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Fracto-emission from single fibres of KevlarFracto-emission (FE) is the emission of particles (e.g. electrons, ions and photons) during and following fracture. In this paper, we present data on electron emission (EE) and positive ion emission (PIE) from the tensile fracture of Kevlar single fibers. The fibers were initially fractured in pure tension, where a stranded form of fracture was observed, often with multiple peaks spread over several hundred microseconds. The loading condition was then changed by stretching and breaking the fibers over a dull metal edge. With this change in the loading, different forms of fracture were observed, each with distinctive forms of emission curves. When fracture was accompanied by extensive fibril formation, total emission was high and both EE and PIE decay times were long relative to fractures in which little fibril formation occurred. The results of this study suggest that FE has some applicability as a tool for the detection of fracture mechanisms of single fibers.
Document ID
19850053357
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Dickinson, J. T. (Washington State Univ. Pullman, WA, United States)
Jahan-Latibari, A. (Washington State Univ. Pullman, WA, United States)
Jensen, L. C. (Washington State University Pullman, WA, United States)
Date Acquired
August 12, 2013
Publication Date
May 1, 1985
Publication Information
Publication: Journal of Materials Science
Volume: 20
ISSN: 0022-2461
Subject Category
COMPOSITE MATERIALS
Funding Number(s)
CONTRACT_GRANT: NSF DMR-82-10406
Distribution Limits
Public
Copyright
Other