Temperature analysis for the laser-assisted tape winding process of multi-layered composite pipes

Schäkel, Martin; Hosseini, Seyed Mohammad Amin; Janssen, Henning; Baran, İsmet; Brecher, Christian

doi:10.1016/j.procir.2019.09.003

Cited by 16 publications

(12 citation statements)

References 9 publications

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“…To achieve the desired processing temperature at the nip line, it is very important to preheat the tape and substrate surfaces because the material is advected or the heat input is transported toward the bonding region with the tape feeding rate. The heat source in ATW processes can be a hot gas torch [5], infrared lamp [6,7], or, recently, nearinfrared (NIR) diode lasers better known as laser-assisted tape winding (LATW) [8][9][10][11][12]. In case of the adjacent hoop winding process which is used to manufacture thermoplastic pipes as seen in Fig.…”

Section: Nomenclature C Pmentioning

confidence: 99%

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Non-uniform crystallinity and temperature distribution during adjacent laser-assisted tape winding process of carbon/PA12 pipes

Hosseini

Schäkel

Baran

et al. 2020

Int J Adv Manuf Technol

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The non-uniform temperature and crystallinity distributions present in carbon fiber–reinforced PA12 composite pipes, produced via laser-assisted tape winding (LATW), are investigated in this paper. The width of the laser source is usually larger than the substrate width which causes multiple heating and cooling of some regions of the (neighboring) substrate and hence temperature and crystallinity gradients during the adjacent hoop winding. A kinematic-optical-thermal (KOT) model coupled with a non-isothermal crystallinity model is developed to capture the transient temperature and crystallinity distributions for growing substrate thickness and width. The predicted temperature trends are validated with thermocouple and thermal camera measurements. The substrate temperature varies in the width direction up to 52%. This will lead to extra polymer remelting and possible degradation. The maximum variation of the crystallinity degree across the width is found to be 270% which shows agreement with the trend of the measured crystallinity degree. It is found that a more realistic description of the melting behavior of the matrix is needed to obtain a more accurate prediction of the crystallinity distribution.

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Section: Nomenclature C Pmentioning

confidence: 99%

“…Several studies have focused on monitoring the temperature during AFP or ATW processes where multiple tapes are deposited on top of each other [9,11,22,[35][36][37]. However, the critical analysis of the adjacent AFP/ATW process of fiber-reinforced polymer composites has received less attention in the literature.…”

Section: Nomenclature C Pmentioning

confidence: 99%

Non-uniform crystallinity and temperature distribution during adjacent laser-assisted tape winding process of carbon/PA12 pipes

Hosseini

Schäkel

Baran

et al. 2020

Int J Adv Manuf Technol

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“…Significant temperature gradients were found for the deposited regions having overlapped tows, gaps and twists. The through-thickness temperature in between the deposited layers was measured by using thermocouples in [28] for a LATW process. The measured temperature was compared with the opticalthermal model predictions.…”

Section: Introductionmentioning

confidence: 99%

“…A comprehensive 3D reflection model was developed in [34] for carbon fiber reinforced thermoplastic composite tapes. A "micro-half-cylinder" model was implemented in a CAD model which was subsequently used in OptiCAD software to simulate the anisotropic reflective [13] No Multiple Hot gas torch Convective Thermocouple AS4/epoxy ATW [39] No Multiple Hot gas torch Convective Pyrometer G/PP, W f = 70% ATW [4] No Multiple Infrared heating Radiative N/A graphite/epoxy, S-glass/epoxy ATW [18] No Multiple Infrared heating Radiative N/A graphite/epoxy ATW [14] No Multiple NIR diode laser Anisotropic ray tracing IR camera C/PEEK AFP [23] No Multiple IR heating Radiative IR camera, Thermocouple Toray T800S/3900-2 AFP [27] No Multiple NIR diode laser Specular ray tracing IR camera, Thermocouple PA-6/carbon ATW [28] No Multiple NIR diode laser Anisotropic ray tracing IR camera, Thermocouple PA12/carbon V f = 45% behavior of tapes. The same optical model was used in [33] to predict the temperature distribution in an AFP process in which the roller deformation was taken into account.…”

