ACOUSTIC-EMISSION SENSING AS A TOOL FOR UNDERSTANDING THE MECHANISMS OF ABRASIVE WATER-JET DRILLING OF DIFFICULT-TO-MACHINE MATERIALS

Authors
KOVACEVIC R KWAK HS MOHAN RS
Citation
R. Kovacevic et al., ACOUSTIC-EMISSION SENSING AS A TOOL FOR UNDERSTANDING THE MECHANISMS OF ABRASIVE WATER-JET DRILLING OF DIFFICULT-TO-MACHINE MATERIALS, Proceedings of the Institution of Mechanical Engineers. Part B, Journal of engineering manufacture, 212(1), 1998, pp. 45-58
Citations number
19
Categorie Soggetti
Engineering, Manufacturing","Engineering, Mechanical
Journal title
Proceedings of the Institution of Mechanical Engineers. Part B, Journal of engineering manufacture → ACNP
ISSN journal
09544054
Volume
212
Issue
1
Year of publication
1998
Pages
45 - 58
Database
ISI
SICI code
0954-4054(1998)212:1<45:ASAATF>2.0.ZU;2-H
Abstract
For drilling difficult-to-machine materials, abrasive water jet (AWJ) drilling provides several advantages not offered by other machining me thods, such as the capability to achieve higher depth-diameter ratios, the absence of a heat-affected zone, and no thermal distortion. An ac oustic emission (AE) sensing technique is used to study the material r emoval mechanisms involved in the AWJ drilling process. The feasibilit y of using r.m.s. acoustic emission (AE(RMS)) to monitor the AWJ drill ing depth on-line is also investigated. Stochastic modelling of the ti me domain AE signal provides more insight into the physics of the proc ess.