@inproceedings{0e6c93fbb9ad4717a08689ce621aa133,
title = "Response of long-gauge strain sensors in proximity of force application point",
abstract = "Strain field distributions within a beam are frequently calculated using linear theory. However, linear beam theory does not provide solutions in the areas close to force application points, due to local strain perturbations caused by the force. Hence, interpretation of strain measurements taken by long-gauge sensors in proximity of force application point is difficult, as the measurements cannot be directly compared with analytical models. In addition, due to perturbation, sensors with different gauge lengths installed at that same location provide different values of measured strain. This paper explores and develops a potential analytical model for strain field perturbation in a beam's regions close to force application points, and investigates the influence of sensor gauge length on strain measurement in these areas. An analytical model derived by Seewald is modified in order to fit the sensor measurements. Based on the model, evaluation of strain measurement is performed taking into account the gauge length of the sensor. Results are validated using data from a real structure, Streicker Bridge at Princeton University campus.",
keywords = "Long-gauge strain sensors, bridge monitoring, fiber-optic sensors, force application point, strain-field perturbation",
author = "Rachel Marek and Branko Glisic",
note = "Publisher Copyright: {\textcopyright} 2018 SPIE.; Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018 ; Conference date: 05-03-2018 Through 08-03-2018",
year = "2018",
doi = "10.1117/12.2300889",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Kon-Well Wang and Hoon Sohn and Lynch, {Jerome P.}",
booktitle = "Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018",
address = "United States",
}