Circumferential strain measurement of high strength concrete in triaxial compression by fiber optic sensor

摘要

This paper deals with circumferential strain measurement for concrete in triaxial compression by using fiber optic sensing system. A fiber optic sensing system was developed to measure the elongation of the optical fiber for cylindrical concrete specimen in triaxial compression by using white light interfering. And a theoretical model describing the relationship between the elongation of the fiberglass and the circumferential strain of cylindrical concrete specimen in triaxial compression was proposed, too. Some tests were done to verify the measurement method. The results indicate that the proposed method is valid. (C) 2001 Elsevier Science Ltd. All rights reserved. [References: 12]