Elastic-plastic analysis of scabbing in materials

✍ Scribed by Sudhir Kumar; Norman Davids

• Publisher: Elsevier Science
• Year: 1958
• Tongue: English
• Weight: 684 KB
• Volume: 265
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/0016-0032(58)90712-9

✦ Synopsis

This paper continues the analysis of scabbing in materials in terms of wave propagation effects due to the presence of plasticity. It presents the elastic and the elasto-plastic analysis of stress states which can cause scabbing. A particular problem is solved for scabbing in a bar of 14S-T4 aluminum using a triangular pressure pulse of peak intensity slightly more than twice the yield stress and duration 50 microseconds. One 4-in. scab is obtained by the elastic analysis, none by the elasto-plastic, confirming that plastic flow tends to prevent scabbing. Some of the general implications of the method are discussed.