کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
822631 | 1469564 | 2007 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Strain and damage monitoring of CFRP in impact loading using a fiber Bragg grating sensor system Strain and damage monitoring of CFRP in impact loading using a fiber Bragg grating sensor system](/preview/png/822631.png)
A fiber-optic system featuring strain measurement and ultrasonic detection was constructed with fiber Bragg gratings based on wavelength–light intensity conversion technique. This fiber Bragg grating sensing system consists of a broadband light source, a broadband optical filter for strain measurement and a narrowband tunable filter for ultrasonic detection. The system was applied to strain measurement in impact loading to carbon fiber-reinforced plastics and the subsequent impact damage detection. Experimental results demonstrated that fiber Bragg grating sensors could measure strain with higher resolution compared with conventional strain gauges. Furthermore, ultrasonic inspection in which ultrasonic sensitivity was maximized by controlling the transmissive wavelength of the tunable filter could detect a 6.3 × 9 mm2 impact damage.
Journal: Composites Science and Technology - Volume 67, Issues 7–8, June 2007, Pages 1353–1361