MODELING AND MULTI OBJECTIVE OPTIMIZATION OF EFFECTIVE PARAMETERS IN DRILLING CORTICAL BONE

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TAHMASBI VAHID; GHOREISHI MAJID; ZOLFAGHARI MOJTABA

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Journal: Modares Mechanical Engineering Year:2015 | Volume:15 | Issue:13 (SUPPLEMENT) Page(s): 113-119

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Title

MODELING AND MULTI OBJECTIVE OPTIMIZATION OF EFFECTIVE PARAMETERS IN DRILLING CORTICAL BONE

Author(s)

TAHMASBI VAHID | GHOREISHI MAJID | ZOLFAGHARI MOJTABA | Issue Writer Certificate

Keywords

BONEQ2

DRILLINGQ1

MACHININGQ2

OPTIMIZATIONQ2

RESPONSE SURFACE METHODOLOGYQ1

Abstract

BONE DRILLING is one of the common processes in orthopedic operations for therapy and maintaining different parts of a broken BONE with together. The most important possible problem during operation is the unwanted increase in DRILLING process temperature (higher than 47oC) which causes thermal necrosis or cell death and local burnt in BONE tissue. Applying higher forces to the BONE may lead to break or crack and consequently serious damage in the BONE. In this paper, a second order linear regression model is introduced to predict process temperature during BONE DRILLING as a function of DRILLING speed, feed rate and effective interactions. This model can specify the maximum speed of the surgery to stay within the acceptable range. Applying design of experiments, modeling and OPTIMIZATION of effective parameters using response surface method in BONE DRILLING, optimized DRILLING speed and feed rate were obtained to minimize force and surface roughness. Using multi objective OPTIMIZATION, this was done within the acceptable temperature range without tissue damage which can remarkably reduce the regeneration of the BONE cells and less therapy period. DRILLING speed and feed rate variations were considered in wide ranges of 500 to 2500 rpm and 40 to 60 mm/s, respectively. results showed that the minimum temperature increase and the best surface roughness are obtained when DRILLING speed and feed rate is minimum. Increasing these two parameters induced to the higher temperatures. At high DRILLING speeds, “temperature increase rate” decreases in the way that the response surface model represents horse saddle shape. Also, the minimum force imposed to BONE tissue is ascertained in lower feed rates and the most tool DRILLING speed. It is noted that the lowest damage to the BONE during orthopedic surgery occurs with DRILLING speed of 500 rpm and feed rate of 40 mm/min considering all aforementioned parameters.

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APA: Copy

TAHMASBI, VAHID, GHOREISHI, MAJID, & ZOLFAGHARI, MOJTABA. (2015). MODELING AND MULTI OBJECTIVE OPTIMIZATION OF EFFECTIVE PARAMETERS IN DRILLING CORTICAL BONE. MODARES MECHANICAL ENGINEERING, 15(13 (SUPPLEMENT)), 113-119. SID. https://sid.ir/paper/177906/en

Vancouver: Copy

TAHMASBI VAHID, GHOREISHI MAJID, ZOLFAGHARI MOJTABA. MODELING AND MULTI OBJECTIVE OPTIMIZATION OF EFFECTIVE PARAMETERS IN DRILLING CORTICAL BONE. MODARES MECHANICAL ENGINEERING[Internet]. 2015;15(13 (SUPPLEMENT)):113-119. Available from: https://sid.ir/paper/177906/en

IEEE: Copy

VAHID TAHMASBI, MAJID GHOREISHI, and MOJTABA ZOLFAGHARI, “MODELING AND MULTI OBJECTIVE OPTIMIZATION OF EFFECTIVE PARAMETERS IN DRILLING CORTICAL BONE,” MODARES MECHANICAL ENGINEERING, vol. 15, no. 13 (SUPPLEMENT), pp. 113–119, 2015, [Online]. Available: https://sid.ir/paper/177906/en

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