Influence of preconsolidation on consolidation quality after stamp forming of C/PEEK composites

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Stamp forming is a rapid manufacturing technology used to shape flat blanks of thermoplastic composite material into three-dimensional components. Currently, expensive autoclave and press consolidation are used to preconsolidate blanks. This study investigates the influence of preconsolidation on final consolidation quality after stamp forming and explores the potential of alternative blank manufacturing methods that could reduce part costs. Blanks were manufactured using various blank manufacturing methods and subsequently were stamp formed. The consolidation quality both before and after stamp forming was compared, where the focus was on void content as the main measure for consolidation quality. The void content was characterized through thickness and density measurements, as well as by microscopy analysis. Results indicate that preconsolidation quality does have an influence on the final consolidation quality. This is due to the severe deconsolidation and limited reconsolidation during stamp forming. Nevertheless, the potential of automated fiber placement and ultrasonic spot welding as alternative blank manufacturing methods was demonstrated.
Original languageEnglish
Title of host publicationESAFORM 2016: proceedings of the 19th international ESAFORM conference on material forming
EditorsFrancisco Chinesta, Elias Cueto, Emmanuelle Abisset-Chavanne
Place of PublicationNantes, France
ISBN (Print)978-0-7354-1427-3
Publication statusPublished - 27 Apr 2016
EventESAFORM 2016: 19th International ESAFORM Conference on Material Forming - Nantes, France
Duration: 27 Apr 201629 Apr 2016
Conference number: 19

Publication series

ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


ConferenceESAFORM 2016
Abbreviated titleESAFORM


  • METIS-318180
  • IR-101639


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