✦ LIBER ✦

Determination of KIC of mild steel by the impact method of testing side-grooved precracked TPB specimens

✍ Scribed by Yi Liu; Xue-Wen Tao; Nai-Ji Liu; Xiao-Wei Li

Publisher: Elsevier Science
Year: 1987
Tongue: English
Weight: 235 KB
Volume: 28
Category: Article
ISSN: 0013-7944
DOI: 10.1016/0013-7944(87)90229-3

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✦ Synopsis

The impact energy of a side-grooved precracked three point bend specimen was correlated with fracture toughness K rc by experimental investigation and a formula which was found to be suitable for this kind of specimen was derived using the dimensional analysis method. Two kinds of mild steel were tested to determine the formula and a kind of rapid and inexpensive non-standard testing method of Krc was proposed.

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## AbstracG-Based on Eftis and Liebowitz's empirical formula for a load-displacement curve, a method for determining .& of mild steel from the maximum load point on P-A curve was proposed. The effect of subcritical crack growth was considered. The test results on two kinds of steel were compared w