کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7214377 | 1469463 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microwave nondestructive detection and quantitative evaluation of kissing defects in GFRP laminates
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Kissing defects remain difficult to detect due to insufficient contrast. Herein we proposed a microwave equiphase frequency truncation method (EFTM) to detect and evaluate the thickness of kissing defects in GFRP laminates. It is found that the frequency difference varies linearly with the kissing defect thickness under the assumption of single reflection, and the linear slope is approximately in inverse proportion to the product of the thickness and permittivity term of the specimen. Theoretical calculation, simulation and experimental detection results of GFRP laminates and Teflon specimens all showed a fine linearity relationship between the frequency difference and the thickness of kissing defect. Besides, the experimental linear slopes were in good agreement with theoretical predictions for both GFRP and Teflon specimens, which indicates the applicability of this method for different dielectric materials. The experimental results clearly showed that kissing defects of 2.92μm was successfully detected and quantified. In summary, this method is feasible and effective in detecting and evaluating kissing defects in dielectric laminates.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 162, 7 July 2018, Pages 117-122
Journal: Composites Science and Technology - Volume 162, 7 July 2018, Pages 117-122
نویسندگان
Peiyu Wang, Zhencheng Li, Licheng Zhou, Yongmao Pei,