ISSN:
1460-2695
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract— The effects of the changes of crack shapes on the behaviour of small cracks were investigated on single edge crack specimens and small surface crack specimens with different initial crack shapes. Experimental results obtained from beach mark measurements on the fracture surfaces indicated that the behaviour of small cracks was strongly dependent on the crack shape itself. While the initial shape of a small crack was unstable with respect to the state of specimen-geometry-stress system, the crack gradually adjusted its shape to a specific preferred shape by means of non-uniform growth. In addition, the deceleration and subsequent acceleration of crack growth corresponds to the transition from unstable to stable crack growth.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1460-2695.1990.tb00596.x
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