with the expanding demand on application of magnesium alloys in automotive and aerospace industries, robust methods in fatigue characterization of commercially available magnesium alloys with high specific strength is anticipated. in this paper, rotating bending load controlled tests has been studied on specimens machined from an extrusion piece of az31b. due to asymmetric and anisotropic behav...

Introduction: One of the consequences of life in today's society is the high prevalence of spinal cord injury, which happens for several reasons. Decreased mobility in these people causes premature fatigue and reduces their quality of life, which leads to diseases. This study aimed to compare the effectiveness of virtual reality-based rehabilitation exercises and reflexology in reducing the fat...

OBJECTIVES The objective of this work was to develop a methodology for the prediction of fatigue life of the dentin-adhesive (d-a) interface. METHODS At the micro-scale, the d-a interface is composed of dissimilar material components. Under global loading, these components experience different local stress amplitudes. The overall fatigue life of the d-a interface is, therefore, determined by ...

This research examined the correlation among sleep, fatigue and quality of life of stroke patients. Data regarding the quality of sleep, sleep satisfaction, fatigue and quality of life was collected from 37 stroke patients using questionnaires. The data was analyzed using Pearson correlation analysis. The results suggested that the quality of sleep is associated with sleep satisfaction and fati...

Residual compressive stress can improve fretting fatigue strength. In this paper, the effects of residual stress on fretting fatigue of Al 2024-T351 alloy specimens are studied using a numerical approach. The extended finite element method combined with the cyclic cohesive zone model is adopted to model fretting fatigue crack growth behavior. It is shown that residual stress changes the frettin...

Several studies have found that fatigue is one of the most commonly reported symptoms after stroke and the most difficult to cope with. The present study aimed to investigate the presence and severity of self-reported fatigue six years after stroke onset and associated factors. The cohort "Life After Stroke Phase I" (n = 349 persons) was invited at six years to report fatigue (Fatigue Severity ...

To estimate the fatigue life of long-span steel bridge more accurately, this paper proposes a method for estimating the fatigue life of long-span bridges by considering vehicle-bridge coupled vibration. Firstly, the universal equation of vehicle-bridge vibration is derived based on triaxial standard multi-scale model of fatigue vehicle and bridge, and relevant program for vehicle-bridge coupled...

BACKGROUND To examine the role of psychological distress, negative life events, social support and lack of fitness (using breathlessness on exertion as a proxy) in the development of new onset fatigue in a primary care population. METHOD Adults between the ages of 18 and 45 years who were registered with five general practices in South East England were asked to complete a fatigue questionnai...

The creep-fatigue interaction has been studied and innovative mathematical models are proposed to predict the operating life of aircraft components, specifically gas turbine blades subject to creep-fatigue at high temperatures. The historical evolution of the creep-fatigue lifetime prediction is given in order to place the present study in the context. A literature review of the life estimation...

This paper presents an experimental study on the fatigue behaviour of shot-peened open-hole plates with Q345 steel. The beneficial effects induced by shot peening on the fatigue life improvement are highlighted. The characteristic fatigue crack initiation and propagation modes of open-hole details under fatigue loading are revealed. The surface hardening effect brought by the shot peening is an...