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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
ISSN: 00903973
Appears in Collections:Staff Publications

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