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Robust Manufacturing of Composite Parts: Analysis of Spring-in Shape Distortions
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures.
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures.
2016 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The present thesis investigates the development of shape distortion in mass produced composite components. More specifically the spring-in of corners manufactured using Resin Transfer Moulding, RTM was studied. The investigation was performed experimentally after theoretically ruling out several possible factors and parameters. A series of L-shaped brackets were manufactured and the influence of thickness and corner radius was assessed. Partly in contradiction to some previously published studies, the presented results suggest that spring-in of L-brackets produced using RTM, during fully geometrically constrained conditions and isothermal cure, are influenced by both thickness and corner radius.

Abstract [sv]

I detta examensarbete studeras hur formförändringar uppstår under massproduktion av komponenter utav kompositmaterial. Mer specifikt undersökts hur vinklar tillverkade genom Resin Transfer Moulding, RTM, fjädrar in efter det att de tas ur formen. Arbetet inleds med en litteraturstudie där en mängd olika faktorer som kan påverka in-fjädring studeras varefter experiment genomförs där flertalet av dessa undvikes. En serie L-formade vinklar tillverkas och inverkan av laminattjocklek samt vinkelradie undersöks. Delvis i motsats till vad som visats i tidigare studier, visar dessa resultat att in-fjädringen påverkas av både materialets tjocklek och radien hos L-vinklarna. Dessa härdades isotermt och var geometriskt begränsade av sitt formverktyg.

Place, publisher, year, edition, pages
2016. , 38 p.
Series
TRITA-AVE, ISSN 1651-7660 ; 2016:89
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-203820OAI: oai:DiVA.org:kth-203820DiVA: diva2:1082739
Subject / course
Lightweight Structures
Examiners
Available from: 2017-03-17 Created: 2017-03-17 Last updated: 2017-03-17Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
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More styles
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  • Other locale
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