Section: Introductionmentioning

confidence: 99%

On the temperature evolution during continuous laser-assisted tape winding of multiple C/PEEK layers: The effect of roller deformation

et al. 2020

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Laser-assisted tape winding (LATW) is a highly automated process for manufacturing tubular-like fiber-reinforced thermoplastic composites such as flywheels and pipes. One of the crucial parameters in the LATW process is the temperature of the nip point at which the incoming prepreg tape is bonded with the substrate by a compaction roller. Therefore, the temperature evolution of the nip point plays a significant role to have a proper consolidation at the tape-substrate interface. The nip point temperature is highly affected by the time-dependent geometry of the substrate and roller during continuous LATW of thick composite rings. In this paper, a critical assessment of the substrate and tape surface temperature evolution is investigated experimentally by means of a thermal camera during the LATW process of a 26-layers thick carbon/PEEK composites. A three-dimensional (3D) optical model is coupled with a thermal model in which the substrate computational domain is updated with respect to the deposited tapes. A good agreement is found between the measured and predicted tape and substrate temperatures. The total absorbed heat and heated length of the substrate and tape are described based on the roller deformation. An increase in tape and substrate nip point temperatures is found with an increase in roller deformation during consecutive winding. It is also found that the consolidation pressure and contact length at the roller-substrate interface increases during the winding process. Accordingly, the heat transfer coefficient at the roller-substrate interface is studied using the developed process model.

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“…The inherent variations in geometry and material properties makes the process difficult to control often leading to deviations of the desired temperature at the nip point. [9][10][11][12] In addition, non-constant process temperatures are present during continuous LATW of tape layers on top of each other which was studied extensively in literature 13 for manufacturing of type-IV pressure vessels made of continuous glass fiber reinforced high density polyethylene (G/HDPE). It was shown that the local heating and cooling cycles during the LATW process significantly affected the process temperature.…”

Section: Introductionmentioning

confidence: 99%

A fully coupled local and global optical-thermal model for continuous adjacent laser-assisted tape winding process of type-IV pressure vessels

Zaami

Schäkel

Baran

et al. 2020

Journal of Composite Materials

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A numerical process simulation framework is introduced in this paper to describe and predict the process temperature evolution during the laser-assisted tape winding (LATW) process of a type-IV pressure vessel made of glass-reinforced high-density polyethylene (G/HDPE). A local optical-thermal model is fully coupled with a global thermal model for the simulation of continuous adjacent hoop winding cases. The predicted tape and substrate temperatures are compared with the experimental data to validate the process model’s effectiveness. The inline temperature was measured by an infrared thermographic camera during the continuous winding. The continuous process temperature of the substrate is affected significantly due to the previously wound layers including the pressure vessel, and a gradual increase of the temperature of the roller and the air inside the liner. A considerable temperature increase calculated as 80-120°C takes place for the substrate during winding of two consecutive layers of (G/HDPE) prepreg tape at the liner ends. The influence of pressure vessel size on the tape and substrate temperatures is investigated for different liner radii using the validated process model. The peak substrate temperature is found to increase approximately 45°C by reducing the radius of the pressure vessel from 272 mm to 68 mm while maintaining all other process conditions constant.

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Temperature analysis for the laser-assisted tape winding process of multi-layered composite pipes

Cited by 16 publications

References 9 publications

Non-uniform crystallinity and temperature distribution during adjacent laser-assisted tape winding process of carbon/PA12 pipes

Non-uniform crystallinity and temperature distribution during adjacent laser-assisted tape winding process of carbon/PA12 pipes

On the temperature evolution during continuous laser-assisted tape winding of multiple C/PEEK layers: The effect of roller deformation

A fully coupled local and global optical-thermal model for continuous adjacent laser-assisted tape winding process of type-IV pressure vessels

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