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- Title
Minimizing corner cracking during the de-moulding process of industrial-size GFRP components: a case study.
- Authors
Crawford, Bryn J.; Torres, Juan; Milani, Abbas S.
- Abstract
This article, through an industrial-level case study, presents workflows employed for decision-making to mitigate cracking of glass fibre reinforced polymer (GFRP) parts in tight radii corner locations, often resulting from displacement-controlled de-moulding processes. Namely, using process simulation to evaluate the cure cycle of the GFRP composite parts, it was possible to optimize the time of de-moulding and reduce the potential for part damage. It was observed that the most significant factors influencing the corner defect were boundary conditions of the part during de-moulding, the workshop temperature and part thickness. The poorest process design case was identified as hot workshop temperature, a laminate with thickness on the upper end of tolerances and a boundary condition where most sides are free, allowing for the development of larger moment forces at the tight corners. Further to this, a de-moulding time chart was developed to account for the changes in material properties as a function of temperature and material thickness, allowing for the in situ decision-making of technicians to reduce the occurrence of corner cracks.
- Subjects
MECHANICAL properties of condensed matter; TORQUE; CASE studies; FIBERS; LAMINATED materials
- Publication
International Journal of Advanced Manufacturing Technology, 2020, Vol 111, Issue 3/4, p711
- ISSN
0268-3768
- Publication type
Article
- DOI
10.1007/s00170-020-06141-9