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- Title
PLASTIC OPTIC FIBER (POF) BASED PHASE DIFFERENCE MEASUREMENT METHOD FOR ESTIMATION OF CRACK MOUTH OPENING DISPLACEMENT (CMOD) IN CONCRETE.
- Authors
SAMRAJYAM, K.; SOBHA, B.; RAO, T. D. GUNNESWARA; PRASAD, R. L. N. SAI
- Abstract
Crack detection and measurement of crack width in concrete are important for structural health monitoring of structures. In this paper, we report on a technique for estimation of crack mouth opening displacement ((CMOD) in concrete specimens of M20 composition. It is based on the principle of using Plastic Optical Fiber(POF) based strain displacement sensor employing phase difference measurement technique. The motivation for the method has been to improve on the sensitivity of detection of crack width measurement and propagation by looking at the phase changes rather than amplitude changes as attempted earlier by the authors.
- Subjects
PLASTIC optical fibers; FRACTURE mechanics; DISPLACEMENT (Mechanics); STRAINS &; stresses (Mechanics); CONCRETE
- Publication
i-manager's Journal on Civil Engineering, 2014, Vol 4, Issue 2, p13
- ISSN
2231-1068
- Publication type
Article
- DOI
10.26634/jce.4.2.2985