Correlation between hole expansion ratio (HER) and notch tensile test. (April 2019)

• Record Type: Journal Article
• Authors: Paul, Surajit Kumar
• Is Part Of: Manufacturing letters. Volume 20(2019)
• Page Start: 1
• Page End: 4
• Publication Date: 2019-04
• Subjects: Hole expansion ratio -- Notch tensile test -- Uniaxial tensile test -- Double edge notched specimen -- Edge defect; Manufacturing industries -- Periodicals; Production engineering -- Periodicals; Manufacturing industries; Periodicals; 670
• DOI: 10.1016/j.mfglet.2019.02.003
• Languages: English
• ISSNs: 2213-8463

Abstract

Abstract: Hole edge deforms in uniaxial tensile manner during hole expansion test (HET), despite that hole expansion ratio (HER) cannot be determined directly from uniaxial tensile test (UTT). Hole normally prepared by punching process and many defect like crack, dimple etc. present at hole's edge. Presence of defects at hole edge dictates that HER is a fracture based parameter and cannot be determined from normal deformation experiments e.g. UTT. An excellent correlation is established in this study between HER and notch mouth opening displacement at peak load (Δδm ) determined from notch tensile test on double edge notched specimen.