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Optical Interferometric Study on Loading Hysteresis

  • John Gaffney
  • Durel Hoover
  • Kohei Sunaga
  • Daisuke Tajiri
  • Takao Yamazaki
  • Sanichiro Yoshida
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

Optical interferometric technique to reveal load hysteresis is discussed. Experiments indicate that progress of deformation in the plastic regime can be characterized by two features; material rotation and strain concentration. Interferometric fringe patterns (displacement contours) indicate these two features when applied to specimens previously loaded, and thereby can be used for diagnosis of load hysteresis. These features are consistent with analysis based on a field theoretical approach to deformation and fracture that is capable of describing all stages of deformation on the same theoretical basis. Finite element modeling based on the field theoretical approach reproduces interferometric fringes showing these features.

Keywords

Plastic Model Fringe Pattern Strain Concentration Deformation Gradient Tensor Plastic Regime 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© The Society for Experimental Mechanics, Inc. 2013

Authors and Affiliations

  • John Gaffney
    • 1
  • Durel Hoover
    • 2
  • Kohei Sunaga
    • 3
  • Daisuke Tajiri
    • 3
  • Takao Yamazaki
    • 3
  • Sanichiro Yoshida
    • 3
  1. 1.Department of PhysicsUniversity of New OrleansNew OrleansUSA
  2. 2.Department of Mechanical EngineeringYokohama National UniversityYokohamaJapan
  3. 3.Department of Chemistry and PhysicsSoutheastern Louisiana UniversityHammondUSA

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