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http://dx.doi.org/10.5850/JKSCT.2013.37.5.667

Fracture Morphology of Degraded Historic Silk Fibers Using SEM  

Bae, Soon Wha (Dept. of Clothing Science, Seoul Women's University)
Lee, Mee Sik (Dept. of Clothing Science, Seoul Women's University)
Publication Information
Journal of the Korean Society of Clothing and Textiles / v.37, no.5, 2013 , pp. 667-675 More about this Journal
Abstract
After analyzing excavated $17-18^{th}$ century silk fibers through a scanning electron microscopy, we discovered seven different kinds of fracture morphology. Using Morton & Hearle fiber fracture morphology, we classified the findings into four different categories. Type I is tensile failure resulting from brittle fracture, granular fracture, and ductile fracture. Type II is fatigue failure caused by tensile fatigue, flex fatigue, and axial split (fibrillation). Type III is bacterial deterioration discovered only in excavated artifacts. Type IV is a combination of the three above. Humid underground conditions and the infiltration of bacteria caused the fibers to swell and weaken its interfibrillar cohesion. Fractures occur when drying and processing an excavated artifact that is already in a fragile condition. Therefore, one must minimize damage through a prompt cleaning process and make sure that the least possible force is exerted on the fabric during any treatment for repair and exhibition.
Keywords
Excavated fabrics; Tensile fracture; Fatigue fracture; Bacterial deterioration; Scanning Electron Microscopy (SEM);
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