<p>Carbon fiber-reinforced thermoplastic textile composite exhibits various advantages that make them appealing for engineering applications. Compared to conventional thermoset composites, they possess recyclability, reprocessibility, and improved toughness. Milling produces slots and pockets, which are vital for the assembly and functionality. The reinforcement of carbon into a polymer matrix produces a material with uneven physical, mechanical, and thermal properties. The abrasive nature of carbon fiber and heat-sensitive matrix results in poor machinability. This research paper explores the effect of input parameters on the machinability factors. Input parameters (feed rate, cutting depth, and spindle speed) and the responses (machining temperature, machining force, delamination factor, and surface roughness) were examined to produce slots of improved quality. The feed rate most impacts the machining temperature, machining force, delamination factor, and surface roughness, accounting for 57.65%, 62.79%, 63.45%, and 48.44% contribution, respectively. Machining temperature, machining force, delamination factor, and surface roughness were least affected by spindle speed, with 13.14%, 10.55%, 13.51%, and 19.48%, respectively. During thermal analysis of the machining zone, the maximum temperature recorded was 107.28 ℃. Fiber fracture, cavity, and matrix smearing were seen on the machined surface in the optical microscopic images. This study will provide a way to regulate the machining quality and optimize the process parameters during the milling of composite materials.</p>

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Machinability study on carbon fiber-reinforced polypropylene textile composite

  • Shashi Ranjan Pathak,
  • Anup Malik,
  • Harlal Singh Mali

摘要

Carbon fiber-reinforced thermoplastic textile composite exhibits various advantages that make them appealing for engineering applications. Compared to conventional thermoset composites, they possess recyclability, reprocessibility, and improved toughness. Milling produces slots and pockets, which are vital for the assembly and functionality. The reinforcement of carbon into a polymer matrix produces a material with uneven physical, mechanical, and thermal properties. The abrasive nature of carbon fiber and heat-sensitive matrix results in poor machinability. This research paper explores the effect of input parameters on the machinability factors. Input parameters (feed rate, cutting depth, and spindle speed) and the responses (machining temperature, machining force, delamination factor, and surface roughness) were examined to produce slots of improved quality. The feed rate most impacts the machining temperature, machining force, delamination factor, and surface roughness, accounting for 57.65%, 62.79%, 63.45%, and 48.44% contribution, respectively. Machining temperature, machining force, delamination factor, and surface roughness were least affected by spindle speed, with 13.14%, 10.55%, 13.51%, and 19.48%, respectively. During thermal analysis of the machining zone, the maximum temperature recorded was 107.28 ℃. Fiber fracture, cavity, and matrix smearing were seen on the machined surface in the optical microscopic images. This study will provide a way to regulate the machining quality and optimize the process parameters during the milling of composite materials.