The measurement of fiber strength parameters in fragmentation tests by using acoustic emission
| Autor: | Walter G. McDonough, Roger B. Clough |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Materials science
General Engineering Filter (signal processing) Epoxy behavioral disciplines and activities Signal law.invention Noise Acoustic emission Optical microscope law visual_art otorhinolaryngologic diseases Ceramics and Composites visual_art.visual_art_medium sense organs Composite material psychological phenomena and processes Energy (signal processing) Weibull distribution |
| Zdroj: | Composites Science and Technology. 56:1119-1127 |
| ISSN: | 0266-3538 |
| DOI: | 10.1016/s0266-3538(96)00076-0 |
| Popis: | The Weibull shape and scale strength parameters of E-glass fibers were measured in situ by counting the number of acoustic emission events (fractures) during the fragmentation of single-fiber E-glass/epoxy composites. A median subtraction filter provided a trigger signal sensitive to emission events but not to noise. Values obtained for the strength parameters are comparable to those obtained with optical microscopy. And, although there is considerable scatter, acoustic emission energy measurements tend to suggest that the recovery length is approximately constant at low stresses. Advantages of using acoustic emission are discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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