Acoustoelastic and acoustoplastic effects of polymethylmethacrylate measured by V( f, z) defocusing measurement system

Chun I. Lin, Yung Chun Lee

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

This paper applies a lensless line-focus poly(vinylidenefluoride) (PVDF) ultrasound transducer along with a V(f,z) defocusing measurement system to determine the acoustoelastic and acoustoplastic effects of polymethylmethacrylate (PMMA). Different strains are formed in PMMA samples using a uniaxial tensile loading mechanism. The velocity changes of leaky surface-skimming longitudinal waves under different strains are measured along various directions relative to the loading direction. The acoustoelastic coefficients are calculated from measurement results. Finally, the acoustoplastic effects of PMMA are also measured and determined. The results of acoustoelastic and acoustoplastic effects and the measurement system provide an efficient way for estimating applied and residual stresses in PMMA nondestructively.

Original languageEnglish
Article number6822991
Pages (from-to)647-653
Number of pages7
JournalIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume61
Issue number4
DOIs
Publication statusPublished - 2014 Apr

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Acoustics and Ultrasonics
  • Electrical and Electronic Engineering

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