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Moisture content effect on ultrasonic velocity in Goupia glabra
- Source :
- Materials Research, Vol 8, Iss 1, Pp 11-14 (2005), Materials Research, Volume: 8, Issue: 1, Pages: 11-14, Published: MAR 2005, Materials Research v.8 n.1 2005, Materials research (São Carlos. Online), Universidade Federal de São Carlos (UFSCAR), instacron:ABM ABC ABPOL
- Publication Year :
- 2005
- Publisher :
- Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol), 2005.
-
Abstract
- This paper discusses the application of ultrasound waves on a Brazilian hardwood, Goupia glabra, to evaluate the sensitivity of the ultrasonic technique to the moisture content in wood. The velocity of ultrasonic wave is sensitive to the material's quality-determining factors; hence, this technique is an important industrial tool to improve the quality control of processes. The nature of the response of velocity of sound to changes in moisture content led us to conclude that moisture gradients during drying exert a dominating effect. The ultrasonic velocity was measured both parallel and perpendicular to the fibers of Goupia glabra during drying from green to 6% moisture content. The results of this study showed that velocity of ultrasonic waves is sensitive to changes in moisture content of lumber during drying. The velocity under dry conditions was always higher than the velocity under more humid conditions, in both directions of propagation.
- Subjects :
- Materials science
Moisture
biology
business.industry
Mechanical Engineering
Ultrasound
Condensed Matter Physics
biology.organism_classification
Goupia glabra
ultrasonic velocity
Mechanics of Materials
Ultrasonic velocity
Speed of sound
Hardwood
lcsh:TA401-492
General Materials Science
Ultrasonic sensor
lcsh:Materials of engineering and construction. Mechanics of materials
Composite material
business
Water content
moisture content
wood
Subjects
Details
- Language :
- English
- ISSN :
- 15161439
- Volume :
- 8
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Materials Research
- Accession number :
- edsair.doi.dedup.....28ccbf1eda3dbd329c00f4be8a9a90fa