ASSESSMENT OF DEFECTS AND MECHANICAL-PROPERTIES OF WOOD MEMBERS USINGULTRASONIC FREQUENCY-ANALYSIS

Authors
HALABE UB GANGARAO HVS PETRO SH HOTA VR
Citation
Ub. Halabe et al., ASSESSMENT OF DEFECTS AND MECHANICAL-PROPERTIES OF WOOD MEMBERS USINGULTRASONIC FREQUENCY-ANALYSIS, Materials evaluation, 54(2), 1996, pp. 314-322
Citations number
17
Categorie Soggetti
Materials Science, Characterization & Testing
Journal title
Materials evaluation → ACNP
ISSN journal
00255327
Volume
54
Issue
2
Year of publication
1996
Pages
314 - 322
Database
ISI
SICI code
0025-5327(1996)54:2<314:AODAMO>2.0.ZU;2-8
Abstract
Recognizing the limited value of the results from ultrasonic time-of-f light measurements, this paper emphasizes wave attenuation measurement in the frequency domain. The influence of travel distance, moisture c ontent, and the presence of defects on wave attenuation are investigat ed using fast Fourier transforms of received ultrasonic through transm ission signals. Our research results have revealed that the frequency domain analysis can significantly increase the sensitivity of predicti ons of modulus of elasticity, and strength of clear and defective wood , under controlled laboratory conditions.