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Ultrasonic testing and evaluation of moisture-dependent elastic properties of fir wood

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Published/Copyright: February 13, 2021
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Materials Testing
From the journal Materials Testing Volume 62 Issue 10

Abstract

With respect to their relevance for wood-related technologies, moisturedependent elastic engineering parameters of Taurus fir (Abies Cilicica (Antoine et Kotschy) Carriere) are determined from ultrasound longitudinal (2.3 MHz) and shear (1 MHz) wave velocities. The dynamic Young’s and shear modules of characteristic axes and planes decrease significantly down to 17 % at increased moisture content due to decreased wave velocities. Moisture-dependent R1 values of the modules range from 0.88 to 0.99. However, Poisson’s ratios exhibit inconsistent moisture dependent behavior. Remarkable differences between ultrasound findings and the published results from compression tests are observed. Generally, the elastic values of wood from ultrasonic testing are reported higher than from mechanical tests. In contrast we find lower values as well. The critical issue of different ultrasound velocity sensitivity at selected directions is highlighted.

Keywords: Ultrasound; elastic constants; fir wood; moisture dependence; mechanical properties
Published Online: 2021-02-13
Published in Print: 2020-10-01

© 2020 by Walter de Gruyter Berlin/Boston

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  1. CONTENTS
  2. Materials Testing
  3. FACHBEITRÄGE
  4. Fatigue life performance of multi-material connections hybrid joined by self-piercing rivets and adhesive
  5. Effect of laser welding speed on pore formation in AA 6061 T6 alloy
  6. Comparison of FDM-printed and compression molded tensile samples
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  8. Oblique impact behavior of Al-LDPE-Al sandwich plates
  9. Tension and compression moduli characterization of a bimodular ceramic-fiber reinforced SiO2 aerogel composite
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  12. Finite element analysis and design optimization of a non-circular sandwich composite deep submarine pressure hull
  13. Determination of readiness for laying based on material moisture, corresponding relative humidity, and water release
  14. Taguchi optimization of surface roughness in grinding of cryogenically treated AISI 5140 steel
  15. Ultra-high frequency induction and conventional sintering of Al-SiO2 composites: A comparative study
  16. Mechanical, thermal and chemical properties of spent black tea doped concrete
  17. Ultrasonic testing and evaluation of moisture-dependent elastic properties of fir wood
  18. BEZUGSQUELLEN
  19. IMPRESSUM
https://doi.org/10.3139/120.111585
Keywords for this article
Ultrasound; elastic constants; fir wood; moisture dependence; mechanical properties

Articles in the same Issue

  1. CONTENTS
  2. Materials Testing
  3. FACHBEITRÄGE
  4. Fatigue life performance of multi-material connections hybrid joined by self-piercing rivets and adhesive
  5. Effect of laser welding speed on pore formation in AA 6061 T6 alloy
  6. Comparison of FDM-printed and compression molded tensile samples
  7. Effects of H2O2 and temperature on electrolytic pickling of austenitic stainless steel 304L in Na2SO4 solution
  8. Oblique impact behavior of Al-LDPE-Al sandwich plates
  9. Tension and compression moduli characterization of a bimodular ceramic-fiber reinforced SiO2 aerogel composite
  10. New submerged arc welding flux for hardfacing of Hardox steels
  11. Effects of thread rolling processing parameters on mechanical properties and microstructures of high-strength bolts
  12. Finite element analysis and design optimization of a non-circular sandwich composite deep submarine pressure hull
  13. Determination of readiness for laying based on material moisture, corresponding relative humidity, and water release
  14. Taguchi optimization of surface roughness in grinding of cryogenically treated AISI 5140 steel
  15. Ultra-high frequency induction and conventional sintering of Al-SiO2 composites: A comparative study
  16. Mechanical, thermal and chemical properties of spent black tea doped concrete
  17. Ultrasonic testing and evaluation of moisture-dependent elastic properties of fir wood
  18. BEZUGSQUELLEN
  19. IMPRESSUM
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