Volume 48, No 3, 2026, Pages 577-594
Download full text in PDFAssessment of Two Body Abrasive Wear Performance of PA66 Composites Under Multi-Pass Conditions Using Taguchi-GRA-PCA Optimization
Authors:
S.M. Vinu Kumar 
,
E. Sakthivelmurugan ,
A.T. Ravichandran ,
J.P. Rishi ,
B. Harshavardhan ,
P. Balamurugan
DOI: 10.24874/ti.2259.06.26.08
Received: 15 June 2026
Revised: 17 July 2026
Accepted: 10 August 2026
Published: 15 September 2026
Abstract:
This study systematically explores the two-body abrasive wear (2BAW) performance of neat Polyamides66 (PA66), short glass fiber reinforced PA66 (PA66/SGF) and talc filled short glass fiber reinforced hybrid composites (PA66/SGF/T). 2BAW test was performed using pin on disc machine as per ASTM G99 for different operating conditions against silicon carbide water proof emery paper. Experimental layouts were designed based on the Taguchi’s L9 orthogonal arrays for the input parameters such as sliding distance (75, 100, and 125 m), applied load (5, 10, and 15 N) and reinforcement type (PA66, PA66/SGF, and PA66/SGF/T). Grey relational analysis (GRA) and principal component analysis (PCA) were integrated with Taguchi to analyze the effect of input factors on the multiple responses namely, coefficient of friction (COF), specific wear rate (SWR) and hardness of the composites. Analysis of variance (ANOVA) was employed to identify the significant factors affects the abrasive wear characteristics of the PA66 composites. The results indicated that addition of SGF and talc fillers into the PA66 matrix increased the wear resistance. Higher wear resistance to the 2BAW under multipass condition was exhibited by the PA66/SGF/T hybrid composites. Worn surfaces of the PA66 composite specimens were examined using field emission scanning electron microscopy (FESEM) photographs. The observations revealed that transition of wear mechanism from mild to severe wear with increasing sliding distance and applied load, mainly characterized by ploughing, matrix tearing, shallow grooves and fiber breakages. Taguchi-GRA-PCA method suggested that 2BAW performance of the PA66 composite was mainly contributed by sliding distance followed by reinforcement type and applied load.
Keywords:
Abrasive wear, PA66 composites, Short glass fiber, Multi-response optimizatio, Principal component analysis
