Ultrasonic plate wave evaluation of natural fiber composite panels

Brian J. Tucker, Donald A. Bender, David G. Pollock, Michael P Wolcott

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Two key shortcomings of current ultrasonic nondestructive evaluation (NDE) techniques for plywood, medium density fiberboard (MDF), and oriented strandboard are the reliance on empirical correlations and the neglect of valuable waveform information. The research reported herein examined the feasibility of using fundamental mechanics, wave propagation, and laminated, shear deformable plate theories of nondestructively evaluate material properties in natural fiber-based composite panels. Dispersion curves were constructed exhibiting the variation of flexural plate wave phase velocity with frequency. Based on shear deformable laminated plate wave theory, flexural and transverse shear rigidity values for solid transversely isotropic, laminated transversely isotropic, and solid orthotropic natural fiber-based composite panels were obtained from the dispersion curves. Axial rigidity values were obtained directly from extensional plate wave phase velocity. Excellent agreement (within 3%) of flexural rigidity values was obtained between NDE and mechanical testing for most panels. Transverse shear modulus values obtained from plate wave tests were within 4% of values obtained from through-thickness ultrasonic shear wave speed. Tensile and compressive axial rigidity value obtained from NDE were 22% to 41% higher than mechanical tension and compression test results. These differences between NDE and axial mechanical testing results are likely due to load-rate effects; however, these large differences were not apparent in the flexural and transverse shear comparisons. This fundamental research advances the state-of-the-art of NDE of wood-based composites by replacing empirical approaches with a technique based on fundamental mechanics, shear deformation laminated plate theory, and plate wave propagation theory.

Original languageEnglish (US)
Pages (from-to)266-281
Number of pages16
JournalWood and Fiber Science
Volume35
Issue number2
StatePublished - Apr 1 2003

Fingerprint

natural fibers
Natural fibers
Rigidity
shear stress
ultrasonics
rigidity
Ultrasonics
Mechanical testing
Phase velocity
Composite materials
Wave propagation
phase velocity
Mechanics
wave propagation
mechanics
wave velocity
Plywood
Shear waves
Ultrasonic waves
Shear deformation

All Science Journal Classification (ASJC) codes

  • Forestry
  • Materials Science(all)

Cite this

Tucker, B. J., Bender, D. A., Pollock, D. G., & Wolcott, M. P. (2003). Ultrasonic plate wave evaluation of natural fiber composite panels. Wood and Fiber Science, 35(2), 266-281.
Tucker, Brian J. ; Bender, Donald A. ; Pollock, David G. ; Wolcott, Michael P. / Ultrasonic plate wave evaluation of natural fiber composite panels. In: Wood and Fiber Science. 2003 ; Vol. 35, No. 2. pp. 266-281.
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Tucker, BJ, Bender, DA, Pollock, DG & Wolcott, MP 2003, 'Ultrasonic plate wave evaluation of natural fiber composite panels', Wood and Fiber Science, vol. 35, no. 2, pp. 266-281.

Ultrasonic plate wave evaluation of natural fiber composite panels. / Tucker, Brian J.; Bender, Donald A.; Pollock, David G.; Wolcott, Michael P.

In: Wood and Fiber Science, Vol. 35, No. 2, 01.04.2003, p. 266-281.

Research output: Contribution to journalArticle

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Tucker BJ, Bender DA, Pollock DG, Wolcott MP. Ultrasonic plate wave evaluation of natural fiber composite panels. Wood and Fiber Science. 2003 Apr 1;35(2):266-281.