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Simple assumptions are used to derive analytical expressions for the crack-tip opening displacement of center cracked tension panel (CCT) specimens with finite width. The formulas obtained thereby are used to describe the fracture behavior of CCTs of aluminum alloys. The results of 83 tests show that the crack opening displacement (COD) concept yields reasonable assessment of the fracture behavior of thin sheet material. The advantages and limitations are discussed.
COD concept, thin sheets, effect of finite width on COD, aluminum alloys, fractures (materials), crack propagation
GKSS, Research Centre Geesthacht, Geesthacht,