Preliminary research in characterization of fatigue load parameters using fiber optic

Fatigue is the primary cause of structural failure. Fatigue failures are caused by fatigue loadings in the form of cyclic loads. To avoid fatigue failures, structures need monitoring. This paper reports a study of optical fiber Bragg grating responses under variable amplitude fatigue load.Use of optical fiber in monitoring structural condition becomes extensive research nowadays due to its advantageous characteristics than conventional method such as using strain gauges. A standard specimen (ASTM E606) will be used for initial study and followed by implementing the concept to the wing-box structure. The specimens will be attached with fiber Bragg grating sensor and test configuration will be set up. All the data and information will be analyzed then a comparison with strain gauge sensor will be done for validation.