Time‐dependent fracture strength of oriented polymers
作者:
M. S. Mun,
C. C. Hsiao,
期刊:
Journal of Applied Physics
(AIP Available online 1986)
卷期:
Volume 60,
issue 8
页码: 2655-2658
ISSN:0021-8979
年代: 1986
DOI:10.1063/1.337091
出版商: AIP
数据来源: AIP
摘要:
A statistical consideration based upon a theory of microscopic molecular kinetics is developed to describe the time‐dependent fracture process for oriented polymers. The interrelation between the macroscopic fracture strength and the microscopic behaviors is formulated with the aid of a double Fourier series expansion. The microscopic behavior in the vicinity of a point is expressed in the form of a spherical function which can be expanded into a series of symmetric tensorial terms. Subsequently, the fracture strength of polymers is evaluated in terms of both time and molecular orientation. By taking account of the individual values of the directional fraction of integrity, the time to fracture and the most probable direction of fracture within any volume element in a medium are predicted.
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