Verification of the impact damage detection system for airframe structures using optical fiber sensors
2009
The basic technologies of the impact damage detection system (IDDS) of composite structures were developed and
demonstrated using a composite structure with embedded small-diameter optical fiber sensors by Authors in FY2002. In
our current R&D, the IDDS consisting of composite structure with embedded optical fiber sensors and interrogation
units is developed for practical airframe application. The system evaluation by using composite substructures and coupon
specimens are planned to proceed towards product. As one of the foremost tasks for the application, it is important to
evaluate the system whether having the probability of damage detection sufficiently or not. In this study, to evaluate the
probability of detection of the system, the impact tests for barely visible impact damage (BVID) are conducted by using
coupon specimens with being embedded small-diameter optical fibers. From the test result, reliability of the IDDS is
evaluated.
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