Journal article
On-specimen strain measurement with fiber optic distributed sensing
Technion – Israel Institute of Technology, Faculty of Civil and Environmental Engineering, Technion City, Haifa 32000, Israel
The paper explores the possibility of the use of high spatial resolution fiber optic distributed sensing technology for on-specimen strain measurements in laboratory element testing. The approach provides the means to evaluate specimen surface deformation through a novel conjuncture helical envelope configuration of a single optical fiber ribbon.
Given that this technology has yet to be applied in the area of material characterization, the paper investigates the most basic setup of a uniaxial compression test. It is shown that the approach provides a full-field view of surface strains with a resolution and accuracy level that is comparable with traditional deformation sensors.
It enables the evaluation of small-strain mechanical properties as well as visualization and quantification of any indication of non-uniform test conditions. Because of the relative ease and low-cost for instrumentation, the suggested approach has a great potential to be a routine application for element testing.
Language: | English |
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Year: | 2014 |
Pages: | 104-113 |
ISSN: | 1873412x and 02632241 |
Types: | Journal article |
DOI: | 10.1016/j.measurement.2014.09.054 |