کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10627632 | 990054 | 2012 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Non-destructive evaluation of thick glass fiber-reinforced composites by means of optically excited lock-in thermography
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Non-destructive evaluation of thick glass fiber-reinforced composites by means of optically excited lock-in thermography Non-destructive evaluation of thick glass fiber-reinforced composites by means of optically excited lock-in thermography](/preview/png/10627632.png)
چکیده انگلیسی
Optically excited lock-in thermography (OLT) has been exploited for quantitative assessment of simulated subsurface defects in thick glass fiber reinforced polymer (GFRP) composite laminates routinely employed for the manufacturing of luxury yachts. The paper investigates the detection limits associated to defects geometry and depth as well as recognition of barely visible impact damage over the external gel-coat finish layer. The obtained results demonstrated the effectiveness of lock-in infrared thermography as a powerful and non-contact full-field measurement technique for the inspection of large GFRP structures. In particular, results showed that, by using a transmission set-up instead than a reflection one, accurate assessment (standard uncertainty < 1.4%) of impact damages could be attained, whereas estimation of delaminations depth is critically influenced by the actual area and aspect ratio of the discontinuity. A simple model to account for this dependency has been proposed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part A: Applied Science and Manufacturing - Volume 43, Issue 11, November 2012, Pages 2075-2082
Journal: Composites Part A: Applied Science and Manufacturing - Volume 43, Issue 11, November 2012, Pages 2075-2082
نویسندگان
Roberto Montanini, Fabrizio Freni,