Availability of Opal Photonic Crystal Films for Visualizing Heterogeneous Strain Evolution in Steels: Example of Lüders Deformation

Zhipeng Yang, Motomichi Koyama, Hiroshi Fudouzi, Tomohiko Hojo, Eiji Akiyama

Research output: Contribution to journalArticlepeer-review

Abstract

An opal photonic crystal film was applied to characterize local strain evolution associated with Lürders band propagation in an annealed low carbon steel. A local change in color of the opal film was observed, which corresponded to the propagation of the Lürders band. In particular, we carried out two tensile experiments for line and area analyses of RGB (Red-Green-Blue) values of the opal films pasted on the specimens. Both of the experiments clearly exhibited a quantitative correspondence between color variation and local strain evolution, namely, the present study demonstrated the potential of the opal films to analyze heterogeneous strain evolution in steels.

Original languageEnglish
JournalIsij International
Volume60
Issue number11
DOIs
Publication statusPublished - 2020 Nov 15

Keywords

  • Low carbon steel
  • Lüders banding
  • Opal film
  • RGB analysis
  • Strain mapping

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Availability of Opal Photonic Crystal Films for Visualizing Heterogeneous Strain Evolution in Steels: Example of Lüders Deformation'. Together they form a unique fingerprint.

Cite this