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Y M CHEN and M L WILKINS
R A WULLAERT W L SERVER W OLDFIELD and T R WILSHAW
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alloy analysis applied ASTM behaviour bend brittle calculated crack arrest crack extension crack growth crack length crack propagation crack tip crack velocity critical curve decrease deformation determined drop weight ductile dynamic fracture toughness dynamic stress intensity dynamic tear dynamic tests dynamic toughness effect elastic embrittlement Eng'g evaluation experimental finite element analysis flat fracture frac fracture energy fracture mechanics fracture propagation fracture resistance fracture toughness values impact loading increase inertial Instrumented impact testing kinetic energy Kmax linear linear elastic loading rates machine material measured Mech mild steel mode notch obtained occurs opening displacement oscillations parameter photoelastic plane strain plastic zone plate pressure vessel procedure properties record running crack shear lip shown in Fig strain energy strain rate stress intensity factor structural steels tensile test methods test results test specimen testpiece thickness tion transducer ture weld yield strength yield stress Young's modulus