Close physical properties with human bone make sintered hydroxyapatite (HAP) a suitable bioceramic material for hard tissue replacement. When being used as implant devices in the human body, the HAP bioceramic needs to be machined to the closest possible configuration with minimal surface roughness. This study investigates the machinability of a newly developed, fully dense nanocrystalline hydroxyapatite (nHAP) bioceramic in turning operations. Efforts are focused on the effects of various machining conditions on surface integrity. Surface roughness is measured using a surface profilometer and the machined surface is observed using a scanning electron microscope (SEM). Chip morphology and tool wear are examined using an optical microscope. Cutting forces are measured using a three-component dynamometer. Based on the experimental results, it is found that the nHAP bioceramic is not very difficult to machine because the tool wear and cutting forces are small. However, the big challenge is how to obtain a smooth and strong surface without chipping or fracturing the material. Two machining strategies are proposed for improving the surface integrity of the sintered nHAP bioceramic in the future.
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ASME 2011 International Manufacturing Science and Engineering Conference
June 13–17, 2011
Corvallis, Oregon, USA
Conference Sponsors:
- Manufacturing Engineering Division
ISBN:
978-0-7918-4430-4
PROCEEDINGS PAPER
An Investigation Into Machinability of Sintered Nanocrystalline Hydroxyapatite Available to Purchase
Sanket S. Kulkarni,
Sanket S. Kulkarni
Kansas State University, Manhattan, KS
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Mark Haynes,
Mark Haynes
Kansas State University, Manhattan, KS
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Lorraine Reimers,
Lorraine Reimers
Kansas State University, Manhattan, KS
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Kaushik R. Achanta,
Kaushik R. Achanta
Kansas State University, Manhattan, KS
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Shuting Lei
Shuting Lei
Kansas State University, Manhattan, KS
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Sanket S. Kulkarni
Kansas State University, Manhattan, KS
Mark Haynes
Kansas State University, Manhattan, KS
Lorraine Reimers
Kansas State University, Manhattan, KS
Kaushik R. Achanta
Kansas State University, Manhattan, KS
Shuting Lei
Kansas State University, Manhattan, KS
Paper No:
MSEC2011-50247, pp. 73-79; 7 pages
Published Online:
September 14, 2011
Citation
Kulkarni, SS, Haynes, M, Reimers, L, Achanta, KR, & Lei, S. "An Investigation Into Machinability of Sintered Nanocrystalline Hydroxyapatite." Proceedings of the ASME 2011 International Manufacturing Science and Engineering Conference. ASME 2011 International Manufacturing Science and Engineering Conference, Volume 1. Corvallis, Oregon, USA. June 13–17, 2011. pp. 73-79. ASME. https://doi.org/10.1115/MSEC2011-50247
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