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Effects of Waterjet Treatment on Surface Integrity of Metals and its Optimization

  • The study addresses the effect of multiple jet passes and other parameters namely feedrate, water pressure and standoff distance in waterjet peening of metallic surfaces. An analysis of surface integrity was used to evaluate the performance of different parameters in the process. An increase in the number of jet passes and pressure leads to a higher roughness and more erosion and also a higher hardness. In contrast, the feedrate shows a reverse effect on those surface characteristics. There exists a specific value of standoff distance that results in the maximum surface roughness, erosion as well as hardness. Analysis of the surface microstructure gave a good insight into the mechanism material removal process involving initial and evolved damage. Also, the waterjet peening process was optimized based on the design of experiment approach. The developed empirical models had shown reasonable correlations between the measured and predicted responses. A proper selection of waterjet peening parameters can be formulated to be used in practical works.
URN (permanent link):urn:nbn:de:hbz:386-kluedo-38543
Serie (Series number):KIMA Schriftenreihe (11)
Advisor:Christian Schindler
Document Type:Doctoral Thesis
Language of publication:English
Publication Date:2014/08/18
Year of Publication:2014
Publishing Institute:Technische Universität Kaiserslautern
Granting Institute:Technische Universität Kaiserslautern
Acceptance Date of the Thesis:2013/11/12
Date of the Publication (Server):2014/08/19
Number of page:XIII, 159
Faculties / Organisational entities:Fachbereich Maschinenbau und Verfahrenstechnik
DDC-Cassification:6 Technik, Medizin, angewandte Wissenschaften / 620 Ingenieurwissenschaften und Maschinenbau
Licence (German):Standard gemäß KLUEDO-Leitlinien vom 10.09.2012