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|Title:||KIC Determination using a chevron notched compact tension specimen|
|Authors:||Lai, M.O. |
|Source:||Lai, M.O.,Lee, K.H. (1992-02). KIC Determination using a chevron notched compact tension specimen. Engineering Fracture Mechanics 41 (3) : 453-456. ScholarBank@NUS Repository.|
|Abstract:||The stress intensity factor of a standard compact tension specimen modified with a 37° chevron notch similar to those employed in short rod and short bar specimens has been evaluated using the boundary integral equation method as well as an experimental compliance test method. The minimum normalized stress intensity factor obtained was found to be in agreement within 10%. The plane strain fracture toughnesses, KIC, of three tool steel materials, viz. Assab XW-41, Assab DF2 and Rochling RCC Extra steel, have been determined at various tempering temperatures from as-quenched to 600°C using the modified compact tension specimens and also by the ASTM-E399 standard testing method. At tempering temperatures below 500°C close agreement, generally within less than 10%, has been observed in each case. As the ductility of the materials increased at higher tempering temperature, however, overestimation was observed. © 1992.|
|Source Title:||Engineering Fracture Mechanics|
|Appears in Collections:||Staff Publications|
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