Article: Experimental study on hole quality characteristics in abrasive waterjet machining of quartz cyanate ester polymeric composite Journal: International Journal of Machining and Machinability of Materials (IJMMM) 2024 Vol.26 No.2 pp.149 - 172 Abstract: Quartz polymeric fibre with cyanate ester resin make composite which finds significance in military applications due to its high performance and excellent properties. To obtain quality holes, abrasive waterjet machining (AWJM) is considered a promising non-conventional process because of its excellent machining characteristics. This study is aimed to machine hole on quartz composite using AWJM and analyse the effect of process parameters namely waterjet pressure (P), standoff distance (Sd) and abrasive flow rate (ma). Hole quality characteristics namely delamination factor, diameter, cylindricity and surface roughness are considered. Vacuum assisted resin transfer moulding (VARTM) process was adopted for manufacturing of the laminate. Full factorial design was considered and experiments were carried out. Results showed that the maximum influence on delamination, diameter, cylindricity is by waterjet pressure and its corresponding contributions are 36.98%, 80.19%, 59.29% respectively. Similarly, the major influence on surface roughness is standoff distance and its contribution is 39.08%. Further, optimal solution was obtained and validated with regression equations with a maximum error of 9.11%. Inderscience Publishers - linking academia, business and industry through research

Title: Experimental study on hole quality characteristics in abrasive waterjet machining of quartz cyanate ester polymeric composite

Authors: T. Ramalingam; N. Kishore Nath; N. Selvaraj

Addresses: Advanced Systems Laboratory, DRDO, Hyderabad, Telangana, 500058, India ' Advanced Systems Laboratory, DRDO, Hyderabad, Telangana, 500058, India ' Department of Mechanical Engineering, National Institute of Technology, Warangal, 506004, India

Abstract: Quartz polymeric fibre with cyanate ester resin make composite which finds significance in military applications due to its high performance and excellent properties. To obtain quality holes, abrasive waterjet machining (AWJM) is considered a promising non-conventional process because of its excellent machining characteristics. This study is aimed to machine hole on quartz composite using AWJM and analyse the effect of process parameters namely waterjet pressure (P), standoff distance (S_d) and abrasive flow rate (m_a). Hole quality characteristics namely delamination factor, diameter, cylindricity and surface roughness are considered. Vacuum assisted resin transfer moulding (VARTM) process was adopted for manufacturing of the laminate. Full factorial design was considered and experiments were carried out. Results showed that the maximum influence on delamination, diameter, cylindricity is by waterjet pressure and its corresponding contributions are 36.98%, 80.19%, 59.29% respectively. Similarly, the major influence on surface roughness is standoff distance and its contribution is 39.08%. Further, optimal solution was obtained and validated with regression equations with a maximum error of 9.11%.

Keywords: quartz polymeric composite; abrasive waterjet; resin transfer moulding; hole quality; regression modelling; optimisation; delamination.

DOI: 10.1504/IJMMM.2024.139059

International Journal of Machining and Machinability of Materials, 2024 Vol.26 No.2, pp.149 - 172

Received: 25 Apr 2023
Accepted: 09 Oct 2023
Published online: 10 Jun 2024 *

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Title: Experimental study on hole quality characteristics in abrasive waterjet machining of quartz cyanate ester polymeric composite

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