Mechanical properties of Bombyx mori silkworm silk subjected to microwave radiation

Autor:	Emily J. Reed, Christopher Viney
Rok vydání:	2014
Předmět:	Toughness Materials science biology Weibull modulus Mechanical Engineering fungi Stress–strain curve Condensed Matter Physics biology.organism_classification SILK Mechanics of Materials Bombyx mori Ultimate tensile strength General Materials Science Composite material Microwave Tensile testing
Zdroj:	Journal of Materials Research. 29:833-842
ISSN:	2044-5326 0884-2914
DOI:	10.1557/jmr.2014.54
Popis:	Microwave irradiation has the potential to affect the mechanical properties of natural silks. We explored several tensile properties of Bombyx mori silkworm cocoon fibers (yield stress and strain, breaking stress and strain, Young’s modulus, toughness) as a function of microwave exposure time; samples were stored in a desiccating environment prior to tensile testing. Microwave radiation did not significantly affect any of these properties. We conclude that silk can be incorporated as a reinforcing fiber—without significant deterioration in properties—into materials that are subjected to microwave processing and/or in-service microwave radiation. Microwave exposure decreased the Weibull modulus of fibers, indicating that fracture becomes less predictable as a result of the exposure. Since microwave exposure affects failure predictability but not the average breaking strength of fibers, silk is best suited for use in composite materials if microwave exposure is likely, so that load can be transferred from weaker to stronger fibers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a8801516fb7bb9c9913f92e4ab0cb56e https://doi.org/10.1557/jmr.2014.54 Zobrazit plný text záznamu Full text from SpringerLink