期刊
EXPERIMENTAL MECHANICS
卷 48, 期 1, 页码 107-117出版社
SPRINGER
DOI: 10.1007/s11340-007-9067-3
关键词
mechanical properties of polymer; fiber Bragg grating sensor; process-dependent properties; chemical shrinkage; glass transition temperature; coefficient of thermal expansion; elastic modulus
We propose an integrated technique to measure critical mechanical properties of polymeric materials. The method is based on a fiber Bragg grating (FBG) sensor. A polymer of interest is cured around a glass FBG and the Bragg wavelength (BW) shift is measured and documented while polymerization progresses at the curing temperature. After complete polymerization, the BW shift is monitored continuously as the temperature of the cured polymer changes. The desired material properties are then found inversely from the relationship between the Bragg wavelength shift and the deformation of the polymer caused by the changes in the material properties.
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