engleski

Medical Drill Wear Classification Using Servomotor Drive Signals and Neural Networks

Medical drills are subject to intensive wear due to the influence of different mechanical, chemical and thermal factors characteristic for drilling and sterilization process. Wear progress increases friction in the cutting zone, which consequently leads to higher temperatures and cutting forces, i.e., possible thermal and mechanical damages of the bone tissue. Therefore, the presented study aimed to analyze the possibility of drill wear monitoring using electric servomotor drive signals and neural network algorithm. Experimental work has been performed with adequately designed testbed machining system and using prepared bovine bone samples. Drill wear features were extracted from time and frequency domain of the process signals, and then analyzed separately and in combinations.

medical drill; wear; thermal osteonecrosis; neural networks; modeling

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