Heat transfer analysis of automated fiber placement of thermoplastic composites using a hot gas torch

With more and more use of composites in engineering applications, the need for automated composites manufacturing is evident. The use of automated fiber placement (AFP) machine for the manufacturing of thermoplastic composites is under rapid development. In this technique, a moving heat source (hot...

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Autores principales:	Omid Aghababaei Tafreshi, Suong Van Hoa, Farjad Shadmehri, Duc Minh Hoang, Daniel Rosca
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2019
Materias:	thermoplastic composites automated fiber placement hot gas torch thermal analysis Polymers and polymer manufacture TP1080-1185 Automation T59.5
Acceso en línea:	https://doaj.org/article/11f8528f56734179a559595c15b3106d
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spelling	oai:doaj.org-article:11f8528f56734179a559595c15b3106d2021-12-02T11:48:46ZHeat transfer analysis of automated fiber placement of thermoplastic composites using a hot gas torch2055-035910.1080/20550340.2019.1686820https://doaj.org/article/11f8528f56734179a559595c15b3106d2019-10-01T00:00:00Zhttp://dx.doi.org/10.1080/20550340.2019.1686820https://doaj.org/toc/2055-0359With more and more use of composites in engineering applications, the need for automated composites manufacturing is evident. The use of automated fiber placement (AFP) machine for the manufacturing of thermoplastic composites is under rapid development. In this technique, a moving heat source (hot gas torch, laser, or heat lamp) is melting the thermoplastic composite tape and consolidation occurs in situ. Due to the rapid heating and cooling of the material, there are many issues to be addressed. First is the development of the temperature distribution in different directions which gives rise to temperature gradients. Second is the quality of the bond between different layers, and third is the rate of material deposition to satisfy industrial demand. This paper addresses the first issue. The temperature distribution affects the variation in crystallinity, and residual stresses throughout the structure as it is being built. The result is the distortion of the composite laminate even during the process. In order to address this problem, first the temperature distribution due to a moving heat source needs to be determined. From the temperature distribution, the development and distribution of crystallinity, residual stresses and deformation of the structure can then be determined. As the first phase of the work, this paper investigates the temperature distribution due to a moving heat source for thermoplastic composites, without considering the material deposition. A finite difference (FD) code based on energy balance approach is developed to predict the temperature distribution during the process. Unidirectional composite strips are manufactured using AFP and fast-response K-type thermocouples (response time of 0.08 s, as compared to normal thermocouples with response time of 0.5 s) are used to determine the thermal profiles in various locations through the thickness of the composite laminate subjected to a moving heat source. It is shown that temperature variations measured experimentally during the heating pass, using thermocouples embedded into the composite substrate, underneath layers of the composite material, are consistent with the generated thermal profiles from the numerical model. The temperature distribution, in both the direction of the tape and through-thickness direction can be predicted numerically.Omid Aghababaei TafreshiSuong Van HoaFarjad ShadmehriDuc Minh HoangDaniel RoscaTaylor & Francis Grouparticlethermoplastic compositesautomated fiber placementhot gas torchthermal analysisPolymers and polymer manufactureTP1080-1185AutomationT59.5ENAdvanced Manufacturing: Polymer & Composites Science, Vol 5, Iss 4, Pp 206-223 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	thermoplastic composites automated fiber placement hot gas torch thermal analysis Polymers and polymer manufacture TP1080-1185 Automation T59.5
spellingShingle	thermoplastic composites automated fiber placement hot gas torch thermal analysis Polymers and polymer manufacture TP1080-1185 Automation T59.5 Omid Aghababaei Tafreshi Suong Van Hoa Farjad Shadmehri Duc Minh Hoang Daniel Rosca Heat transfer analysis of automated fiber placement of thermoplastic composites using a hot gas torch
description	With more and more use of composites in engineering applications, the need for automated composites manufacturing is evident. The use of automated fiber placement (AFP) machine for the manufacturing of thermoplastic composites is under rapid development. In this technique, a moving heat source (hot gas torch, laser, or heat lamp) is melting the thermoplastic composite tape and consolidation occurs in situ. Due to the rapid heating and cooling of the material, there are many issues to be addressed. First is the development of the temperature distribution in different directions which gives rise to temperature gradients. Second is the quality of the bond between different layers, and third is the rate of material deposition to satisfy industrial demand. This paper addresses the first issue. The temperature distribution affects the variation in crystallinity, and residual stresses throughout the structure as it is being built. The result is the distortion of the composite laminate even during the process. In order to address this problem, first the temperature distribution due to a moving heat source needs to be determined. From the temperature distribution, the development and distribution of crystallinity, residual stresses and deformation of the structure can then be determined. As the first phase of the work, this paper investigates the temperature distribution due to a moving heat source for thermoplastic composites, without considering the material deposition. A finite difference (FD) code based on energy balance approach is developed to predict the temperature distribution during the process. Unidirectional composite strips are manufactured using AFP and fast-response K-type thermocouples (response time of 0.08 s, as compared to normal thermocouples with response time of 0.5 s) are used to determine the thermal profiles in various locations through the thickness of the composite laminate subjected to a moving heat source. It is shown that temperature variations measured experimentally during the heating pass, using thermocouples embedded into the composite substrate, underneath layers of the composite material, are consistent with the generated thermal profiles from the numerical model. The temperature distribution, in both the direction of the tape and through-thickness direction can be predicted numerically.
format	article
author	Omid Aghababaei Tafreshi Suong Van Hoa Farjad Shadmehri Duc Minh Hoang Daniel Rosca
author_facet	Omid Aghababaei Tafreshi Suong Van Hoa Farjad Shadmehri Duc Minh Hoang Daniel Rosca
author_sort	Omid Aghababaei Tafreshi
title	Heat transfer analysis of automated fiber placement of thermoplastic composites using a hot gas torch
title_short	Heat transfer analysis of automated fiber placement of thermoplastic composites using a hot gas torch
title_full	Heat transfer analysis of automated fiber placement of thermoplastic composites using a hot gas torch
title_fullStr	Heat transfer analysis of automated fiber placement of thermoplastic composites using a hot gas torch
title_full_unstemmed	Heat transfer analysis of automated fiber placement of thermoplastic composites using a hot gas torch
title_sort	heat transfer analysis of automated fiber placement of thermoplastic composites using a hot gas torch
publisher	Taylor & Francis Group
publishDate	2019
url	https://doaj.org/article/11f8528f56734179a559595c15b3106d
work_keys_str_mv	AT omidaghababaeitafreshi heattransferanalysisofautomatedfiberplacementofthermoplasticcompositesusingahotgastorch AT suongvanhoa heattransferanalysisofautomatedfiberplacementofthermoplasticcompositesusingahotgastorch AT farjadshadmehri heattransferanalysisofautomatedfiberplacementofthermoplasticcompositesusingahotgastorch AT ducminhhoang heattransferanalysisofautomatedfiberplacementofthermoplasticcompositesusingahotgastorch AT danielrosca heattransferanalysisofautomatedfiberplacementofthermoplasticcompositesusingahotgastorch
_version_	1718395210083336192

Heat transfer analysis of automated fiber placement of thermoplastic composites using a hot gas torch

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