KEYWORDS: Microsoft Foundation Class Library, Sensors, Composites, Ultrasonics, Testing and analysis, Ferroelectric materials, Acoustic emission, 3D modeling, Wave plates, Finite element methods
The change in extension-twist coupling due to delamination in antisymmetric laminates is experimentally measured.
Experimental results are compared with the results from analytical expression existing in literature and finite
element analysis. The application of the Macro-Fiber Composite (MFC) developed at the NASA Langley Research
Center for sensing the delamination in the laminates is investigated. While many applications have been reported in
the literature using the MFC as an actuator, here its use as a twist sensor has been studied. The real-life application
envisaged is structural health monitoring of laminated composite flexbeams taking advantage of the symmetry in
the structure. Apart from the defect detection under symmetric conditions, other methods of health monitoring for
the same structure are reported for further validation. Results show that MFC works well as a sensor.
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