Residual strength of aluminum-lithium alloy center surface crack tension specimens at cryogenic temperatures

Abstract

A three parameter fracture criterion which correlates the stress and the stress intensity factor at failure, is followed for the residual or fracture strength estimations of cracked configurations made of aluminum-lithium (Al-Li) alloys. The three fracture parameters are determined from the fracture data of Al-Li alloy center surface crack tension (SCT) specimens at cryogenic temperatures. It is found that the estimated fracture strength values compare well with the test results. © 2001 Elsevier Science Ltd. All rights reserved.