کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7208792 | 1469107 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation of a fatigue failure in a stainless steel femoral plate
ترجمه فارسی عنوان
بررسی یک خستگی خفیف در یک صفحه فومورال فولاد ضد زنگ
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کلمات کلیدی
صفحه فمورال، تجزیه و تحلیل شکست ایمپلنت ارتوپدی، فولاد ضد زنگ، خستگی،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی پزشکی
چکیده انگلیسی
Surgical implants are exposed to severe working conditions and therefore a wide range of failure mechanisms may occur, including fatigue, corrosion, wear, fretting and combinations of them. The mechanical failures of metallic implants may also be influenced by several other factors, including the design, material, manufacturing, installation, postoperative complications and misuse. An 83-year-old patient suffered an oblique femoral shaft fracture due to a fall at home. A stainless steel locking compression plate (LCP) employed in the fracture reduction failed after four months and was sent back to the producer. A second LCP of the same type was implanted and also failed after six months. A failure analysis of the second femoral LCP is performed in this paper. The results demonstrate that poor material quality was decisive to the failure. The chemical analysis revealed a high P content in the steel, which is not in accordance to the standards. A combination of factors lead to LCP fracture and these include: brittle crack initiation due to phosphorus, segregation at grain boundaries, crack propagation due to cyclic loading and final fast fracture favored by the loss of ductility due to cold work.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Mechanical Behavior of Biomedical Materials - Volume 38, October 2014, Pages 52-58
Journal: Journal of the Mechanical Behavior of Biomedical Materials - Volume 38, October 2014, Pages 52-58
نویسندگان
JB. Marcomini, C.A.R.P. Baptista, J.P. Pascon, R.L. Teixeira, F.P. Reis,