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A Statistical Study on the Effect of Local Brittle Zones (LBZs) on the Fracture Toughness (Crack Tip Opening Displacement) of Multipass Welded Joints
S. Machida
Y. Suzuki
H. Yoshinari
出版
ASTM International
, 1994
URL
http://books.google.com.hk/books?id=jc98zgEACAAJ&hl=&source=gbs_api
註釋
The paper presents the experimental heat-affected zone (HAZ) crack tip opening displacement (CTOD) test data in terms of the size and number of local brittle zones (LBZ) hit by fatigue precrack which were carried out by the Fracture Toughness of Weldments (FTW) Committee of the Japan Welding Engineering Society (JWES). The data plots of the critical CTOD versus LBZ size lead to the observation that the so-called "LBZs," which include grain-coarsened HAZ, have fracture toughness values (?c) with large scatter, but the mean value ?c seems to be represented by a function of LBZ size.
