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Theoretical prediction of ballistic impact performance of plain woven silk ber reinforced composites
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures.
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The aim of this thesis is to investigate the potential use of silk ber in a composite system for ballistic armors. Silk has been used in textiles for centuries and is commonly known as a luxurious textile but is of interest due to its superior mechanical properties. The most common type of silk is harvested from the bombyx mori silkworm which is usually found in Asia. Silk in general has a great toughness which makes it possible to absorb high amount of energy when subjected to impacts. Theoretical predictions of the Cunni velocity shows that b. mori silk has a ballistic impact performance comparable to that of E-glass. Due to its high elongation at break it requires a higher deformation to absorb the same amount of energy and its low wave velocity makes it less e-cient of dissipating the energy during the short time span when the projectile is in contact with the target. In theory silk should behave similar to nylon. Another problem with silk is its large variations of mechanical properties from each sample.

Place, publisher, year, edition, pages
2015. , 19 p.
Series
TRITA-AVE, ISSN 1651-7660 ; 2015:59
Keyword [en]
ballistic impact, silk, bombyx mori, composite, epoxy, plain weave, Cunni velocity
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-185020OAI: oai:DiVA.org:kth-185020DiVA: diva2:917942
Examiners
Available from: 2016-04-12 Created: 2016-04-08 Last updated: 2016-04-12Bibliographically approved

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