Seismic dislocation theory in pre-stressed media

1975 ◽  
Vol 28 (1) ◽  
pp. 257-273 ◽  
Author(s):  
E. Boschi ◽  
E. Di Curzio
Keyword(s):  
Dislocation Theory ◽  
Seismic Dislocation

Seismic-dislocation theory for pre-stressed thermoelastic media

1977 ◽  
Vol 40 (2) ◽  
pp. 249-260
Author(s):  
M. Bonafede ◽  
E. Di Curzio ◽  
E. Boschi
Keyword(s):  
Dislocation Theory ◽  
Seismic Dislocation

Dislocation theory of the elastic twinning of crystals

1971 ◽  
Vol 104 (6) ◽  
pp. 201 ◽  
Author(s):  
A.M. Kosevich ◽  
V.S. Boiko
Keyword(s):  
Dislocation Theory

Elements of the dislocation theory and its significance in metal science

1971 ◽  
Vol 13 (4) ◽  
pp. 334-345
Author(s):  
M. M. Shteinberg ◽  
D. A. Mirzaev
Keyword(s):  
Dislocation Theory ◽  
Metal Science

Reserch of Dislocation Theory in Micro Cutting

2012 ◽  
Vol 482-484 ◽  
pp. 2033-2036
Author(s):  
Hong Jun Ding ◽  
Xi Bin Wang ◽  
Zhi Qiang Liang ◽  
Qiang Jia
Keyword(s):  
Fracture Strength ◽  
Paper Analysis ◽  
Fracture Dislocation ◽  
Dislocation Theory ◽  
Line Defect ◽  
Dislocation Mechanism ◽  
Micro Cutting ◽  
Metal Fracture ◽  
Depth Analysis

This paper analysis Griffith 's Theory and the metal theoretical fracture strength, thus introducing a line defect that existence in actual crystal — dislocation; And in-depth analysis the metal fracture dislocation mechanism in the micro cutting, and the formation and expand of the Fracture cracks , provides the theory basis for micro cutting

Seismic Waves in a Laterally Inhomogeneous Layered Medium, Part I: Theory

1997 ◽  
Vol 64 (1) ◽  
pp. 50-58 ◽  
Author(s):  
Ruichong Zhang ◽  
Liyang Zhang ◽  
Masanobu Shinozuka
Keyword(s):  
Wave Field ◽  
Half Space ◽  
Seismic Waves ◽  
Scattered Wave ◽  
Inhomogeneous Layer ◽  
Dislocation Source ◽  
Seismic Dislocation ◽  
Body Forces ◽  
The Mean ◽  
Layered Half Space

Seismic waves in a layered half-space with lateral inhomogeneities, generated by a buried seismic dislocation source, are investigated in these two consecutive papers. In the first paper, the problem is formulated and a corresponding approach to solve the problem is provided. Specifically, the elastic parameters in the laterally inhomogeneous layer, such as P and S wave speeds and density, are separated by the mean and the deviation parts. The mean part is constant while the deviation part, which is much smaller compared to the mean part, is a function of lateral coordinates. Using the first-order perturbation approach, it is shown that the total wave field may be obtained as a superposition of the mean wave field and the scattered wave field. The mean wave field is obtainable as a response solution for a perfectly layered half-space (without lateral inhomogeneities) subjected to a buried seismic dislocation source. The scattered wave field is obtained as a response solution for the same layered half-space as used in the mean wave field, but is subjected to the equivalent fictitious distributed body forces that mathematically replace the lateral inhomogeneities. These fictitious body forces have the same effects as the existence of lateral inhomogeneities and can be evaluated as a function of the inhomogeneity parameters and the mean wave fleld. The explicit expressions for the responses in both the mean and the scattered wave fields are derived with the aid of the integral transform approach and wave propagation analysis.

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