Hostname: page-component-cd9895bd7-gvvz8 Total loading time: 0 Render date: 2024-12-30T22:12:25.111Z Has data issue: false hasContentIssue false
  • English
  • Français

Optical Fiber Loop Sensors for Structural Health Monitoring of Composites

Published online by Cambridge University Press:  01 February 2011

Nguyen Q Nguyen  and
Nikhil Gupta
Nguyen Q Nguyen
Affiliation:
nnguye02@students.poly.edu, Polytechnic Institute of New York University, Mechanical and Aerospace Engineering, Brooklyn, New York, United States
Nikhil Gupta
Affiliation:
ngupta@poly.edu, Polytechnic Institute of New York University, Mechanical and Aerospace Engineering, Brooklyn, New York, United States
Get access

Abstract

In the present work a fiber-optic loop-sensor is designed and tested for possible applications in structural health monitoring of composite materials. It is known that bending an optical fiber beyond a critical curvature leads to loss of optical power through the curved region. The optical power loss depends on the radius of curvature of the loop. The optical power can be measured by a photodetector and a change in the power due a change to the curvature can be measured. In the present research optical fiber-optic loop-sensors are developed that can exploit this concept. Single-mode optical fiber sensors having different loop radii, from 6-10 mm, are fabricated and calibrated for applied strain on the loop. The calibration is carried out using a 0.098 N load cell and a computer controlled translation stage having 50 nm step resolution. Results show that the sensors provide highly repeatable curves for loading and unloading cycles. Smaller loop radii lead to higher optical power losses, resulting in higher sensitivity. Calibration results show that such sensors can be used in structural health monitoring applications. In this approach the coating and cladding of optical fibers are maintained intact; therefore, the sensors are robust and can withstand several composites fabrication processes.

Keywords

opticalsensorlaser
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1129: Symposium V – Materials and Devices for Smart Systems III , 2008 , 1129-V07-11
Copyright
Copyright © Materials Research Society 2009

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

[1] Morey, W. W., in International Conference on Optical Fiber Sensors, Sydney, Australia 1990, pp. 285.Google Scholar
[2] Melle, S. M., Liu, K., Measures, R., SPIE-1994 1991, 1954, 255.Google Scholar
[3] Foote, P. D., SPIE-1994 1994, 2361, 290.Google Scholar
[4] Kim, K. S., Ismailm, Y., Springer, G. S., Journal of Composites Materials 1993, 27, 1663.Google Scholar
[5] Habel, W. R., Hofmann, D., SPIE-1994 1994, 2361, 180.Google Scholar
[6] Rashleigh, S. C., in 1st International Conference on Optical Fiber Sensors, IEE, London 1983, 210.Google Scholar
[7] Inandi, D., Elamar, A., Vurpillot, S., SPIE-1994 1994, 2361, 216.Google Scholar
[8] de Oliveira, R., Ramos, C. A., Marques, A. T., Computers & Structures 2008, 86, 340.Google Scholar
[9] Liu, G., Chuang, S. L., Sensors and Actuators A 1998, 69, 143.Google Scholar
[10] Wang, Q., Grattan, K. T. V., Palmer, A. W., Sensors and Actuators A: Physical 1998, 71, 179.Google Scholar
[11] Nguyen, N. Q., Gupta, N., Ioppolo, T., Otugen, M. V., Journal of Materials Science 2008, In press.Google Scholar
[12] Maharsia, R., Gupta, N., Jerro, H. D., Peck, J. A., in American Society for Composites 18th Annual Conference, Vol. 125, Gainesville, FL 2003.Google Scholar
[13] Berthold, J. W., in 10th International conference on optical fibre sensors, Vol. 11, Grassgow, UK 1994, 182.Google Scholar
[14] Udd, E., Fiber Optic Sensors: An Introduction for Engineers and Scientists John Wiley & Sons, Inc., 2006.Google Scholar
[15] Guangping, X., Leong Keey, S., Asundi, A., Optics and Lasers in Engineering 1999, 32, 437.Google Scholar
[16] MacLean, A., Moran, C., Johnstone, W., Culshaw, B., Marsh, D., Parker, P., Sensors and Actuators A: Physical 2003, 109, 60.Google Scholar
[17] Luo, F., Liu, J., Ma, N., Morse, T. F., Sensors and Actuators A: Physical 1999, 75, 41.Google Scholar
[18] Pandey, N. K., Yadav, B. C., Sensors and Actuators A: Physical 2006, 128, 33.Google Scholar
[19] Thomas Lee, S., Aneeshkumar, B., Radhakrishnan, P., Vallabhan, C. P. G., Nampoori, V. P. N., Optics Communications 2002, 205, 253.Google Scholar
[20] Bakalidis, G. N., Georgoulas, N. A., Karafolas, N. J., Georgopoulos, C. J., International Journal of Optoelectronics 1993, 8, 187.Google Scholar
[21] Bakalidis, G. N., Glavas, E., Voglis, N. G., Tsalides, P., IEEE transactions on instrumentation and measurement 1996, 45, 328.Google Scholar
[22] Renner, H., Journal of Lightwave technology 1992, 10, 544.Google Scholar
[23] Murakami, Y., Tsuchiya, H., IEEE Journal of quantum electronics 1978, QE-14, 495.Google Scholar