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2021, vol. 69, iss. 2, pp. 16-20
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Mechanical failure of mulberry and tasar silk
Mehanički kvar mulberry (dudove) i tasar svile
Bannari Amman Institute of Technology, Department of Fashion Technology, Sathyamangalam, India
email: subratactl@gmail.com
Keywords: mulberry silk; tasar silk; tenacity; twist to break; fracture morphology
Ključne reči: mulberry (dudova) svila; tasar svila; izdržljivost; uvijanje do pucanja; morfologija preloma
Abstract
This article investigates the tensile and twist failure of mulberry and tasar silk filaments. The mulberry and tasar filaments were subjected to uniaxial loading on Instron tensile tester at different rate of extensions and gauge lengths. Furthermore, the number of turns to rupture the silk filaments was tested using a twist tester. The results showed that the mulberry filament has higher tensile and twist strength than that of tasar filament. The SEM photomicrographs of the region of fracture divulged that the tensile and twist failure of mulberry and tasar filaments take place in catastrophic and non-catastrophic modes, respectively.
Sažetak
Ovaj rad istražuje zatezanje i uvrtanje svilene niti duda i tasara. Niti duda i tasara bile su podvrgnute jednoosnom opterećenju na Istron ispitivaču zatezanja pri različitim stepenima ekstenzije i mernim dužinama. Štaviše, broj obrtaja za pucanje svilenih niti testiran je pomoću testera za uvijanje. Rezultati su pokazali da dudov filament ima veću zateznu i zavojnu čvrstoću od tasar filamenta. SEM fotomikrografi je područja preloma otkrile su da se zatezanje i uvijanjeniti duda i tasara odvijaju u katastrofalnom i nekatastrofalnom režimu, respektivno.
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