Preprint Article Version 1 This version is not peer-reviewed

Influence of Abrasive Waterjet Parameters on the Cutting and Drilling of CFRP/UNS A97075 and UNS A97075/CFRP Stacks

Version 1 : Received: 30 November 2018 / Approved: 3 December 2018 / Online: 3 December 2018 (05:01:01 CET)

A peer-reviewed article of this Preprint also exists.

Ruiz-Garcia, R.; Mayuet Ares, P.F.; Vazquez-Martinez, J.M.; Salguero Gómez, J. Influence of Abrasive Waterjet Parameters on the Cutting and Drilling of CFRP/UNS A97075 and UNS A97075/CFRP Stacks. Materials 2019, 12, 107. Ruiz-Garcia, R.; Mayuet Ares, P.F.; Vazquez-Martinez, J.M.; Salguero Gómez, J. Influence of Abrasive Waterjet Parameters on the Cutting and Drilling of CFRP/UNS A97075 and UNS A97075/CFRP Stacks. Materials 2019, 12, 107.

Journal reference: Materials 2018, 12, 107
DOI: 10.3390/ma12010107

Abstract

The incorporation of plastic matrix composite materials into structural elements of the aeronautical industry requires contour machining and drilling processes along with metallic materials prior to final assembly operations. These operations are usually performed using conventional techniques, but they present problems derived from the nature of each material that avoid implementing One Shot Drilling strategies that work separately. In this work, the study focuses on the evaluation of the feasibility of Abrasive Waterjet Machining (AWJM) as a substitute for conventional drilling for stacks formed of Carbon Fiber Reinforced Plastic (CFRP) and aluminum alloy UNS A97050 through the study of the influence of abrasive mass flow rate, traverse feed rate and water pressure in straight cuts and drills. For the evaluation of the straight cuts, Stereoscopic Optical Microscopy (SOM) and Scanning Electron Microscopy (SEM) techniques are used inspection techniques have been used. In addition, the kerf taper through the proposal of a new method and the surface quality in different cutting regions have been evaluated. For the study of holes, the macrogeometric deviations of roundness, cylindricity and straightness have been evaluated. Thus, this experimental procedure reveals the conditions that minimize deviations, defects, and damage in straight cuts and holes obtained by AWJM.

Subject Areas

AWJM; stack; CFRP; aluminium UNS A97050; SOM/SEM; kerf taper; surface quality; macrogeometric deviations

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