Stamp forming optimization for formability and crystallinity

T.G. Donderwinkel; B. Rietman; S.P. Haanappel; R. Akkerman

doi:10.1063/1.4963585

Stamp forming optimization for formability and crystallinity

T.G. Donderwinkel, B. Rietman, S.P. Haanappel, R. Akkerman

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

10 Citations (Scopus)

Abstract

The stamp forming process is well suited for high volume production of thermoplastic composite parts. The process can be characterized as highly non-isothermal as it involves local quench-cooling of a molten thermoplastic composite blank where it makes contact with colder tooling. The formability of the thermoplastic composite depends on the viscoelastic material behavior of the matrix material, which is sensitive to temperature and degree of crystallinity. An experimental study was performed to determine the effect of temperature and crystallinity on the storage modulus during cooling for a woven glass fiber polyamide-6 composite material. An increase of two decades in modulus was observed during crystallization. As this will significantly impede the blank formability, the onset of crystallization effectively governs the time available for forming. Besides the experimental work, a numerical model is developed to study the temperature and crystallinity throughout the stamp forming process. A process window can be determined by feeding the model with the experimentally obtained data on crystallization.

Original language	English
Title of host publication	ESAFORM 2016
Subtitle of host publication	Proceedings of the 19th International ESAFORM Conference on Material Forming
Editors	Francisco Chinesta, Elias Cueto, Emmanuelle Abisset-Chavanne
Place of Publication	Nantes, France
Publisher	American Institute of Physics
Number of pages	7
Edition	1
ISBN (Print)	978-0-7354-1427-3
DOIs	https://doi.org/10.1063/1.4963585
Publication status	Published - 2016
Event	ESAFORM 2016: 19th International ESAFORM Conference on Material Forming - Nantes, France Duration: 27 Apr 2016 → 29 Apr 2016 Conference number: 19

Publication series

Name	AIP conference proceedings
Publisher	American Institute of Physics
Number	1
Volume	1769
ISSN (Print)	0094-243X

Conference

Conference	ESAFORM 2016
Abbreviated title	ESAFORM
Country/Territory	France
City	Nantes
Period	27/04/16 → 29/04/16

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10.1063/1.4963585

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Donderwinkel, T. G., Rietman, B., Haanappel, S. P., & Akkerman, R. (2016). Stamp forming optimization for formability and crystallinity. In F. Chinesta, E. Cueto, & E. Abisset-Chavanne (Eds.), ESAFORM 2016: Proceedings of the 19th International ESAFORM Conference on Material Forming (1 ed.). [170029] (AIP conference proceedings; Vol. 1769, No. 1). American Institute of Physics. https://doi.org/10.1063/1.4963585

Donderwinkel, T.G. ; Rietman, B. ; Haanappel, S.P. et al. / Stamp forming optimization for formability and crystallinity. ESAFORM 2016: Proceedings of the 19th International ESAFORM Conference on Material Forming. editor / Francisco Chinesta ; Elias Cueto ; Emmanuelle Abisset-Chavanne. 1. ed. Nantes, France : American Institute of Physics, 2016. (AIP conference proceedings; 1).

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abstract = "The stamp forming process is well suited for high volume production of thermoplastic composite parts. The process can be characterized as highly non-isothermal as it involves local quench-cooling of a molten thermoplastic composite blank where it makes contact with colder tooling. The formability of the thermoplastic composite depends on the viscoelastic material behavior of the matrix material, which is sensitive to temperature and degree of crystallinity. An experimental study was performed to determine the effect of temperature and crystallinity on the storage modulus during cooling for a woven glass fiber polyamide-6 composite material. An increase of two decades in modulus was observed during crystallization. As this will significantly impede the blank formability, the onset of crystallization effectively governs the time available for forming. Besides the experimental work, a numerical model is developed to study the temperature and crystallinity throughout the stamp forming process. A process window can be determined by feeding the model with the experimentally obtained data on crystallization.",

author = "T.G. Donderwinkel and B. Rietman and S.P. Haanappel and R. Akkerman",

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Donderwinkel, TG, Rietman, B, Haanappel, SP & Akkerman, R 2016, Stamp forming optimization for formability and crystallinity. in F Chinesta, E Cueto & E Abisset-Chavanne (eds), ESAFORM 2016: Proceedings of the 19th International ESAFORM Conference on Material Forming. 1 edn, 170029, AIP conference proceedings, no. 1, vol. 1769, American Institute of Physics, Nantes, France, ESAFORM 2016, Nantes, France, 27/04/16. https://doi.org/10.1063/1.4963585

Stamp forming optimization for formability and crystallinity. / Donderwinkel, T.G.; Rietman, B.; Haanappel, S.P. et al.

ESAFORM 2016: Proceedings of the 19th International ESAFORM Conference on Material Forming. ed. / Francisco Chinesta; Elias Cueto; Emmanuelle Abisset-Chavanne. 1. ed. Nantes, France : American Institute of Physics, 2016. 170029 (AIP conference proceedings; Vol. 1769, No. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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N2 - The stamp forming process is well suited for high volume production of thermoplastic composite parts. The process can be characterized as highly non-isothermal as it involves local quench-cooling of a molten thermoplastic composite blank where it makes contact with colder tooling. The formability of the thermoplastic composite depends on the viscoelastic material behavior of the matrix material, which is sensitive to temperature and degree of crystallinity. An experimental study was performed to determine the effect of temperature and crystallinity on the storage modulus during cooling for a woven glass fiber polyamide-6 composite material. An increase of two decades in modulus was observed during crystallization. As this will significantly impede the blank formability, the onset of crystallization effectively governs the time available for forming. Besides the experimental work, a numerical model is developed to study the temperature and crystallinity throughout the stamp forming process. A process window can be determined by feeding the model with the experimentally obtained data on crystallization.

AB - The stamp forming process is well suited for high volume production of thermoplastic composite parts. The process can be characterized as highly non-isothermal as it involves local quench-cooling of a molten thermoplastic composite blank where it makes contact with colder tooling. The formability of the thermoplastic composite depends on the viscoelastic material behavior of the matrix material, which is sensitive to temperature and degree of crystallinity. An experimental study was performed to determine the effect of temperature and crystallinity on the storage modulus during cooling for a woven glass fiber polyamide-6 composite material. An increase of two decades in modulus was observed during crystallization. As this will significantly impede the blank formability, the onset of crystallization effectively governs the time available for forming. Besides the experimental work, a numerical model is developed to study the temperature and crystallinity throughout the stamp forming process. A process window can be determined by feeding the model with the experimentally obtained data on crystallization.

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M3 - Conference contribution

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T3 - AIP conference proceedings

BT - ESAFORM 2016

A2 - Chinesta, Francisco

A2 - Cueto, Elias

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Donderwinkel TG, Rietman B, Haanappel SP, Akkerman R. Stamp forming optimization for formability and crystallinity. In Chinesta F, Cueto E, Abisset-Chavanne E, editors, ESAFORM 2016: Proceedings of the 19th International ESAFORM Conference on Material Forming. 1 ed. Nantes, France: American Institute of Physics. 2016. 170029. (AIP conference proceedings; 1). doi: 10.1063/1.4963585

Stamp forming optimization for formability and crystallinity

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