نتایج جستجو برای: stress strain

تعداد نتایج: 632543  

This research was conducted in order to evaluate fatigue behavior of asphalt mixes containing Electric Arc Furnace (EAF) steel slag. After initial evaluation of the properties of EAF steel slag using X-ray Diffraction (XRD) and Scanning Electric Microscope (SEM), six sets of laboratory mixtures were prepared. Each set were treated replacing various portions of limestone aggregates of the mix wi...

2013
Aezeden Mohamed

Cyclic stress strain curves (CSSC) response of Al-2024 Annealed condition was conducted under symmetric tension-compression at room temperature and constant frequency, using a servo-hydraulic testing machine, to study the effect of cooling rate on cyclic stress strain curves (CSSC) response. The fatigue response of Al-2024 alloy was evaluated macroscopically in terms of cyclic stress strain res...

Journal: :Proceedings of the Institution of Civil Engineers - Structures and Buildings 2012

Journal: :Medical engineering & physics 1999
D P Pioletti L R Rakotomanana P F Leyvraz

Traction tests were performed on the bovine anterior cruciate ligament-bone complex at seven strain rates (0.1, 1, 5, 10, 20, 30, 40%/s). Corresponding stress-strain curves showed that, for a given strain level, the stress increased with the augmentation of the strain rate. This phenomenon was important since the stress increased by a factor of three between the tests performed at the lowest an...

Journal: :international journal of civil engineering 0
seyed amirodin sadrnejad k.n.toosi university of tech hamid karimpour the catholic university of american

the present paper is devoted to a new critical state based plasticity model able to predict drained and undrained behaviour of granular material. it incorporates a bounding surface plasticity model describing in multilaminate framework to capitalize on advantages of this mathematical framework. most of the models developed using stress/strain invariants are not capable of identifying the parame...

Journal: :International journal of cosmetic science 2013
J Lee H J Kwon

Many studies have presented stress-strain relationship of human hair, but most of them have been based on an engineering stress-strain curve, which is not a true representation of stress-strain behaviour. In this study, a more accurate 'true' stress-strain curve of human hair was determined by applying optical techniques to the images of the hair deformed under tension. This was achieved by app...

Journal: :iranian journal of mechanical engineering transactions of the isme 0
mojtaba ayatollahi faculty of engineering, university of zanjan, p. o. box 45195-313, zanjan, iran mahsa nourazar faculty of engineering, university of zanjan, p. o. box 45195-313, zanjan, iran

in this paper, the solution of a moving volterra-type screw dislocation in an orthotropic layer, bonded between two piezoelectric layers is obtained using complex fourier transform. the dislocation solution is then employed as strain nuclei to derive singular integral equations for a medium weakened by multiple moving cracks. these equations, which are classified as, cauchy singular equations, ...

Journal: :international journal of nano dimension 0
s. ravichandran department of physics, sathyabama university, jeppiaar nagar, chennai-600 119, tamilnadu, india.

zinc oxide nanoparticles have been synthesized by chemical reaction method.  polyvinyl alcohol (pva) composite film filled with nanometric, monodispersed zinc oxide nano particles prepared by pva solution and nanozinc oxide. polymer blend with zno nanoparticle composite film has prepared by casting technique.  the property of nano composites depends greatly on the chemistry of polymer matrices....

Journal: :international journal of occupational and environment medicine 0
w agbenyikey department of environmental and occupational health, drexel university, philadelphia, pa, usa r karasek department of work environment, university of massachusetts, lowell, ma, usa m cifuentes department of work environment, university of massachusetts, lowell, ma, usa pa wolf department of neurology, boston university school of medicine, boston, ma, usa, and the framingham heart study, framingham, ma, usa s seshadri department of neurology, boston university school of medicine, boston, ma, usa, and the framingham heart study, framingham, ma, usa ja taylor department of environmental and occupational health, drexel university, philadelphia, pa, usa

background: workplace stress is known to be related with many behavioral and disease outcomes. however, little is known about its prospective relationship with measures of cognitive decline. objective: to investigate the association of job strain, psychological demands and job control on cognitive decline. methods: participants from framingham offspring cohort (n=1429), were assessed on job str...

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