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https://scholarbank.nus.edu.sg/handle/10635/54162
Title: | A Fracture Test Method for Mode I Fracture of Thin Metal Materials | Authors: | Cotterell, B. Sim, M.C. Amrutharaj, G. Teoh, S.H. |
Keywords: | Crack-growth resistance Fatigue crack growth Fracture toughness Mode I fracture testing Polyimide film Thin materials Time-dependent fracture |
Issue Date: | Sep-1996 | Citation: | Cotterell, B.,Sim, M.C.,Amrutharaj, G.,Teoh, S.H. (1996-09). A Fracture Test Method for Mode I Fracture of Thin Metal Materials. Journal of Testing and Evaluation 24 (5) : 316-319. ScholarBank@NUS Repository. | Abstract: | A method of testing Mode I K dominated fractures in thin materials using a constrained short center notched tension specimen that is clamped along the loaded edge is described. Poisson's effect induces a lateral tension on the specimen that eliminates the buckling problems associated with thin materials. Furthermore, the stress intensity factor over a significant range of crack lengths and specimen geometries is dependent only on the nominal strain, making the test very suitable for crack-growth experiments under a constant-stress intensity factor. A very accurate approximate expression for the stress intensity factor is presented. A test using this method to measure the crack-growth resistance of Kapton 300HN polyimide film is described. | Source Title: | Journal of Testing and Evaluation | URI: | http://scholarbank.nus.edu.sg/handle/10635/54162 | ISSN: | 00903973 |
Appears in Collections: | Staff Publications |
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