Abrasive waterjet hole trepanning of thick Kevlar-epoxy composites for ballistic applications - Experimental investigations and analysis using design of experiments methodology

被引：13

作者：

Siddiqui T.U. ^{[1
]}

Shukla M. ^{[2
,3
]}

机构：

[1] Department of Mechanical Engineering, Faculty of Engineering and Technology, M.J.P. Rohilkhand University, Bareilly, U.P

[2] Department of Mechanical Engineering Technology, University of Johannesburg, Johannesburg

[3] Motilal Nehru National Institute of Technology

来源：

International Journal of Machining and Machinability of Materials | 2011年 / 10卷 / 03期

关键词：

AWJ hole trepanning; Delamination; Kerf taper; Kevlar-epoxy composites; S/N ratio; Surface roughness; Taguchi method;

D O I：

10.1504/IJMMM.2011.042189

中图分类号：

学科分类号：

摘要：

Abrasive water jet (AWJ) is widely useful for producing cutouts/holes in difficult-to-cut materials. However, in AWJ hole trepanning, due to the jet trailback, the diameter of the hole tends to increase with an increase in workpiece thickness and striation marks are observed at the exit side. This results in an inferior quality hole due to poor dimensional tolerances, leading to assembly problems. Therefore, to obtain superior quality holes by AWJ trepanning, optimum selection of process parameters is absolutely critical. This paper embodies a Taguchi method based experimental investigation for finding the optimum parameter settings in AWJ hole trepanning of 6 mm thick Kevlar-epoxy composites, mainly used for anti-ballistic applications. Kerf taper and surface roughness has been chosen as the quality characteristics and four major operating parameters have been considered for experimentation. Visualisation studies using SEM and optical microscope have also been conducted for investigation of delamination induced during AWJ trepanning. Copyright © 2011 Inderscience Enterprises Ltd.

引用

页码：172 / 186

页数：14

共 27 条

[1]

Akkurt A., The effect of material type and plate thickness on drilling time of abrasive water jet drilling process, Materials and Design, 30, 3, pp. 810-815, (2009)

[2]

Azmir M.A., Ahsan A.K., Investigation on glass/epoxy composite surfaces machined by abrasive water jet machining, Journal of Materials Processing Technology, 198, 1-3, pp. 122-128, (2008)

[3]

Conner I., Hashish M., Ramulu M., Abrasive waterjet machining of aerospace structural sheet and thin plate materials, Proceedings of the 12th American Waterjet Conference, 1-G, pp. 1-19, (2003)

[4]

Davim J.P., Reis P., Antonio C.C., Drilling fiber reinforced plastics (FRPs) manufactured by hand lay-up: Influence of matrix (Viapal VUP 9731 and ATLAC 382-05, Journal of Materials Processing Technology, 155-156, pp. 1828-1833, (2004)

[5]

Davim J.P., Rubio J.C., Abrao A.M., A novel approach based on digital image analysis to evaluate the delamination factor after drilling composite laminates, Composites Science and Technology, 67, 9, pp. 1939-1945, (2007)

[6]

El-Domiaty A., Abd El-Hafez H.M., Shaker M.A., Drilling of glass sheets by abrasive jet machining, World Academy of Science, Engineering and Technology, 56, pp. 61-67, (2009)

[7]

Guo Z., Ramulu M., Investigation of displacement fields in an abrasive waterjet drilling process: Part 1. Experimental measurements, Experimental Mechanics, 41, 4, pp. 375-387, (2001)

[8]

Hascalik A., Caydas U., Gurun H., Effect of traverse speed on abrasive waterjet machining of Ti-6Al-4V alloy, Materials and Design, 28, 6, pp. 1953-1957, (2007)

[9]

Hashish M., On the modeling of surface waviness produced by abrasive-waterjets, Proceedings of 11th International Conference on Jet Cutting Technology, pp. 17-34, (1992)

[10]

Hocheng H., A failure analysis of water jet drilling in composite laminates, International Journal of Machine Tools and Manufacture, 30, 3, pp. 423-429, (1990)

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