کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8028165 | 1517638 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
In-situ and real-time tests on the damage evolution and fracture of thermal barrier coatings under tension: A coupled acoustic emission and digital image correlation method
ترجمه فارسی عنوان
آزمایشات در محل و زمان واقعی بر روی تکامل آسیب و شکستن پوشش های حرارتی تحت تنش: یک انتشار صوتی همراه و روش همبستگی تصویر دیجیتال
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
چکیده انگلیسی
By using a coupled acoustic emission (AE) and digital image correlation (DIC) technique, the failure behavior of air plasma sprayed thermal barrier coatings (TBCs) was investigated. The in-situ DIC observations show that the characteristics of AE signals, extracted from the fast Fourier transform, are closely related to the failure modes of a TBC system, which was applied to real-time reveal its damage evolution during tension. It is shown that there is a typical power-law relationship between the vertical crack density in coating and strain in substrate. A damage variable defined as a function of the cumulative AE events can be used to characterize the different fracture stages of a TBC system. With the increase of strain in substrate, the AE-b value estimated by the Gutenberg-Richter law varies from 2.0 at the initial regime to a plateau value of 1.2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 240, 15 February 2014, Pages 40-47
Journal: Surface and Coatings Technology - Volume 240, 15 February 2014, Pages 40-47
نویسندگان
M. Zhou, W.B. Yao, X.S. Yang, Z.B. Peng, K.K. Li, C.Y. Dai, W.G. Mao, Y.C. Zhou, C. Lu,