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http://dx.doi.org/10.7234/kscm.2010.23.3.050

Fluorescence Characteristic Analysis for Fiber Detection in Sectional Image of Fiber Reinforced Cementitious Composite  

Lee, Bang-Yeon (University of Michigan 토목공학과)
Park, Jun-Hyung (충남대학교 토목공학과)
Kim, Yun-Yong (충남대학교 토목공학과)
Publication Information
Composites Research / v.23, no.3, 2010 , pp. 50-57 More about this Journal
Abstract
It is important to detect fibers in the sectional image of fiber reinforced cementitious composites (FRCC), since the fiber distribution is a crucial factor to predict or evaluate the mechanical performance of FRCC. In this paper, we investigated the fluorescence characteristics of Polyvinyl Alcohol (PVA) fibers, Polyethylene Terephthalate (PET) fibers, Polyethylene (PE) fibers, and Polypropylene (PP) fibers used in Engineered Cementitious Composites (ECC), which is a special kind of FRCC that incorporates synthetic fibers and exhibits extremely ductile behavior in uniaxial tension, to detect each fiber according to its type. Furthermore, optimum excitation and emission wavelengths were proposed on the basis of maximum difference of Relative Fluorescence Intensity (RFI) between two types of fibers used in the hybrid ECC. Optimum threshold values to discriminate two types of fibers using statistical tools were also proposed. Finally, images of four types of fibers obtained using a fluorescence microscope are compared.
Keywords
Cementitious Composite; ECC(Engineered Cementitious Composite); Synthetic Fiber; Hybrid; Fluorescence Characteristic;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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