The Mechanism Investigation on Propagation and Coalescence Pattern of Three Internal Plane Flaws in Brittle Materials

2006 ◽  
pp. 739-742
Author(s):  
Yan Shuang Guo ◽  
Wei Shen Zhu ◽  
R.H.C. Wong ◽  
Shu Cai Li ◽  
Chun Jin Lin
Keyword(s):  
Brittle Materials ◽  
Coalescence Pattern ◽  
Internal Plane

The Mechanism Investigation on Propagation and Coalescence Pattern of Three Internal Plane Flaws in Brittle Materials

2006 ◽  
Vol 324-325 ◽  
pp. 739-742 ◽  
Author(s):  
Yan Shuang Guo ◽  
Wei Shen Zhu ◽  
R.H.C. Wong ◽  
Shu Cai Li ◽  
Chun Jin Lin
Keyword(s):  
Local Buckling ◽  
Brittle Materials ◽  
Compressive Load ◽  
Fracture Plane ◽  
Interesting Phenomenon ◽  
Aluminum Films ◽  
3 Dimensional ◽  
Brittle Fractures ◽  
The One ◽  
Coalescence Pattern

Under the action of compressive load, the growth and coalescence containing flaws in brittle materials (rock and rocklike materials e.g.) will result in the local buckling and global fracture of rockmass. But, the mechanisms on propagation and coalescence of 3-dimensional internal flaws are not clear till now. We examine brittle fractures of manmade specimens using frozen casting resin and rocklike material to observe 3D internal flaws growth process at about -30° C. A team of specimens containing three internal flaws is measured; flaws are made of three parallel oblong aluminum films. The propagation and coalescence pattern of three internal flaws is observed under compressive stress. An interesting phenomenon is that the crack initiated from the second flaw quickly turns to the one induced from the third flaw and forms a bigger fracture plane, then splits the specimen. It shows that the flaw distribution pattern will greatly affect the flaws growth and coalescence process. The mechanisms that lead to the wing and anti-wing crack initiation and coalescence are described.

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.

Failure wave as resonance excitation of collective burst modes of defects in shocked brittle materials

2000 ◽  
Vol 10 (PR9) ◽  
pp. Pr9-811-Pr9-816 ◽  
Author(s):  
O. A. Plekhov ◽  
D. N. Eremeev ◽  
O. B. Naimark
Keyword(s):  
Brittle Materials ◽  
Resonance Excitation ◽  
Failure Wave

Structural Reliability of Brittle Materials at High Temperatures.

1984 ◽  
Author(s):  
S. M. Wiederhorn ◽  
N. J. Tighe ◽  
T. J. Chuang ◽  
K. A. Hardman-Rhyne ◽  
B. J. Hockey
Keyword(s):  
High Temperatures ◽  
Structural Reliability ◽  
Brittle Materials

Failure Fronts in Brittle Materials and Their Morphological Instabilities

2005 ◽  
Author(s):  
Michael A. Grinfeld ◽  
Scott E. Schoenfeld ◽  
Tim W. Wright
Keyword(s):  
Brittle Materials ◽  
Morphological Instabilities

Brittle Materials Design, High Temperature Gas Turbine

1975 ◽  
Author(s):  
Arthur F. McLean ◽  
Eugene A. Fisher ◽  
Raymond J. Bratton ◽  
Donald G. Miller
Keyword(s):  
High Temperature ◽  
Gas Turbine ◽  
Brittle Materials ◽  
Materials Design ◽  
High Temperature Gas
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