کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
295505 511552 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Application of 3×3 coupler based Mach-Zehnder interferometer in delamination patch detection in composite
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Application of 3×3 coupler based Mach-Zehnder interferometer in delamination patch detection in composite
چکیده انگلیسی

Interferometric type fiber-optic sensors have advantages of high sensitivity and can be employed to measure very small measurand. In this paper, a 3×3 coupler based demodulation using software approach is introduced and its advantages are presented. Based on this technique, mechanical tests are performed and the sensing arm of the interferometer is embedded along the neutral plane of the laminate. A quasi-impulse loading is applied and the total elongation of the embedded optical fiber is measured as a function of load position. When a delamination is present, the shift of neutral axis position can be clearly reflected in the fiber integral strain versus load position plot. Experimental results demonstrate the feasibility of detecting both the size and location of delamination patch with the proposed technique.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: NDT & E International - Volume 44, Issue 5, September 2011, Pages 469–476
نویسندگان
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