مهندسی ساخت و تولید ایران

مهندسی ساخت و تولید ایران

بررسی دما و کیفیت سطح در ماشین‌کاری متعامد استخوان کورتیکال با استفاده از روش سطح پاسخ و تحلیل حساسیت

نوع مقاله : مقاله پژوهشی

نویسندگان
گروه مهندسی مکانیک، دانشگاه صنعتی اراک، اراک، ایران
چکیده
دمای برش و کیفیت سطح ماشین‌کاری شده دو عامل تأثیرگذار در ماشین‌کاری استخوان حین جراحی‌های ارتوپدی مانند شکستگی، تعویض مفصل و دندان‌پزشکی است. بالا رفتن دمای فرایند از مقداری مشخص، نکروز حرارتی (مرگ سلولی) و در نتیجه آسیب‌دیدن بافت را به همراه دارد. از سوی دیگر عدم کیفیت سطح مطلوب منجر به نفوذ نامتقارن استخوان درون مفصل مصنوعی و شل ‌شدن آن می‌شود. برش متعامد به‌عنوان پایه دیگر فرایندهای ماشین‌کاری در این پژوهش مورد استفاده واقع شده است. تخمین عملکرد دما و کیفیت سطح در ماشین‌کاری متعامد استخوان برحسب سرعت خطی ابزار، عمق برش و زاویه براده استخراج می‌شود. همچنین بهینه‌سازی پاسخ فرایند و برهم‌کنش‌های مؤثر بر آن بررسی می‌شود. جهت بررسی تأثیر کمی نتایج از روش تحلیل حساسیت سوبل استفاده شده است. نتایج نشان می‌دهد حداقل دمای بهینه، با سرعت ابزار 140 میلی‌متر بر ثانیه، زاویه براده 9.7 درجه و عمق برش 0.1 میلی‌متر و برش در راستای بافت استخوان و مقدار کمینه دما برابر با 17.9 درجه سانتی‎گراد حاصل می‌شود. حداقل زبری سطح بهینه با سرعت ابزار 275 میلی‌متر بر ثانیه، زاویه براده 9.6 درجه و عمق برش 0.1 میلی‌متر و برش در راستای بافت استخوان و برابر با 1.07 میکرومتر حاصل می‌شود. نتایج حاصله می‌تواند در بررسی و تحلیل دیگر فرایندهای ماشین‌کاری در ارتوپدی (مانند سوراخکاری و فرزکاری) مورد استفاده واقع شود.
کلیدواژه‌ها

عنوان مقاله English

Temperature and surface quality investigation in orthogonal machining of cortical bone using response surface method and sensitivity analysis

نویسندگان English

Mahdi Qasemi
Vahid Tahmasbi
Parham Karkhane
Mohammad Hossein Eslami
Mechanical Engineering Department, Arak University of Technology, Arak, Iran
چکیده English

The cutting temperature and surface quality of machined bone are two significant factors influencing bone machining during orthopedic surgeries such as fracture repair, joint replacement, and dental procedures. An increase in process temperature beyond a certain threshold can lead to thermal necrosis (cell death) and, consequently, tissue damage. Conversely, inadequate surface quality can result in asymmetric bone penetration into the prosthetic joint, leading to loosening of the implant. Orthogonal cutting is utilized as a foundational method for other machining processes in this study. The estimation of temperature performance and surface quality in the orthogonal machining of bone is derived based on tool linear velocity, cutting depth, and rake angle. Furthermore, the optimization of process responses and the interactions affecting them are examined. To quantitatively assess the impact of the results, the Sobol sensitivity analysis method is employed. The findings indicate that the minimum optimal temperature occurs at a tool speed of 140 mm/s, a rake angle of 9.7 degrees, and a cutting depth of 0.1 mm, with cutting aligned to the bone structure yielding a minimum temperature of 17.9 degrees Celsius. The minimum optimal surface roughness is achieved at a tool speed of 275 mm/s, a rake angle of 9.6 degrees, and a cutting depth of 0.1 mm, also aligned with the bone structure, resulting in a surface roughness of 1.07 micrometers. The obtained results can be applied in the investigation and analysis of other machining processes in orthopedics (such as drilling and milling).

کلیدواژه‌ها English

Orthogonal Machining
Bone
Temperature
Surface Roughness
Response Surface Method
Sensitivity Analysis
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