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Evaluation of effect of thermal stresses on results obtained from single fiber fragmentation test
2008 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The aim of the present work was fiber characterization through validity verification of the single fiber fragmentation test at different temperatures in carbon fiber composites. The SFFT has been used commonly to characterize interface in polymer composites. We expected that carbon fiber do not present any temperature influence during its behavior and assume that carbon fibers, as a brittle material, followed Weibull distribution. As we mentioned above, SFFT on single fiber composites has been performed at different temperatures with a strain rate of 2%. Neat resin specimens were tested at same parameters and conditions in order to obtain stress-strain curves and used them as reference curves for data analysis. Weibull parameters were found once SFFT data was corrected by using neat resin curves for each tested temperature, respectively. No temperature effect was observed for three mentioned experiments. Results for room temperature tests were compared with experimental results from single fiber tensile test (SFTT) and no difference in obtained results was noted. Thermal stress effect was also evaluated due to manufacturing temperatures changes and it is noted that this effect has to be taken into account in results obtained via SFFT.

Place, publisher, year, edition, pages
2008.
Keyword [en]
Technology, thermal, stress, fragmentation, carbon fiber, single fiber
Keyword [sv]
Teknik
Identifiers
URN: urn:nbn:se:ltu:diva-52139ISRN: LTU-PB-EX--08/113--SELocal ID: 94896e65-1dd6-444d-bd3c-ae7a202fa6aeOAI: oai:DiVA.org:ltu-52139DiVA: diva2:1025506
Subject / course
Student thesis, at least 30 credits
Educational program
Materials Engineering, master's level
Examiners
Note
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • ieee
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