@article{scholars19864, journal = {Optical Fiber Technology}, year = {2024}, doi = {10.1016/j.yofte.2024.103687}, volume = {83}, title = {Low pressure pipeline leak localization using highly sensitive rubber-based diaphragm FBG pressure sensors and NPW method}, note = {cited By 0}, keywords = {Aluminum; Diaphragms; Fiber Bragg gratings; Pipelines; Rubber, Leak localization; Localization performance; Low pressure pipeline; Low pressures; Negative pressure wave; Negative pressure wave methods; Negative pressure waves; Pipeline leak localization; Pressure pipeline; Rubber-based diaphragm fiber bragg grating pressure sensor, Pressure sensors}, author = {Vorathin, E. and Choong, M. X. and Mohammad, M. and Othman, A. R. and Ismail, A. R.}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85183454041&doi=10.1016\%2fj.yofte.2024.103687&partnerID=40&md5=b16b2b239f3356e08552576215af1440}, abstract = {Leak localization performance between rubber-based diaphragm fibre Bragg grating (FBG) pressure sensors and aluminium-based diaphragm FBG pressure sensors were compared and studied. A total of two aluminium-based and two rubber-based diaphragm FBG pressure sensors were fitted on a pipe with various leak points and sizes. Calibration test results showed that rubber-based diaphragm FBG pressure sensors are 30 times much higher as compared to aluminium-based diaphragm FBG pressure sensors at 93.2 pm/kPa and 96.6 pm/kPa. For leak localization test using negative pressure wave (NPW), rubber-based diaphragm FBG pressure sensors capable to localize accurately the leak location with percentage of error less than 10 . This is due to the high pressure resolution produced by the rubber-based diaphragm FBG pressure sensors. {\^A}{\copyright} 2024 Elsevier Inc.} }