Asymptotic Stress Field in a Degenerate Orthotropic Material Containing a Cohesive Zone ahead of a Crack Tip

2007 ◽  
Vol 90 (3) ◽  
pp. 271-282 ◽  
Author(s):  
Wei Zhang ◽  
Xiaomin Deng
Keyword(s):  
Stress Field ◽  
Cohesive Zone ◽  
Orthotropic Material ◽  
Crack Tip

The Analysis of the Stress Field and Crack of Rock under the Blast Loading

2010 ◽  
Vol 168-170 ◽  
pp. 1252-1255
Author(s):  
Zhong Guo Zhang ◽  
Ya Dong Bian ◽  
Bin Gao
Keyword(s):  
Stress Field ◽  
Crack Initiation ◽  
Crack Extension ◽  
Crack Tip ◽  
Blast Loading ◽  
Crack Arrest ◽  
The Stability ◽  
Crack Tip Stress

The crack tip stress field of rock is analyzed under blast loading, and the crack arrest criterion, the conditions of rock crack initiation and crack extension are presented in this paper. The study will help the design of maintaining the stability of stope drift active workings.

Prediction of the Initial Crack Tip Microstructure in a Single Crystal of CuAlNi

1999 ◽  
Author(s):  
Galyna M. Vasko ◽  
Perry H. Leo ◽  
Thomas W. Shield
Keyword(s):  
Stress Field ◽  
Single Crystal ◽  
Crack Opening ◽  
Crack Tip ◽  
Initial Crack ◽  
Single Edge ◽  
Opening Displacement ◽  
Elastic Crack ◽  
Maximum Work ◽  
Anisotropic Elastic

Abstract The austenite to martensite pseudoelastic transformation induced by the anisotropic elastic crack tip stress field in a single crystal of shape memory alloy is considered. It is proposed that the orientation of the initial austenite-martensite interface that forms can be predicted based on knowledge of the stress field, the crystallography of the transformation and one of two selection criteria. These criteria are based on the work of formation of the martensite in stress field and the crack opening displacement the martensite causes at the crack. Predictions of the criteria are compared to experiments on three single edge notched CuAlNi single crystal specimens. Results indicate that the maximum work criterion accurately predicts the orientation of the austenite-martensite interfaces that initially form near a crack.

Direct Observation of Crack Tip Stress Field Using the Mechanoluminescence of SrAl2O4:(Eu,Dy,Nd)

2004 ◽  
Vol 85 (3) ◽  
pp. 712-714 ◽  
Author(s):  
Kee-Sun Sohn ◽  
Soo Yeon Seo ◽  
Yong Nam Kwon ◽  
Hee Dong Park
Keyword(s):  
Stress Field ◽  
Direct Observation ◽  
Crack Tip ◽  
Crack Tip Stress

On the stress field ahead of a stationary crack tip during the transition from primary to secondary creep

2020 ◽  
Vol 193-194 ◽  
pp. 455-473
Author(s):  
John W. Sanders ◽  
Mohsen Dadfarnia ◽  
Huseyin Sehitoglu ◽  
James Stubbins ◽  
Petros Sofronis
Keyword(s):  
Stress Field ◽  
Crack Tip ◽  
Secondary Creep ◽  
Stationary Crack
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