Analysis characteristics embedded plastic optical fiber sensors for crack detection in concrete structures

1st International Conference on Global Issue for Infrastructure, Environment & Socio-Economic Development

经济学;社会科学（总论）

Arifin, A.^1 ; Kasmiah^1 ; Yunus, M.^1 ; Dewang, S.^1 ; Abdullah, B.^1 ; Tahir, D.^1

Department of Physics, Hasanuddin University, Makassar

90245, Indonesia^1

关键词: Easy fabrication;    High sensitivity;    LED light source;    Light intensity;    Measurement system;    Optical power meters;    Plastic optical fiber (POF);    Testing machine;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/235/1/012013/pdf
DOI  :  10.1088/1755-1315/235/1/012013

学科分类：社会科学、人文和艺术（综合）

来源: IOP

【 摘 要 】

Plastic optical fiber (POF) used as sensors to detect cracks in concrete structures. Sensors made using straight, sinusoidal, loop, and triangle configurations. The POF connected to LED light source and photodetector. The light from LED will propagate along the embedded POF in the concrete then received by the photodetector and measured using by Optical Power Meter in the form of output power displayed on the computer. Sensor testing is done by putting pressure on the concrete using the Ultimate Testing Machine until a crack occurs causing the POF in the concrete to experience strain. The strain of the POF sensor will cause power losses, so the light intensity received by the photodetector will be decreased. The best measurements obtained at triangle configuration sensors 60o have characteristics with a range value of 1.975 μW, the sensitivity of 0.790 μW/cm and a resolution of 0.001 cm. Sensors based on POF for measurement of cracks in concrete structures have the advantages like easy fabrication, low cost, simple measurement system, and high sensitivity.