Lenszál tönkremeneteli mechanizmusának feltárása szakító-igénybevétel hatására az akusztikus emisszió módszerével

Translated title of the contribution: Revealing flax fibre failure mechanism under tensile stress using method of acoustic emission

Romhány Gábor, J. Karger-Kocsis, T. Czigány

Research output: Contribution to journalArticle

Abstract

In recent years, researchers, in accordance with new environment protection approaches, try to changing conventional glass and carbon fibres for natural reinforcement in composite materials. Method of acoustic emission (AE) is more and more widely used for composite analyses. To link AE parameters properly with various failure mechanisms, signals that may be emitted from the reinforcement material itself should be understood. Flax fibre failure mechanism under tensile stress was revealed using electron microscope and AE method. It was found that flax filaments separate along their weak interface, containing pectin (fibrillation), then, microcracks appear near maximum tensile stress perpendicularly to the direction of tension and finally, filaments tear when the stress reaches break strength. The failure mechanisms mentioned above are associated with amplitude values of AE signals.

Original languageHungarian
Pages (from-to)328-336
Number of pages9
JournalMuanyag Es Gumi/Plastics and Rubber
Volume39
Issue number10
Publication statusPublished - Oct 2002

Fingerprint

Flax
Acoustic emissions
Tensile stress
Fibers
Reinforcement
Composite materials
Microcracks
Glass fibers
Carbon fibers
Electron microscopes

ASJC Scopus subject areas

  • Polymers and Plastics

Cite this

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title = "Lensz{\'a}l t{\"o}nkremeneteli mechanizmus{\'a}nak felt{\'a}r{\'a}sa szak{\'i}t{\'o}-ig{\'e}nybev{\'e}tel hat{\'a}s{\'a}ra az akusztikus emisszi{\'o} m{\'o}dszer{\'e}vel",
abstract = "In recent years, researchers, in accordance with new environment protection approaches, try to changing conventional glass and carbon fibres for natural reinforcement in composite materials. Method of acoustic emission (AE) is more and more widely used for composite analyses. To link AE parameters properly with various failure mechanisms, signals that may be emitted from the reinforcement material itself should be understood. Flax fibre failure mechanism under tensile stress was revealed using electron microscope and AE method. It was found that flax filaments separate along their weak interface, containing pectin (fibrillation), then, microcracks appear near maximum tensile stress perpendicularly to the direction of tension and finally, filaments tear when the stress reaches break strength. The failure mechanisms mentioned above are associated with amplitude values of AE signals.",
author = "Romh{\'a}ny G{\'a}bor and J. Karger-Kocsis and T. Czig{\'a}ny",
year = "2002",
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pages = "328--336",
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publisher = "Scientific Society of Mechanical Engineering",
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T1 - Lenszál tönkremeneteli mechanizmusának feltárása szakító-igénybevétel hatására az akusztikus emisszió módszerével

AU - Gábor, Romhány

AU - Karger-Kocsis, J.

AU - Czigány, T.

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AB - In recent years, researchers, in accordance with new environment protection approaches, try to changing conventional glass and carbon fibres for natural reinforcement in composite materials. Method of acoustic emission (AE) is more and more widely used for composite analyses. To link AE parameters properly with various failure mechanisms, signals that may be emitted from the reinforcement material itself should be understood. Flax fibre failure mechanism under tensile stress was revealed using electron microscope and AE method. It was found that flax filaments separate along their weak interface, containing pectin (fibrillation), then, microcracks appear near maximum tensile stress perpendicularly to the direction of tension and finally, filaments tear when the stress reaches break strength. The failure mechanisms mentioned above are associated with amplitude values of AE signals.

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