On arrested brittle cracks in structural steels in the Robertson test with a temperature gradient

✍ Scribed by Keisuke Ishikawa; Kazuo Tsuya

• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 598 KB
• Volume: 8
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(76)90035-7

✦ Synopsis

Ah&act-Macroscopic observation of the arrested cracks produced in the Robertson test with temperature gradient was carried out to investigate the behavior of arrested cracks in structural steels. The morphology of the arrested crack front was distinctly affected by two of the testing conditions, namely the temperature gradient and the applied stress. The submerging behavior was observed for all arrested cracks and conspicuously affected by the applied stress. The roughness of the cleavage surface, was also influenced by stress dis~but~n around the crack tip, as given by the sass-in~nsity factor K. However, the other main variable, i.e. temperature gradient influenced the formation of shear lips without effecting the submerging behavior or the surface roughness.