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Abstract:
Nineteen photoelastic plates, containing part circular flaws inclined at 0 deg., 30 deg. and 60 deg. to the plate surface and covering an aspect ratio range of 0.10 to 0.29 and a relative depth range of 0.20 to 0.70 were loaded parallel to the plate surfaces and analyzed by the 'frozen stress' method. Photoelastic data were fed into a digital computer programmed to provide estimates of K(1), K(2) and K(3), the stress intensity factors for loading modes I, II and III. Results revealed that: (1) For the part circular flaw shape, normalized K(1) values reveal a maximum value away from the point of maximum flaw penetration which shifts further away with increasing relative flaw depth. (2) Strong effects of inclination angle and relative depth were observed but the influence of aspect ratio in the range studied here was small. (3) K(3) effects were negligible. Results were qualitatively compared with analytical results for similar problems. (Author)
| Limitations: |
 APPROVED FOR PUBLIC RELEASE |
| Description: |
Final rept. 1 Mar 76-31 Dec 77 |
| Pages: |
48 |
| Report Date: |
MAR 1978 |
| Contract Number: |
F3361576C3078 |
| Report Number: |
A682960 |
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