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Geometric compensation of convex forming tools for successful final processing in concave cure tools - An experimental study
Saab AB, SE-58188 Linkoping, Sweden.;KTH Royal Inst Technol, Dept Aeronaut & Vehicle Engn, Teknikringen 8, SE-10044 Stockholm, Sweden..
Saab AB, SE-58188 Linkoping, Sweden.;KTH Royal Inst Technol, Dept Aeronaut & Vehicle Engn, Teknikringen 8, SE-10044 Stockholm, Sweden..
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.ORCID iD: 0000-0002-6616-2964
2019 (English)In: Composites. Part A, Applied science and manufacturing, ISSN 1359-835X, E-ISSN 1878-5840, Vol. 116, p. 187-196Article in journal (Refereed) Published
Abstract [en]

To enable shimless composite part assembly it is desired to manufacture composite spars in concave, female tools. However, due to restricted access this process is often associated with a high degree of manual operations or expensive highly specialized production equipment. This study investigates a sequential manufacturing operation where the material is automatically laid up flat and hot formed onto a convex forming tool. Thereafter it is placed in the concave tool for curing. The study investigates four different ways to geometrically compensate the forming tool to simplify seating and enhance part quality. All compensations require material movement in-between forming and curing; this movement was tracked using Micro-CT. Micrographing and optical shape measurements show that a correct compensation provides high quality parts without adding labour intensive manufacturing steps.

Place, publisher, year, edition, pages
ELSEVIER SCI LTD , 2019. Vol. 116, p. 187-196
Keywords [en]
Prepreg, CT analysis, Automation, Tooling
National Category
Vehicle Engineering
Identifiers
URN: urn:nbn:se:kth:diva-240344DOI: 10.1016/j.compositesa.2018.10.030ISI: 000451491700020Scopus ID: 2-s2.0-85056199790OAI: oai:DiVA.org:kth-240344DiVA, id: diva2:1271376
Note

QC 20181217

Available from: 2018-12-17 Created: 2018-12-17 Last updated: 2018-12-17Bibliographically approved

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Åkermo, Malin

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