Results 21 to 30 of about 3,853,790 (297)

Stress relaxation in tunable gels

Soft Matter, 2021
Molecular dynamics shows how stress relaxation of tetra-PEG hydrogels with hybrid (permanent + reversible) crosslinks is set by the strength and concentration of the reversible bonds, which provides a way to improve the responsivity of these gels.
Chiara Raffaelli, Wouter G. Ellenbroek
openaire   +4 more sources

Characteristics of stress relaxation kinetics of La60Ni15Al25 bulk metallic glass [PDF]

, 2015
The 0 relaxation typically plays an important role in the plastic deformation of glassy materials. Compared with amorphous polymers, most of the metallic glasses do not show evident beta-relaxation based on mechanical spectroscopy.
王云江, Pelletier JM, Fine ME, Yao Y, Keer LM, Qiao JC, Pelletier, JM (reprint author), Univ Lyon, MATEIS, UMR CNRS5510, INSA Lyon, Bat B Pascal, F-69621 Villeurbanne, France., Fine, M.E., Keer, L.M., Qiao, J.C., Pelletier, Jean-Marc, Yao, Y., Wang, Y.-J.   +12 more
core   +1 more source

Acute relaxation during pregnancy leads to a reduction in maternal electrodermal activity and self-reported stress levels

BMC Pregnancy and Childbirth, 2021
Background Prenatal maternal stress can have adverse effects on birth outcomes and fetal development. Relaxation techniques have been examined as potential countermeasures.
Ilena Bauer, Julia Hartkopf, Anna-Karin Wikström, Nora K. Schaal, Hubert Preissl, Birgit Derntl, Franziska Schleger   +6 more
doaj   +1 more source

热采井口装置螺栓的蠕变及应力松弛规律研究

Jixie qiangdu, 2021
The stress relaxation phenomenon of bolt used in thermal recovery wellhead is studied experimentally under field conditions.The normal and high temperature tensile test,creep test and stress relaxation test are carried out respectively.The comparison of ...
王亭沂, 曹旭祥, 李风, 孙爽
doaj  

Fractional Stress Relaxation Model of Rock Freeze-Thaw Damage

Advances in Materials Science and Engineering, 2021
Freeze-thaw cycle is a type of fatigue loading, and rock stress relaxation under freeze-thaw cycles takes into account the influence of the freeze-thaw cycle damage and deterioration.
Q. Liu, W. Chen, J. K. Guo, R. F. Li, D. Ke, Y. Wu, W. Tian, X. Z. Li   +7 more
doaj   +1 more source

Effect of Chemical Treatment on the Stress Relaxation of Wood

Chemical Engineering Transactions, 2017
In order to analyze the mechanical relaxation phenomenon of copper plated poplar veneer multilayer composite, the multilayer composite materials with different structures are taken as the experimental object, the effect of temperature, structure and ...
Liangsong Cheng, Mingbin Liu
doaj   +1 more source

Experimental mechanics and numerical prediction on stress relaxation and unrecoverable damage characteristics of rubber materials

Polymer Testing, 2021
Stress relaxation and unrecoverable damage deformation are common phenomenon in rubber materials, which greatly induces instability of geometrical dimension and deteriorates the mechanical performances.
D.X. Leng, C. Huang, K. Xu, Y. Ma, G.J. Liu, Z.X. Li   +5 more
doaj   +1 more source

Design of a high-strength and high-temperature stress relaxation resistant copper alloy based on machine learning

Materials & Design
Stress relaxation is a key factor contributing to connector failure in high-strength, high-elasticity copper alloys. However, the stress relaxation behavior is influenced by numerous complex factors, making it challenging to study effectively.
Yuxuan Sun, Jun Liu, Lijun Peng, Wei Luo, Zhen Yang, Yunqing Zhu, Haofeng Xie   +6 more
doaj   +1 more source

Stress Relaxation Properties and Microscopic Deformation Structure in Bending of the C7025 and C7035 Alloy

Crystals, 2018
Stress relaxation tests in cantilever bending were performed on the C7025 and C7035 alloys at 298 K and 393 K, respectively. The effect of stress-relief treatments on stress relaxation properties was investigated.
Xiangpeng Xiao, Hai Xu, Jian Huang, Junfeng Wang, Jianbo Zhang   +4 more
doaj   +1 more source

Transverse relaxation characteristic and stress relaxation model considering molecular chains of HTPB coating based on pre-strained thermal aging

Defence Technology, 2021
In order to accurately describe the transverse relaxation characteristic and stress relaxation modulus of HTPB coating during pre-strain thermal aging process, a one month thermal aging test was carried out at 70 °C with pre-strain of 0%, 3%, 6% and 9 ...
Yong-qiang Du, Jian Zheng, Gui-bo Yu, Jian-zhuang Zhi   +3 more
doaj   +1 more source