Abstract
A steel beam compressive strain sensor using single-mode-multimode-single-
mode (SMS) fiber structure is demonstrated. Parallel measurements are made using an
electrical resistance (ER) strain gauge along with the SMS to sense the compressive strain
on the steel beam. The ER strain gauge result shows that the steel beam has an elastic
limit at a compressive load of 42 kN, as predicted via calculation. On the other hand, the
SMS sensor is capable to detect the elastic limit by its significant increase in the slope of
the peak center wavelength from compressive strain of 0.000261
–
0.001986 mm/mm.
Moreover, the SMS sensor exhibits compressive strain sensitivity of
−
1411.2 nm/(mm/mm)
from the initial load until it reaches the beam elastic limit.
Original language | English |
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Pages (from-to) | - |
Journal | IEEE Photonics Journal |
DOIs | |
Publication status | Published - 3 Feb 2016 |