Journal article
AN ULTRASONIC OBLIQUE-INCIDENCE TECHNIQUE FOR MOISTURE DETERMINATION IN EPOXY
BRITISH JOURNAL OF NON-DESTRUCTIVE TESTING, Vol.34(10), pp.494-498
01 Oct 1992
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Abstract
An ultrasonic oblique incidence technique was used to establish a relationship between various ultrasonic parameters and moisture content. A conventional longitudinal wave normal incidence technique was also used for a comparison. Experiments were conducted on a set of EPON 828 epoxy blocks. The set was treated with fresh and salty water at 40-degrees-C. The moisture content was measured by weight differences. Results showed a significant decrease of back surface echo amplitude with increasing moisture content. The oblique incidence technique was more sensitive to the moisture content than conventional longitudinal waves at normal incidence. By the way, neutron radiography did not show sensitivity to the water absorption in the polymeric matrix composites.
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Details
- Title
- AN ULTRASONIC OBLIQUE-INCIDENCE TECHNIQUE FOR MOISTURE DETERMINATION IN EPOXY
- Creators
- D JiaoS LIJ L RoseK Pourrezaei
- Publication Details
- BRITISH JOURNAL OF NON-DESTRUCTIVE TESTING, Vol.34(10), pp.494-498
- Publisher
- British Inst Non-Destructive Testing
- Number of pages
- 5
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems
- Identifiers
- 991019184093504721
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- Domestic collaboration
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- Web of Science research areas
- Materials Science, Characterization & Testing