کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
730252 1461537 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modified relative arrival time technique for sizing inclined cracks
ترجمه فارسی عنوان
تکنیک زمان رسیدن نسبی اصلاح شده برای اندازه گیری ترکهای شیب دار
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
چکیده انگلیسی


• A novel method is proposed for estimating length of inclined cracks.
• The proposed method uses ultrasonic B-scan signals.
• The proposed method is based on the times of arrival of the tip and corner echoes.
• The proposed method estimates the crack size as well as its inclination angle.

In this paper, a modified relative time technique is proposed for estimating the length and the orientation of inclined cracks using ultrasonic B-scan signals. The proposed technique utilizes the relative position of the tip diffraction echo to the corner reflection echo in an ultrasonic B-scan image to estimate the crack length and the crack inclination angle. Both finite element simulated signals and experimental signals, which are obtained from a specimen with a 3 mm crack with different inclination angles, are used to evaluate the estimation error of the proposed technique. The results show that the proposed technique overcomes the shortcoming of the conventional relative arrival time technique in sizing inclined cracks.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Measurement - Volume 50, April 2014, Pages 86–92
نویسندگان
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