Original scientific paper

https://doi.org/10.17559/TV-20181228185947

Experimental Investigation of Delamination Formed by Bone Drilling

Serdar Koluaçik orcid.org/0000-0002-1450-4029 ; Department of Orthopedics and Traumatology, Malatya Training and Research Hospital, 44090 Malatya, Turkey
Murat Can ; Department of Orthopedics and Traumatology, Malatya Training and Research Hospital, 44090 Malatya, Turkey
Erkan Bahçe orcid.org/0000-0001-5389-5571 ; Department of Mechanical Engineering, Inonu University, 44210 Malatya, Turkey

Abstract

Bone drilling is a common method for fixing implants used in bone fractures. Because of the fibre-reinforced composite structure of bone, parameters such as
feed rate, spindle speed and drill type affect the hole surface quality. After drilling, the quality of the bore surface, burr formation and delamination at the hole entrance and
exit affect the ability of the screw to cause implant failure and fusion problems of the fracture. For this reason, it is very important to conduct drilling with optimum speed and
feedrate values. In this study, the effects of processing parameters on hole surface quality and delamination were studied experimentally. In the experiment, bovine bone,
which has similar structural properties to human bone, was used. The hole surface quality and delamination formed at the exit of the hole were examined for three different
feed rates and spindle speeds. As a result of the experiments, it was seen that the feed rate had more effect on both delamination and hole surface quality than the spindle
speed. It was also determined that the cortical part of the bone and the cancellous part of the bone affected the production of heat and drill wear differently.

Keywords

bone drilling; delamination; surface quality

Hrčak ID:

239077

URI

https://hrcak.srce.hr/239077

Publication date:

14.6.2020.

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