| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5029165 | Procedia Engineering | 2017 | 7 Pages |
Abstract
In this study, to improve dimensional accuracy of thermoformed products for carbon fiber reinforced thermoplastic (CFRTP) sheet, effects of sheet thickness, cooling rate on spring-in behavior are investigated by several thermal U-bending test. Matrix resin of the CFRTP is crystalline polyamide 6 (PA6) and plain woven textiles of carbon fiber is used for reinforcement. As a result, for thick sheet and slow cooling, spring-in angle is smaller. In addition, a revised spring-in prediction formula is proposed by considering crystallinity and cooling rate into coefficient of thermal expansion for precise spring-in prediction. The calculation results are compared with experimental. The proposed prediction formula has higher prediction quality than the conventional.
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Physical Sciences and Engineering
Engineering
Engineering (General)
Authors
K. Matsushita, T. Furushima, K. Tada, K. Manabe,