疲劳裂纹扩展门槛值的研究进展

IMECH-IR > 力学所知识产出(1956-2008)

	疲劳裂纹扩展门槛值的研究进展
	曾春华
Source Publication	力学进展
	1986
Volume	16 Issue:2 Pages:256-276
ISSN	1000-0992
Abstract	<正> Ⅰ.引言大量的研究和疲劳裂纹扩展的试验表明,对于存在一定尺寸裂纹及缺陷的材料或构件,只有当裂纹尖端的应力强度因子达到或超过某一值时,裂纹才会在交变应力的作用下扩展。当裂纹尖端的应力强度因子小于这一值时,裂纹在交变应力作用下不发生扩展。这个应力强度因子值,就是界限应力强度因予幅值△K_(th),在疲劳研究中称为裂纹扩展的门槛值。门槛值△K_(th)和疲劳裂纹扩展速率da/dN一样,是反映带裂纹或缺陷构件抗疲劳性能的
Keyword	裂纹扩展疲劳门槛值
Language	中文
Document Type	期刊论文
Identifier	http://dspace.imech.ac.cn/handle/311007/37082
Collection	力学所知识产出(1956-2008)
Corresponding Author	曾春华
Recommended Citation GB/T 7714	曾春华. 疲劳裂纹扩展门槛值的研究进展[J]. 力学进展,1986,16,2,:256-276.
APA	曾春华.(1986).疲劳裂纹扩展门槛值的研究进展.力学进展,16(2),256-276.
MLA	曾春华."疲劳裂纹扩展门槛值的研究进展".力学进展 16.2(1986):256-276.

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