglar; Ersoz, Gulfem; Kaviani, Mojtaba
Source:
Nutrients 2020 v.13 no.1
ISSN:
2072-6643
Subject:
fatigue strength,   etc   ; athletic performance; body weight; caffeine; cognition; cross-over studies; decaffeination; females; heart rate; ingestion; males; standard deviation;     Show all 12 Subjects
Abstract:
... Caffeine is widely consumed among elite athletes for its well-known ergogenic properties, and its ability to increase exercise performance. However, studies to date have predominantly focused on the anhydrous form of caffeine in male participants. The aim of the study was to investigate the effect of caffeinated coffee ingestion on lower-upper body muscular endurance, cognitive performance, and he ...
DOI:
10.3390/nu13010002

20. Efficacy of Ingesting an Oral Rehydration Solution after Exercise on Fluid Balance and Endurance Performance

Author:
Fan, Priscilla Weiping; Burns, Stephen F.; Lee, Jason Kai Wei
Source:
Nutrients 2020 v.12 no.12
ISSN:
2072-6643
Subject:
fatigue strength,   etc   ; electrolytes; exercise; oral rehydration; palatability; peak oxygen uptake; relative humidity; sodium; sweat; temperature; volume; water; wind speed;     Show all 13 Subjects
Abstract:
... This study investigated the efficacy of ingesting an oral rehydration solution (DD) that has a high electrolyte concentration after exercise on fluid balance and cycling performance in comparison with a sports drink (SD) and water (WA). Nine healthy males aged 24 ± 2 years (mean ± SD), with peak oxygen uptake (VO₂ peak) 55 ± 6 mL·kg⁻¹·min⁻¹ completed three experimental trials in a randomised manne ...
DOI:
10.3390/nu12123826