Ian Yulianti, Abu Sahmah M. Supa'at, Sevia M. Idrus, Ojo Kurdi
This paper demonstrates the analysis of fiber Bragg grating properties due to hydrogel coating swelling effect. The modeling was done by simulating the hydrogel swelling behavior, and then carried out strain and stress analysis induced on the fiber due to hydrogel expansion. Meshless numerical method was adopted to solve the Poison Nernst Planck equation coupled to mechanical equation to simulate the hydrogel swelling. The hydrogel coating thickness was varied for 4 values, namely 30 μm, 40 μm, 50 μm and 60 μm. The strain and stress analysis were done numerically using finite element method. The results show that the strain on the fiber increases as the hydrogel coating thickness increased. The increase of hydrogel thickness results in the improvement of sensor sensitivity at the expense of stress value. © 2011 American Institute of Physics.
Faculty of Mathematics and Natural Science, Universitas Negeri Semarang Kampus Sekaran, Semarang, Indonesia; Faculty of Electrical Enginering, Universiti Teknologi Malaysia Skudai Campus, Johor Bahru, Malaysia; Faculty of Engineering, Universitas Diponegoro, Semarang, Indonesia
