SEDL / STP / STP1130-EB / STP15521S

A New Method to Test Crack-Arrest Toughness by Using Three-Point Bend Specimens

Varga, T
professors, Laboratory of Testing and Research in Material Technology (TVFA)University of Technology Vienna, Vienna,

Schneeweiss, G
professors, Laboratory of Testing and Research in Material Technology (TVFA)University of Technology Vienna, Vienna,

Pages: 13    Published: Jan 1992

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Abstract

This paper demonstrates the applicability of small and simple specimens to measure crack-arrest toughness, K^Ia. Specimens used up to now were large or of complicated geometry. Using small instrumented three-point bend specimens of simple geometry, possibilities and limitations were investigated. K^Ia values measured on compact crack arrest specimens and, respectively, by using three-point bend specimens have been compared. The results of such investigations on steel A 533 grade B class 1 are shown.