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In-Situ Consolidation of Complex Curvature Thermoplastic Composite Part Manufactured by Automated Fiber Placement


Title: In-Situ Consolidation of Complex Curvature Thermoplastic Composite Part Manufactured by Automated Fiber Placement

Authors: Dan Ursenbach, Justin Merotte and Noushin Bahramshahi

DOI: 10.33599/nasampe/s.20.0201

Abstract: This paper presents a project at Collins Aerospace on the manufacturing of complex curvature thermoplastic composite parts with laser assisted fiber placement (LAFP) in-situ consolidation. To date, most of the work done in in-situ consolidated thermoplastic AFP parts have been limited to simple curvature parts, or body of revolution parts where the AFP process has been used much like a Filament Winding process. This work investigates the processing of a complex 3D part with double curvature surface and confined space constraints via LAFP in-situ consolidation. A true 3D complex curvature part inevitably contains fiber convergence zones, and the gaps associated with such zones. These gaps present a significant challenge to achieving good laminate properties, and a subsequent design optimization was performed to minimize them. Other challenges characteristic of in-situ and thermoplastic processing included print-through of tool release film and splices, which require industry solutions. Finally, a set of validation articles were fabricated by applying the appropriate processing settings. While the finished validation articles had limited defect areas, they were deemed acceptable for postlamination operations like bonding or induction welding of thermoplastic stiffeners.

References: [1] Cartensen T. A., Townsend W., and Goodworth A., "Development and Validation of a Virtual Prototype Airframe Design as Part of the Survivable Affordable Repairable Airframe Program," Proceedings of the 64th American Helicopter Society Forum, Montreal, Canada, April 29-May 1, 2008. [2] Salah L, Bahramshahi N, Ursenbach D, Merotte J, Mechanical Properties of Carbon-Fiber Thermoplastic Composites Manufactured by Laser Assisted Fiber Placement (LAFP). SAMPE Proceedings, Seattle, WA, May 2020. [3] Di Francesco M, Veldenz L, Dell'Anno G, Potter K. Heater power control for multi-material, variable speed Automated Fibre Placement. Compos Part Appl Sci Manuf 2017;101:408-21. [4] Stokes-Griffin CM, Compston P. A combined optical-thermal model for near-infrared laser heating of thermoplastic composites in an automated tape placement process. Compos Part Appl Sci Manuf 2015;75:104-15. [5] CartiƩ D. Automated fiber placement of thermoplastic materials: effects of process parameters on the mechanical properties of the laminate, Long Beach: 2018. [6] Merotte J, Green S, Padey D, Larroque G. PAEK composite prepreg: fast and efficient part manufacturing. JEC Compos Mag 2019. [7] Merotte J, Green S, Padey D, Larroque G. Unique Polyaryletherketone (PAEK) Prepreg Allows high versatility in Composite Parts Manufacturing using Automated Layup, Anaheim: 2019. [8] Merotte J, CartiƩ D, Henry K, Grohens Y, Hamlyn A. automated fiber placement of thermoplastic materials: pursuit of low porosity without the autoclave, Charlotte: 2019.

Conference: SAMPE 2020 | Virtual Series

Publication Date: 2020/06/01

SKU: TP20-0000000201

Pages: 12

Price: FREE

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