✦ LIBER ✦

Branching extension characteristics of mode II crack under fatigue loading

✍ Scribed by Zong Rui; Wang Ming-O

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 871 KB
Volume: 49
Category: Article
ISSN: 0013-7944
DOI: 10.1016/0013-7944(94)90043-4

No coin nor oath required. For personal study only.

✦ Synopsis

Experiments show that a mode II crack branches symmetrically under fatigue loading. The characteristics of a symmetrically branched crack in a shear stress field are analysed by FEM. Mode II fatigue tests are performed on six specimens of three different materials. Serious friction is observed existing between two main crack faces under fatigue loading. The branching paths are measured and the SIFs are calculated during the branching extension process. The effects of the friction between two main crack faces on the extension drive of a branched crack and branch growth rate are also discussed. Then the fatigue branching extension characteristics of originally a mode II crack are summarized.

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