Abstract
A further-miniaturized specimen punch (SP) test has been developed to extract fracture strain and strength information from TEM disc specimens as small as 3 mm diameter and 0.25 mm in thickness. The test is based on driving a steel ball punch through a clamped specimen. A perfect-rigid plastic analysis has been made to extract fracture strain and the deformation process of the further-miniaturized specimen test is divided into three regions, as in the 10 mm × 10 mm × 0.5 mm specimen. The size effect of biaxial equivalent fracture strain of various kinds of materials has been demonstrated. The results of fracture strain obtained from 3 mm diameter specimens can be related almost linearly to the fracture toughness, JIC, for elastic-plastic behavior. A number of correlations also have been obtained between features of the load-displacement curve of the SP test and the mechanical properties, such as yield stress and ultimate stress.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
