Keyword search (4,163 papers available)

"Fiber placement" Keyword-tagged Publications:

Title Authors PubMed ID
1 Adaptive finite-time synchronized control of multi-robotic fiber placement system with model uncertainties and disturbances Zhang R; Wang Y; Xie W; Li P; Tan H; Jiang Y; 40461302
ENCS
2 Distributed adaptive sliding mode control with deep recurrent neural network for cooperative robotic system in automated fiber placement Zhu N; Xie WF; 40436653
ENCS
3 In-situ consolidation of thermoplastic composites by automated fiber placement: Characterization of defects Fereidouni M; Hoa SV; 39895653
ENCS
4 Steering of carbon fiber/PEEK tapes using Hot Gas Torch-assisted automated fiber placement Rajasekaran A; Shadmehri F; 36974323
ENCS

 

Title:Steering of carbon fiber/PEEK tapes using Hot Gas Torch-assisted automated fiber placement
Authors:Rajasekaran AShadmehri F
Link:pubmed.ncbi.nlm.nih.gov/36974323/
DOI:10.1177/08927057211067962
Publication:Journal of thermoplastic composite materials
Keywords:Automated fiber placementcarbon fiber/polyether ether ketonefiber steeringlap shear testthermoplastic compositevariable angle tow
PMID:36974323 Category: Date Added:2023-03-28
Dept Affiliation: ENCS
1 Department of Mechanical, Industrial and Aerospace Engineering, Concordia University, Montreal, Quebec, Canada.
2 Research Center for High Performance Polymer and Composite Systems (CREPREC), Montreal, Quebec, Canada.

Description:

In-situ manufacturing of thermoplastic composites using Hot Gas Torch (HGT)-assisted Automated Fiber Placement (AFP) has the potential to produce laminates in an efficient manner by avoiding a secondary process, like autoclave consolidation. One of the advantages of AFP technique is its capability to steer fiber path and to manufacture Variable Angle Tow (VAT) laminates which have shown to have improved mechanical performance. This study investigates the process parameters that affect steering of carbon fiber reinforced thermoplastic tapes (AS4/polyether ether ketone) using an HGT-assisted AFP machine. The effect of the steering radius, laydown speed, number of repasses, and substrate angle on the geometry and bond strength of steered tape was investigated through observation and testing. A modified lap shear test was devised and used to study the bond strength between the steered tape and the substrate and the results were compared with autoclave treated samples which served as a reference. It was found that with a decrease in the steering radius of the tape, there was a decrease in the tape width and an increase in the tape thickness. A significant reduction in the steering-induced defects was observed at higher laydown speeds where the defects were intermittent unlike in the case of lower laydown speeds. Performing a repass over the steered tape smoothed some of the tape defects caused by steering. Furthermore, the lap shear strengths of the steered tapes were found to be functions of laydown speed and substrate angle.




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