An erosion model for abrasive waterjet milling of polycrystalline ceramics |
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| Affiliation: | 1. University of Nottingham Ningbo, China;2. University of Nottingham, Machining and Condition Monitoring Research Group, University Park, Nottingham, NG7 2RD United Kingdom;1. Arts et Metiers ParisTech, LaBoMaP, Rue Porte de Paris, 71250 Cluny, France;2. R&D Material and Technology Development Seco Tools AB, SE-73782 Fagersta, Sweden;3. Safran Tech, Research and Technology Center, 78772 Magny-Les-Hameaux, France;4. Karlsruhe Institute of Technology, Institute for Applied Materials (IAM-WK), Kaiserstraße 12, 76131 Karlsruhe, Germany;5. IDMEC, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais N1, 1049-001, Lisboa, Portugal;1. State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, PR China;2. Hitachi Zosen Collaborative Research Division, Office of Society-Academia Collaboration for Innovation, Kyoto University, Kyoto 615-8520, Japan;3. Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan |
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| Abstract: | A modeling study was conducted on the abrasive waterjet milling (AWJM) of polycrystalline ceramics. The optimum jet incidence angle was determined from experiments. A conclusion from previous studies, which indicated intergranular cracking to be the dominant erosion mechanism, was applied. A hypothesis that links the intergranular cracking to impact-induced stress waves was used. An existing expression for the input stress wave energy was adopted in a crack network model to evaluate material removal. A new material constant “AWJM Erosion Resistance” was defined. The derived erosion model is verified with single-pass AWJM experiments. |
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