Experimental investigation on fracture of viscoelastic materials under biaxial-stress fields

1968 ◽  
Vol 8 (5) ◽  
pp. 202-209 ◽  
Author(s):  
M. G. Sharma ◽  
C. K. Lim
Keyword(s):  
Experimental Investigation ◽  
Biaxial Stress ◽  
Stress Fields ◽  
Viscoelastic Materials

Numerical Stress Analysis of the Biaxial Tension-Compression Wedge-Splitting Test in Vicinity of the Crack Tip

2018 ◽  
Vol 784 ◽  
pp. 85-90
Author(s):  
Stanislav Seitl ◽  
Petr Miarka ◽  
Ildikó Merta ◽  
Zbyněk Keršner
Keyword(s):  
Stress Analysis ◽  
Mechanical Test ◽  
Biaxial Tension ◽  
Crack Tip ◽  
Biaxial Stress ◽  
Stress Fields ◽  
Wedge Splitting Test ◽  
Splitting Test ◽  
Compression Wedge ◽  
Wedge Splitting

Wedge-splitting test is widely used fracture mechanical test for its stability in measurement during the testing and many papers were published. However, the biaxial wedge-splitting test is relatively a new method and the numerical stress analysis of such test is necessary. Especially the investigation of the stress fields in the vicinity of the crack tip. In this contribution, influence of various biaxial stress level is discussed on values of first and second terms of William’s expansion.

Experimental Investigation of Water Soaked Wood at Uniaxial and Biaxial States of Stress

1995 ◽  
Vol 48 (10) ◽  
pp. 684-688 ◽  
Author(s):  
M. Kowal ◽  
S. J. Kowalski
Keyword(s):  
Experimental Investigation ◽  
Stress State ◽  
Moisture Content ◽  
Radial Direction ◽  
Tangential Direction ◽  
Biaxial Stress ◽  
Growth Rings ◽  
Significant Difference ◽  
Free Swelling

It is possible to observe a significant difference in swelling strains of unstressed and stressed water soaked wood. This paper points out that the swelling strains depend not only on the magnitude of stress in wood but also on the kind of stress state. Our main aim is to investigate the relation between various states of stress and the swelling strains in water soaked wood. Three different states of stress are studied: tension in the radial direction, compression in the tangential direction with respect to the growth rings, and both these stresses acting together (biaxial stress). Some weighty conclusions follow from the investigations. The main one is that, although the mechanical strains alone are negligibly small compared to the free swelling strains, the coupled mechanical-swelling strains, being a function of the stress state and the moisture content, have a great significance in total strains of water soaked wood.

scholarly journals Experimental Investigation of Fatigue Crack Propagation in Residual Stress Fields

2015 ◽  
Vol 133 ◽  
pp. 244-254 ◽  
Author(s):  
Jonas Hensel ◽  
Thomas Nitschke-Pagel ◽  
Joana Rebelo-Kornmeier ◽  
Klaus Dilger
Keyword(s):  
Residual Stress ◽  
Experimental Investigation ◽  
Fatigue Crack ◽  
Crack Propagation ◽  
Fatigue Crack Propagation ◽  
Stress Fields
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