Abstract
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.
Original language | English |
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Journal | Measurement |
Volume | 60 |
Pages (from-to) | 104-113 |
Number of pages | 10 |
ISSN | 0263-2241 |
DOIs | |
Publication status | Published - 2015 |
Externally published | Yes |
Keywords
- Fiber optics
- On-specimen strain measurement
- Distributed sensing
- Material characterization
- Element testing