Condition value KQ of the plane-strain fracture toughness for cylindrical specimen with ring-shaped crack

✍ Scribed by Chang Wang

• Publisher: Elsevier Science
• Year: 1988
• Tongue: English
• Weight: 517 KB
• Volume: 30
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(88)90218-4

✦ Synopsis

Abstmc(-In this paper the calculating method of the condition value I& of the plane-strain fracture toughness for cylindrical specimen with ring-shaped crack is studied according to the standard test method for plane-strain fracture toughness of metallic materials. The corresponding condition load PO is obtained from which point that the slope of the linear section of the curve P-V during it declines 4% intersects curve P-V on this point. In this paper, from safety viewpoint we consider it is dangerous that the value K1, measuring by rectangular section specimen in the standard is used to design the circular section component.