ABSTRACT

This paper aims to examine the influence of nanoclay as secondary reinforcement in carbon epoxy (CFRP) composite on the abrasive water jet machining (AWJM) response for the process parameters, namely, jet pressure (96 and 304 MPa), traverse rate (50, 100, and 150 mm/min), and nanoclay (0.00, 1.25, and 2.50 wt%). The most dominating parameters for AWJM response such as average surface roughness (Ra) characteristics, kerf taper (KT) formation, and material removal rate (MRR) of CFRP plates were investigated by adopting the Taguchi-based statistical method. ANOVA was utilized to obtain the influence of input factors on the process response. Traverse rate was attained as the most considerable factor for all the AWJM response. CFRP embedded with nanoclay showed relatively lower KT formation, Ra, and MRR than the CFRP laminate without nanoclay. Traverse rate with 150 mm/min showed higher Ra, KT formation and MRR compared to 50 and 100 mm/min. Jet pressure with 304 MPa showed lower Ra and KT formation while provided better MRR. The microstructure analysis of the machined surface was illustrated applying FESEM.

摘要

本文旨在研究纳米粘土作为碳环氧树脂 (CFRP) 复合材料中的二次增强材料对磨料水射流加工 (AWJM) 响应的工艺参数的影响，即射流压力 (96 和 304 MPa)、横移速率 (50, 100 和 150 毫米/分钟）和纳米粘土（0.00、1.25 和 2.50 重量％）。采用基于田口的统计方法研究了 AWJM 响应的最主要参数，例如平均表面粗糙度 (Ra) 特性、切口锥度 (KT) 形成和 CFRP 板的材料去除率 (MRR)。方差分析用于获得输入因素对过程响应的影响。横移率是所有 AWJM 响应中最重要的因素。与不含纳米粘土的 CFRP 层压板相比，嵌入纳米粘土的 CFRP 显示出相对较低的 KT 形成、Ra 和 MRR。与 50 和 100 毫米/分钟相比，150 毫米/分钟的横移速度显示出更高的 Ra、KT 形成和 MRR。304 MPa 的喷射压力显示出较低的 Ra 和 KT 形成，同时提供更好的 MRR。加工表面的微观结构分析说明了应用 FESEM。