کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1660099 1008396 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the thermally induced cracking of a segmented coating deposited on the outer surface of a hollow cylinder
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
On the thermally induced cracking of a segmented coating deposited on the outer surface of a hollow cylinder
چکیده انگلیسی

In this work, the thermally induced cracking behavior of a segmented coating has been investigated. The geometry under consideration is a hollow cylinder with a segmented coating deposited onto its outer surface. The segmentation cracks are modeled as a periodic array of axial edge cracks. The finite element method is utilized to obtain the solution of the multiple crack problem and the Thermal Stress Intensity Factors (TSIFs) are calculated. Based on dimensional analysis, the main parameters affecting TSIFs are identified. It has been found that the TSIF is a monotonically increasing function of segmentation crack spacing. This result confirms that a segmented coating exhibits much higher thermal shock resistance than an intact counterpart, if only the segmentation crack spacing is narrow enough. The dependence of TSIF on some other parameters, such as normalized time, segmentation crack depth, convection severity as well as material constants, has also been discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 203, Issue 9, 25 January 2009, Pages 1114–1120
نویسندگان
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