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Experimental and numerical investigation of thickness effect on ductile fracture toughness of steel alloy sheets

✍ Scribed by A.R. Shahani; M. Rastegar; M. Botshekanan Dehkordi; H. Moayeri Kashani

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
983 KB
Volume
77
Category
Article
ISSN
0013-7944

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✦ Synopsis

Effect of thickness on ductile fracture toughness of plates made of steel alloy GOST 08Ch22N6T is investigated experimentally. Multiple specimen tests for determining fracture toughness have been conducted using compact tension (CT) specimens with thicknesses of 1.25, 1.64 and 4.06 mm according to standard test method ASTM E813. The results show the significant effect of thickness on fracture toughness. It is observed that in low thickness, J c increases with the thickness increase until it reaches a maximum; however, further increase in the thickness causes the J c -value to decrease. Two-dimensional finite element analysis is also performed to reproduce the experimental results. The comparison shows a very good agreement.

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