Inverse analysis method for photoelastic measurement of 3D stress state

M. L.L. Wijerathne, Kenji Oguni, Muneo Hori

Research output: Contribution to journalConference article

3 Citations (Scopus)

Abstract

A new nondestructive method for identifying boundary conditions applied on a 3D linear elastic body is developed based on the load incremental approach, which linearizes the nonlinear governing equation of photoelasticity by considering small increments in applied load. Direct stress identification based on load incremental approach is highly sensitive to measurement errors and involves considerable amount of computations. On the other hand, identification of boundary conditions based on load incremental approach and thereby the state of stress is not only less sensitive to measurement errors but also involves less computation. This boundary conditions identification can be considered as an introduction of equilibrium condition and the property of linear elasticity to overcome the shortcomings of direct stress identification.

Original languageEnglish
Pages (from-to)753-758
Number of pages6
JournalKey Engineering Materials
Volume261-263
Issue numberI
Publication statusPublished - 2004 Jan 1
EventAdvances in Fracture and Failure Prevention: Proceedings of the Fifth International Conference on Fracture and Strength of Solids (FEOFS2003): Second International Conference on Physics and Chemistry of Fracture and Failure Prevention (2nd ICPCF) - Sendai, Japan
Duration: 2003 Oct 202003 Oct 22

Keywords

  • 3D photoelasticity
  • Load incremental approach
  • Nonlinear inversion analysis
  • Stress measurements
  • Traction identification

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Wijerathne, M. L. L., Oguni, K., & Hori, M. (2004). Inverse analysis method for photoelastic measurement of 3D stress state. Key Engineering Materials, 261-263(I), 753-758.