Title :
A Fiber Optic Sensor for Real Time Monitoring of the Curing/cured State of Adhesives
Author :
Zhang Weiwei ; Chen Xiaping ; Gao Yiqing ; He Xingdao
Author_Institution :
Key Lab. of Nondestructive Testing, Nanchang Hangkong Univ., Nanchang, China
Abstract :
Adhesives are widely used in the assembly of optoelectronic and/or electronic components. Based on the principle of Fresnel reflection, a fiber optic refract meter was set up to monitor the state of adhesives. The determined refractive indices of various liquids were consistent with their reference technical data. When taking a real time monitoring of adhesive refractivity on the refract meter, curing process of the adhesive and thermal expansion of the cured adhesive could be distinguished. Finally, the temperature dependence of the adhesive refractivity was verified with thermo-mechanical analysis through the Lorenz-Lorentz relation. Experimental results show that the setup can be a candidate replacement of thermal analysis apparatus.
Keywords :
Lorenz number; adhesives; assembling; curing; fibre optic sensors; light reflection; monitoring; optoelectronic devices; refractive index; refractometers; thermal expansion; thermomechanical treatment; Fresnel reflection principle; Lorenz-Lorentz relation; adhesive refractivity; curing-cured adhesive state; fiber optic refractometer; fiber optic sensor; optoelectronic component; real time monitoring; reference technical data; temperature dependence; thermal analysis apparatus; thermal expansion; thermomechanical analysis; Curing; Liquids; Optical fiber sensors; Optical fibers; Probes; Real-time systems; Refractive index; adhesive; fiber optic; refractive indices;
Conference_Titel :
Instrumentation, Measurement, Computer, Communication and Control (IMCCC), 2012 Second International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4673-5034-1
DOI :
10.1109/IMCCC.2012.300
