This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Abrasive-Waterjet Machining of Ceramic-Coated Materials
Annotation ability available
Sector:
Language:
English
Abstract
This paper addresses an experimental investigation on the feasibility of using abrasive-waterjets (AWJs) for the precision drilling of small-diameter holes in advanced aircraft engine components. These components are sprayed with ceramic thermal barrier coating (TBC), and the required holes are typically 0.025 inch in diameter with a drilling angle of 25°. The parameters of the AWJ were varied to study their effects on both quantitative and qualitative hole drilling parameters. The unique techniques of assisting the abrasive feed process, ramping the waterjet pressure during drilling, and varying the jet dwell time after piercing were effectively implemented to control hole quality and size. The results of the experiments indicate the accuracy and repeatability of the AWJ technique in meeting the air flow and hole size requirements. Production parts were drilled for prototype engine testing.
Recommended Content
Authors
Citation
Hashish, M. and Whalen, J., "Abrasive-Waterjet Machining of Ceramic-Coated Materials," SAE Technical Paper 912231, 1991, https://doi.org/10.4271/912231.Also In
References
- Boldt, J. A. Chanani, J. P. 1987 “Solid Tool Machining and Drilling,” Engineered Materials Handbook Vol. 1 Composites Reinhart, J.R. ASM International 667 672
- Crossland, B. Logan, J. G. 1972 “Development of Equipment for Jet Cutting,” First Int. Symp. on Jet Cutting Technology BHRA Coventry, England C1 C12
- Hashish, M. 1982 “Steel Cutting with Abrasive-Waterjets,” Proc. 6th Int. Symp. on Jet Cutting Technology BHRA England April 465 487
- Hashish, M. 1984 “Cutting with Abrasive-Waterjets,” Mech. Eng. March 60 66
- Hashish, M. 1988a “Turning, Milling and Drilling with Abrasive-Waterjets,” Proc. 9th Int. Symp. on Jet Cutting Technology BHRA Sendi, Japan October 113 131
- Hashish, M. 1988b “Visualization of the Abrasive-Waterjet Cutting Process,” J. Experimental Mech. June 159 169
- Hashish, M. Craigen, S. 1990 “Method and Apparatus for Drilling Small-Diameter Holes in Fragile Material with a High-Velocity Liquid Jet,” September