PERTURBATION-BASED SURROGATE MODELS FOR DYNAMIC FAILURE OF BRITTLE MATERIALS IN A MULTISCALE AND PROBABILISTIC CONTEXT

2016 ◽  
Vol 14 (3) ◽  
pp. 273-290 ◽  
Author(s):  
Junwei Liu ◽  
Lori Graham-Brady
Keyword(s):  
Brittle Materials ◽  
Surrogate Models ◽  
Dynamic Failure ◽  
Probabilistic Context

Micromechanics of Dynamic Failure in Brittle Materials

1990 ◽  
Vol 43 (5S) ◽  
pp. S256-S257
Author(s):  
G. Ravichandran
Keyword(s):  
Brittle Materials ◽  
Dynamic Failure

Micromechanical Model and Associated Validation for Dynamic Failure of Brittle Materials Containing Pores and Slit-Like Flaws

2015 ◽  
Vol 141 (10) ◽  
pp. 04015040 ◽  
Author(s):  
Lori L. Graham-Brady ◽  
Cynthia Zingale Katcoff ◽  
Nathan P. Mayercsik ◽  
Kimberly E. Kurtis
Keyword(s):  
Micromechanical Model ◽  
Brittle Materials ◽  
Dynamic Failure

Predicting variability in the dynamic failure strength of brittle materials considering pre-existing flaws

2011 ◽  
Vol 59 (2) ◽  
pp. 297-319 ◽  
Author(s):  
Nitin P. Daphalapurkar ◽  
K.T. Ramesh ◽  
Lori Graham-Brady ◽  
Jean-Francois Molinari
Keyword(s):  
Brittle Materials ◽  
Failure Strength ◽  
Dynamic Failure

Experimental Research on Dynamic Failure of Brittle Materials

2009 ◽  
Vol 417-418 ◽  
pp. 445-448
Author(s):  
Jing Xi Chen ◽  
Guang Zhang ◽  
Hai Li Tan ◽  
Zhen Dong Du
Keyword(s):  
Detonation Wave ◽  
Brittle Materials ◽  
Wave Crest ◽  
Dynamic Failure ◽  
Wave Type ◽  
Large Wave ◽  
Complex Issue ◽  
Gas Pumping ◽  
Plaster Model ◽  
Apparent Influence

Dynamic failure of brittle materials is a rather complex issue. In this paper, experimental work was carried out for plaster model, to study the crack development features of brittle materials under the action of explosion. It shows that couple medium has great influences on detonation wave type. The water has the cushioning effect on detonation wave, which makes the wave crest truncated and results in low wave amplitude and large wave width. Detonation wave type has apparent influence on failure features of brittle materials, of which larger wave width would keep the wall of exploded hole intact and increase the development length of cracks. The research results would be applied to coal mining to increase the efficiency of gas pumping drainage.

Application of TEM to Deformation, Wear, and Fracture of Ceramics

1974 ◽  
Vol 32 ◽  
pp. 472-473
Author(s):  
B. J. Hockey
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Mechanical Behavior ◽  
Brittle Materials ◽  
High Temperature Strength ◽  
Wide Range ◽  
Corrosive Environments ◽  
Further Development

Ceramics, such as Al2O3 and SiC have numerous current and potential uses in applications where high temperature strength, hardness, and wear resistance are required often in corrosive environments. These materials are, however, highly anisotropic and brittle, so that their mechanical behavior is often unpredictable. The further development of these materials will require a better understanding of the basic mechanisms controlling deformation, wear, and fracture.The purpose of this talk is to describe applications of TEM to the study of the deformation, wear, and fracture of Al2O3. Similar studies are currently being conducted on SiC and the techniques involved should be applicable to a wide range of hard, brittle materials.

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