دانلود مقاله ISI انگلیسی شماره 52698
عنوان فارسی مقاله

تعیین ثابت قانون پاریس با یک تکنیک مهندسی معکوس

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
52698 2009 8 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Determination of Paris law constants with a reverse engineering technique
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Engineering Failure Analysis, Volume 16, Issue 2, March 2009, Pages 631–638

کلمات کلیدی
ثابت قانون پاریس - تکامل ترک شکل - مهندسی معکوس
پیش نمایش مقاله
پیش نمایش مقاله تعیین ثابت قانون پاریس با یک تکنیک مهندسی معکوس

چکیده انگلیسی

Paris law constants are commonly obtained with a well established procedure based on standard specimens, notched and pre-cracked. Pre-cracking produces through cracks with stable shapes, nearly straight, similar during all propagation. However, in several situations specimens with corner and surface cracks are recommended. In these cases cracks having significant propagation will continuously modify their shape, beginning with corner or surface geometries and subsequently transforming into through cracks, resulting into a transition region with significant crack shape modification. The aim of this paper is to determine Paris law constants from the analysis of crack shapes on the surface of fracture, in regions of intense shape modification. A double-U specimen of a new generation nickel base superalloy was used to obtain experimental crack shapes within transitory region as well as the number of load cycles between them. An automatic crack growth technique based on the finite element method (FEM) was employed to obtain fatigue constants from crack propagation data.

خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.