Prediction of fatigue response of composite structures by monitoring the strain energy release rate with embedded fiber Bragg gratings

Keulen C. J., AKAY E., Melemez F. F., Kocaman E. S., Deniz A., Yilmaz C., ...More

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, vol.27, no.1, pp.17-27, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 27 Issue: 1
  • Publication Date: 2016
  • Doi Number: 10.1177/1045389x14560358
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.17-27
  • Keywords: structural health monitoring, sensor, fiber Bragg gratings, STIFFNESS DEGRADATION MODEL, CUMULATIVE DAMAGE, LIFE, FBG, SENSORS
  • Istanbul Technical University Affiliated: Yes


Composite materials are becoming increasingly more valuable due to their high specific strength and stiffness. Currently, most components are operated for a number of service cycles and then replaced regardless of their actual condition. Embedded fiber Bragg gratings are under investigation for monitoring these components in real time and estimating their remaining life. This article presents research conducted on a novel technique for prediction of the remaining life of composites under fatigue loading using embedded fiber Bragg grating sensors. A prediction is made of the remaining life at every cycle based on data collected from the sensors and the previous loading history.