Results 71 to 80 of about 796,368 (357)

Cumulative Damage in Very High/Low Cycle Combined Fatigue for TC21 Titanium Alloy

Crystals, 2022
The effect of low cycle fatigue (LCF) predamage with no precracks on very high cycle fatigue (VHCF) properties, and crack initiation characteristics for TC21 titanium alloy, was investigated.
Baohua Nie, Shuai Liu, Yue Wu, Yu Song, Haiying Qi, Binqing Shi, Zihua Zhao, Dongchu Chen   +7 more
doaj   +1 more source

A comparative study of low cycle fatigue behavior and microstructure of Cr-based steel at room and high temperatures

, 2020
The effect of temperature on tensile behavior, low cycle fatigue, and microstructure evolution considering the damage mechanisms of Cr-based heat-resisting steel was investigated.
Quanyi Wang, Qingyu Wang, X. Gong, Tianjian Wang, Wei Zhang, Lang Li, Yongjie Liu, Chao He, Chong Wang, Hong Zhang   +9 more
semanticscholar   +1 more source

Multiaxial Low Cycle Fatigue Life Prediction under N onproportional Loading [PDF]

, 2001
This paper studies the effect of nonproportional straining on tension-torsion low cycle fatigue lives of two types of materials. Extensive low cycle fatigue tests under 14 proportional and non-proportional strain paths were carried out using Type 304 ...
ITOH, Takamoto
core  

New Onset of Fibromyalgia After Exposure to a Combat Environment: A Longitudinal Cohort Study

Arthritis Care &Research, EarlyView.
Objective Traumatic life events are hypothesized to be triggers for the onset of fibromyalgia. Posttraumatic stress disorder (PTSD) is a common comorbidity of fibromyalgia. However, limited prospective data are available on the development of fibromyalgia after exposure to high‐magnitude stress.
Jay B. Higgs, Willie J. Hale, Casey L. Straud, Jim Mintz, Stacey Young‐McCaughan, Kimberly D. Gomes, Chelsea J. Sterne, Katrina M. Lawrence‐Wolff, Alan J. Bartholomew, Kevin M. Kelly, Douglas M. Maurer, Catherine Vriend, Brett T. Litz, Douglas E. Williamson, Alan L. Peterson, for the STRONG STAR Consortium   +15 more
wiley   +1 more source

Study on high-low cycle fretting fatigue life of Inconel718 tenon structure

Hangkong gongcheng jinzhan
The turbine blades of aero-engines are subjected to cyclic high-low cycle loads in actual service environments，which is a typical high-low cycle micro motion fatigue condition. The frequent occurrence of fatigue fracture in turbine blades due to fretting
YANG Xiaolin, MU Qinqin, CHEN Yonghui, YAN Qun   +3 more
doaj   +1 more source

Micro-Deformation and Fracture Features of Ti834 Titanium Alloy under Fatigue Loading

Metals, 2023
A sustained load holding period imposed during fatigue loading is detrimental to material performances, causing a sharp decline in the fatigue life of near-α titanium alloys.
Ning Wang, Weiju Jia, Xiaonan Mao, Wei Zhou, Chengliang Mao   +4 more
doaj   +1 more source

Low and ultra-low-cycle fatigue behavior of X52 piping steel based on theory of critical distances

International Journal of Fatigue, 2020
The cyclic failure observed in structural components such as pipelines subjected to extreme loading conditions highlights some limitations concerning the application of existing fatigue damage models. The evaluation and prediction of this type of failure
J. Pereira, A. Jesus, J. Xavier, J. Correia, L. Susmel, A. Fernandes   +5 more
semanticscholar   +1 more source

The effect of quenching and defects size on the HCF behaviour of Boron steel [PDF]

, 2014
This work investigates the effect of natural and artificial surface defects and quenching on the fatigue strength of a Boron steel (22MnB5). A vast experimental campaign has been undertaken to study the high cycle fatigue behaviour and more specifically ...
PESSARD, Etienne, ABROUG, Foued, MOREL, Franck, DELHAYE, Philippe, ABRIVARD, Benjamin   +4 more
core   +1 more source

Evaluating a Pragmatic Strength Alternative for Frailty Measurement and Assessing Its Predictive Capacity Against Established Frailty Instruments in Rheumatoid Arthritis

Arthritis Care &Research, EarlyView.
Objective Frailty occurs prematurely in rheumatoid arthritis (RA) and is associated with poor health outcomes. We compared the performance of four frailty instruments, including a pragmatic alternative measure using chair sit‐to‐stand (STS), and evaluated their abilities to predict poor health outcomes.
Kylie E. Riggles, Hannah F. Brubeck, Adrienne D. Tanus, Courtney N. Loecker, Punyasha Roul, Bryant R. England, Elizabeth R. Wahl, James S. Andrews, Namrata Singh, Joshua F. Baker, Patricia P. Katz, Dolores M. Shoback, Jose M. Garcia, Ariela R. Orkaby, Katherine D. Wysham   +14 more
wiley   +1 more source

Modified low-cycle fatigue (LCF) test

Metalurgija, 2015
The fatigue test results obtained by the common low-cycle fatigue test (LCF) and its modified MLCF counterpart were presented. A satisfactory agreement of results was achieved for the two selected materials. With the MLCF method it is possible to examine
M. Maj, A. Klasik, K. Pietrzak, D. Rudnik   +3 more
doaj