A NEW TECHNIQUE IN THE APPLICATION OF HIGH-SPEED WATER JET
The energy of the high-speed water jet is usually utilized for cleaning, penetrating, fracturing or cutting of different materials. This study introduces a new application, i.e. the modification of surfaces through pressure-induced plastic flow. The experimental parameters, such as stand-off distance, feed-rate and pressure, can be controlled, so that no destructive effects can be detected on the surface of treated materials. Under these controlled conditions, there is a marked improvement in the mechanical properties, e.g. surface hardness, yield strength and fatigue strength of mild steel used as a target material. The method is similar in many ways to the well-known shot peening and abrasive cleaning methods. A comparative study, using annealed aluminum as a model material, was carried out between shot peening and water blasting. Using previously determined water jetting parameters, the improvement in fatigue strength attainable from water blasting is not as good as that for shot peening. The reasons for this and the interpretation of X-ray back reflection data are discussed. Order from: BSRA as No. 48,045.
- Proceedings of the Third International Symposium on Jet Cutting Technology in Chicago, May 11-13, 1976.
British Hydromechanics Research AssociationCranfield MK43 0AJ, Bedfordshire, England
- Beutin, E F
- Erdmann-Jesnitzer, F
- Publication Date: 1976
- Features: References;
- Pagination: 8 p.
- TRT Terms: Cleaning; Fatigue strength; Materials selection; Mechanical properties; Plasticity; Waterjets
- Old TRIS Terms: Materials evaluation; Waterjet cleaning
- Subject Areas: Maintenance and Preservation; Marine Transportation; Vehicles and Equipment;
- Accession Number: 00174221
- Record Type: Publication
- Source Agency: British Ship Research Association
- Report/Paper Numbers: Paper F2 Proceeding
- Files: TRIS
- Created Date: May 31 1978 12:00AM