Gupta Vishal, Pandey Pulak M
Mechanical Engineering Department, Indian Institute of Technology Delhi, New Delhi, India.
Mechanical Engineering Department, Indian Institute of Technology Delhi, New Delhi, India.
Med Eng Phys. 2016 Nov;38(11):1330-1338. doi: 10.1016/j.medengphy.2016.08.012. Epub 2016 Sep 14.
Thermal necrosis is one of the major problems associated with the bone drilling process in orthopedic/trauma surgical operations. To overcome this problem a new bone drilling method has been introduced recently. Studies have been carried out with rotary ultrasonic drilling (RUD) on pig bones using diamond coated abrasive hollow tools. In the present work, influence of process parameters (rotational speed, feed rate, drill diameter and vibrational amplitude) on change in the temperature was studied using design of experiment technique i.e., response surface methodology (RSM) and data analysis was carried out using analysis of variance (ANOVA). Temperature was recorded and measured by using embedded thermocouple technique at a distance of 0.5mm, 1.0mm, 1.5mm and 2.0mm from the drill site. Statistical model was developed to predict the maximum temperature at the drill tool and bone interface. It was observed that temperature increased with increase in the rotational speed, feed rate and drill diameter and decreased with increase in the vibrational amplitude.
热坏死是骨科/创伤外科手术中与骨钻孔过程相关的主要问题之一。为克服这一问题，最近引入了一种新的骨钻孔方法。已使用金刚石涂层磨料空心工具对猪骨进行了旋转超声钻孔（RUD）研究。在本研究中，采用实验设计技术即响应面方法（RSM）研究了工艺参数（转速、进给速度、钻头直径和振动幅度）对温度变化的影响，并使用方差分析（ANOVA）进行了数据分析。通过嵌入式热电偶技术在距钻孔部位0.5mm、1.0mm、1.5mm和2.0mm处记录和测量温度。建立了统计模型以预测钻具与骨界面处的最高温度。观察到温度随转速、进给速度和钻头直径的增加而升高，随振动幅度的增加而降低。
