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Influence of ultrasounds on some mechanical properties of fir wood (Abies alba Mill). Microscopic sectionsIt was found that as a result of ultrasonic treatment fir wood (Abies alba Mill) shows the effects of homogenization, and the modulus of elasticity for static flexure drops on an average by 50% for 45 min of treatment. The drop is more pronounced for test pieces with 8 to 12 annual rings. Study of microscopic sections disclosed that early wood with one annual ring undergoes the most powerful effect.
Document ID
19740015151
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Parpala, V. (Kanner (Leo) Associates Redwood City, CA, United States)
Pastirnac, A. (Kanner (Leo) Associates Redwood City, CA, United States)
Paraschiv, N. (Kanner (Leo) Associates Redwood City, CA, United States)
Date Acquired
August 7, 2013
Publication Date
April 1, 1974
Publication Information
Publication: The 4th Natl. Conf. on Acoustics, Vol. 2, B (NASA-TT-F-15663)
Subject Category
Physics, General
Accession Number
74N23264
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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