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Optical absorption of epoxy resin and its role in the laser ultrasonic generation mechanism in composite materials
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UNSPECIFIED (2003) Optical absorption of epoxy resin and its role in the laser ultrasonic generation mechanism in composite materials. In: 29th Annual Review of Progress in Quantitative Nondestructive Evaluation, JUL 14-19, 2002, WESTERN WASHINGTON UNIV, BELLINGHAM, WA.
Full text not available from this repository.Abstract
Epoxy resins are used in various applications and are essential to the fabrication of carbon fibre reinforced composite materials (CFRCs). This paper investigates laser generated ultrasound in epoxy resins using three different lasers, a TEA CO2, a Nd:YAG and a XeCl excimer. In these partially transparent materials the ultrasonic generation mechanism is directly related to the optical absorption depth which can therefore be measured directly from the ultrasonic waveforms using for example a Michelson interferometer as detector. The present work aims firstly to relate the observed amplitude of the longitudinal wave to the optical absorption depth of the epoxy and secondly to evaluate the role of the epoxy resin to the generation of the ultrasound in CFRCs. For the latter, comparative results of generation efficiency between the three wavelengths are presented and an attempt is made to understand the way that the resin matrix influences the generation mechanism of ultrasound in composite materials.
| Item Type: | Conference Item (UNSPECIFIED) |
|---|---|
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering Q Science > QC Physics |
| Series Name: | REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION |
| Journal or Publication Title: | REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 22A AND 22B |
| Publisher: | AMER INST PHYSICS |
| ISBN: | 0-7354-0117-9 |
| Editor: | Thompson, DO and Chimenti, DE |
| Date: | 2003 |
| Volume: | 20 |
| Number: | Part A&B |
| Number of Pages: | 8 |
| Page Range: | pp. 965-972 |
| Publication Status: | Published |
| Title of Event: | 29th Annual Review of Progress in Quantitative Nondestructive Evaluation |
| Location of Event: | WESTERN WASHINGTON UNIV, BELLINGHAM, WA |
| Date(s) of Event: | JUL 14-19, 2002 |
| URI: | http://wrap.warwick.ac.uk/id/eprint/9019 |
Data sourced from Thomson Reuters' Web of Knowledge
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