Evaluating stress triaxiality and fracture strain of steel sheet using stereovision

D. Kanazawa, Satoru Yoneyama, K. Ushijima, J. Naito, S. Chinzei

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

This paper studies a method for evaluating the stress triaxiality and the fracture strains of thin steel plates which are used for an automobile body frame. Three-dimensional displacements and strains on the surface of the thin steel plates are measured using a stereovision. In particular, to measure the through-thickness deformation of the steel plates, the measurements are performed from the both sides of the steel plates. Based on the strain incremental theory, the stress triaxiality is evaluated from the measured strains considering the variation of the thickness of the steel plates. The effectiveness of the proposed procedure is validated by applying it to the evaluation of the stress triaxiality of high strength steel plates. Results show that the stress triaxiality and the fracture strains can be evaluated by the proposed method.

Original languageEnglish
Title of host publicationAdvancement of Optical Methods in Experimental Mechanics - Proceedings of the 2016 Annual Conference on Experimental and Applied Mechanics
EditorsCesar Sciammarella, Luciano Lamberti, Sanichiro Yoshida
PublisherSpringer New York LLC
Pages271-277
Number of pages7
ISBN (Print)9783319415994
DOIs
Publication statusPublished - 1 Jan 2017
EventAnnual Conference on Experimental and Applied Mechanics, 2016 - Orlando, United States
Duration: 6 Jun 20169 Jun 2016

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
Volume3
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Conference

ConferenceAnnual Conference on Experimental and Applied Mechanics, 2016
Country/TerritoryUnited States
CityOrlando
Period6/06/169/06/16

Keywords

  • Digital image correlation
  • Fracture strain
  • Fracture stress
  • Stereo vision
  • Stress triaxiality
  • Stress-strain curve
  • Tensile strength

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