نتایج جستجو برای: compressive strain

تعداد نتایج: 239017  

1999
M.-A Nicolet

Effects of ion implantation of 320 keV “Si at room temperature in pseudomorphic metastable Ge$i,-, (x-0.04, 0.09, 0.13) layers 170 nm thick grown on Si( 100) wafers were characterized by x-ray double-crystal diffractometry and MeV 4He channeling spectrometry. The damage induced by implantation produces additional compressive strain in the Ge$i, _ x layers, superimposed on the intrinsic compress...

Journal: :Physical review letters 2006
Haiyi Liang Moneesh Upmanyu

Using classical molecular dynamics and empirical potentials, we show that the axial deformation of single-walled carbon nanotubes is coupled to their torsion. The axial-strain-induced torsion is limited to chiral nanotubes-graphite sheets rolled around an axis that breaks its symmetry. Small strain behavior is consistent with chirality and curvature-induced elastic anisotropy (CCIEA)-carbon nan...

Journal: :Osteoarthritis and cartilage 2008
T Gupta B Zielinska J McHenry M Kadmiel T L Haut Donahue

OBJECTIVE Partial meniscectomy is known to cause osteoarthritis (OA) of the underlying cartilage as well as alter the load on the remaining meniscus. Removal of 30-60% of the medial meniscus increases compressive strains from a maximum of approximately 10% to almost 20%. The goal of this study is to determine if meniscal cells produce catabolic molecules in response to the altered loading that ...

2017
Minho Yoon Gyuyong Kim Youngsun Kim Taegyu Lee Gyeongcheol Choe Euichul Hwang Jeongsoo Nam

Strain is generated in concrete subjected to elevated temperatures owing to the influence of factors such as thermal expansion and design load. Such strains resulting from elevated temperatures and load can significantly influence the stability of a structure during and after a fire. In addition, the lower the water-to-binder (W-B) ratio and the smaller the quantity of aggregates in high-streng...

Journal: :Materials science & engineering. C, Materials for biological applications 2013
Anjali Singhal Alix C Deymier-Black Jonathan D Almer David C Dunand

Synchrotron X-ray diffraction is used to study in situ the evolution of phase strains during compressive creep deformation in bovine bone and dentin for a range of compressive stresses and irradiation rates, at ambient and body temperatures. In all cases, compressive strains in the collagen phase increase with increasing creep time (and concomitant irradiation), reflecting macroscopic deformati...

2013
Jianhu Shen Yi Min Xie Xiaodong Huang Wei Zhou Dong Ruan

The strain rate effect of luffa sponge material is an indispensable property for it to be used for acoustic, vibration, and impact energy absorption. Compressive tests at different strain rates on cylindrical column specimens of luffa sponge material were conducted over a wide density ranging from 24 to 64 kg/m. A photographic technique was applied to measure the section area of the specimen wi...

Journal: :Journal of Applied Crystallography 2020

Journal: :Biomechanics and modeling in mechanobiology 2007
N O Chahine G A Ateshian C T Hung

Recent studies have reported that certain regimes of compressive loading of articular cartilage result in increased cell death in the superficial tangential zone (STZ). The objectives of this study were (1) to test the prevalent hypothesis that preferential cell death in the STZ results from excessive compressive strain in that zone, relative to the middle and deep zones, by determining whether...

Journal: :Journal of Physics: Conference Series 2011

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