scholarly journals Analysis of Cantilever-Beam Bending Stress Relaxation Properties of Thin Wood Composites

BioResources ◽  
2015 ◽  
Vol 10 (2) ◽  
Author(s):  
John F. Hunt ◽  
Houjiang Zhang ◽  
Yan Huang
Keyword(s):  
Stress Relaxation ◽  
Cantilever Beam ◽  
Bending Stress ◽  
Wood Composites ◽  
Relaxation Properties ◽  
Beam Bending

Measurement of Dynamic and Static Modulus for Thin Particleboard

2011 ◽  
Vol 217-218 ◽  
pp. 402-406
Author(s):  
Hai Cheng Yan ◽  
Hou Jiang Zhang ◽  
Lei Zhu ◽  
Yan Liang Sun
Keyword(s):  
Cantilever Beam ◽  
Modulus Of Elasticity ◽  
Traditional Method ◽  
Bending Test ◽  
Small Samples ◽  
Wood Composites ◽  
Static Modulus ◽  
Bending Modulus ◽  
Beam Bending ◽  
Linear Correlations

This document explains and demonstrates a new means of dynamic and static bending evaluation of modulus of elasticity for small samples of thin wood composites. This means is based on the principle of cantilever-beam bending and free vibration, and a cantilever beam testing apparatus has been developed according to this principle. Three kinds of thin particleboard obtained from market were processed and tested. The testing results show that there are significant linear correlations between the cantilever dynamic modulus and the static bending modulus. Through this method, it is feasible to measure the modulus of elasticity for thin wood composites, and compared with traditional method, the static bending test; it can save more time and reduce damage.

scholarly journals Long-term stress relaxation properties of SUS 316 stainless steel.

1987 ◽  
Vol 36 (401) ◽  
pp. 117-122 ◽  
Author(s):  
Toshio OHBA ◽  
Koichi YAGI ◽  
Chiaki TANAKA ◽  
Kiyoshi KUBO
Keyword(s):  
Stainless Steel ◽  
Stress Relaxation ◽  
Relaxation Properties ◽  
316 Stainless Steel

Relaxation Processes in the Deformation of Unloaded Rubbers and the Influence of the Degree of Vulcanization

1951 ◽  
Vol 24 (4) ◽  
pp. 810-819
Author(s):  
B. A. Dogadkin ◽  
M. M. Reznikovskii˘
Keyword(s):  
Stress Relaxation ◽  
Natural Rubber ◽  
Elastic Deformation ◽  
Relaxation Processes ◽  
Spatial Network ◽  
Relaxation Properties ◽  
Constant Rate ◽  
Different Temperatures ◽  
Kinetics Of

Abstract 1. It is shown that the process of stress relaxation at different initial elongations as well as the process of deformation at constant rate for unloaded rubbers at different temperatures (20–70° C) can be represented quantitatively by equations suggested in earlier works. Likewise the possibility of expanding the theories proposed for the kinetics of high-elastic deformation of spatial polymers is substantiated. 2. It is shown that the relaxation properties of soft unloaded vulcanizates of natural rubber and many synthetic rubbers do not undergo essential changes during vulcanization. 3. The conjecture is expressed that the invariability of the relaxation properties during vulcanization continues until the bonds of the spatial network are distributed sufficiently widely not to influence the activity or heat movement of the chain segments between them.

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