Inverse analysis method for photoelastic measurement of 3D stress state

M. L L Wijerathne, Kenji Oguni, Muneo Hori

Research output: Contribution to journalArticle

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
Externally publishedYes

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Loads (forces)
Boundary conditions
Measurement errors
Photoelasticity
Nonlinear equations
Elasticity

Keywords

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

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemical Engineering (miscellaneous)

Cite this

Inverse analysis method for photoelastic measurement of 3D stress state. / Wijerathne, M. L L; Oguni, Kenji; Hori, Muneo.

In: Key Engineering Materials, Vol. 261-263, No. I, 2004, p. 753-758.

Research output: Contribution to journalArticle

Wijerathne, MLL, Oguni, K & Hori, M 2004, 'Inverse analysis method for photoelastic measurement of 3D stress state', Key Engineering Materials, vol. 261-263, no. I, pp. 753-758.
Wijerathne, M. L L ; Oguni, Kenji ; Hori, Muneo. / Inverse analysis method for photoelastic measurement of 3D stress state. In: Key Engineering Materials. 2004 ; Vol. 261-263, No. I. pp. 753-758.
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