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Embedded Distributed Fiber Optic Strain Measurements for Delamination Detection in Composite Laminates

Brown, Kevin S.
http://rave.ohiolink.edu/etdc/view?acc_num=dayton1543330547266239

Abstract Details

2018, Doctor of Philosophy (Ph.D.), University of Dayton, Mechanical Engineering.
Aircraft structures are increasingly being fabricated from composite materials due to their light weight and relatively high strength and stiffness. These potential benefits are offset by the introduction of new failure modes, such as internal delamination within the composites. To ensure the integrity and safety of composite aircraft structures, methods to detect internal delamination are needed. In the laboratory, internal delamination damage is often tracked using X-ray computed tomography, but this technique suffers from several drawbacks. To alleviate these concerns, a new approach has been developed which utilizes embedded fiber optics to measure the strains within composite test articles. Measured strains are shown to compare well with finite element predictions under both axial and bending loads. Based on strain differences observed between undamaged and delaminated test articles, the fiber optic strains can also be used to predict the location and approximate length of delamination damage.
Steven Olson, Ph.D. (Committee Chair)
101 p.
Mechanical Engineering
fiber optics; optical strain sensing; carbon composites; delaminations

Recommended Citations

Citations

  • Brown, K. S. (2018). Embedded Distributed Fiber Optic Strain Measurements for Delamination Detection in Composite Laminates [Doctoral dissertation, University of Dayton]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1543330547266239

    APA Style (7th edition)

  • Brown, Kevin. Embedded Distributed Fiber Optic Strain Measurements for Delamination Detection in Composite Laminates. 2018. University of Dayton, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=dayton1543330547266239.

    MLA Style (8th edition)

  • Brown, Kevin. "Embedded Distributed Fiber Optic Strain Measurements for Delamination Detection in Composite Laminates." Doctoral dissertation, University of Dayton, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1543330547266239

    Chicago Manual of Style (17th edition)

dayton1543330547266239
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This open access ETD is published by University of Dayton and OhioLINK.