Mixed mode stress intensity distributions for part circular surface flaws

✍ Scribed by C.W Smith; W.H Peters; A.T Andonian

• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 1024 KB
• Volume: 13
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(80)90091-0

✦ Synopsis

A

Aimtract-Using the frozen stress method, mixedmode stress intensity factor (SIF) distributions were obtained for a series of low aspect ratio part circular surface flaws in flat plates over a depth to plate thickness range of 0.20-0.70. Mode I results were compared with Mode I solutions in order to sense the influence of the crack surface inclination to the free boundary. It was found that maximum SIF values did not necessarily occur at maximum flaw depth. A rationale is offered to explain this observation. It was also found that the effect of the boundary inclination,was to reverse the relative magnitudes of K,/K, and K,/& in going from a 30" to a 60" crack surface inclination with the boundary.