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Quantitative
NDI |
Shearography
is a recently developed NDI technique that uses a form of interferometry
to detect flaws in composite and sandwich structure. The goal of
this Phase I SBIR was to demonstrate approaches for using solid
mechanics simulations to enhance the application of the shearography
method, and provide better interpretation of the results.
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Simulation
of deflected shape that results from applying a vacuum to
a composite panel with an elliptically shaped delamination.
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Simulations
of fringe patterns produced by shearography method, for three
different shear vector angles.
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Analysis
of surface deflection profile for a composite skin on a foam
core, with a debond located at the skin/core interface. Analytic
method accounts for "soft" boundary condition provided
by core. Comparison is made to a finite element analysis of
both the skin and core.
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Shearography
/ Image Processing
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Actual
fringe patterns of phase angle produced by shearography.
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Displacement
plot obtained by imaging processing.
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Return
to Acquisition
And Life Cycle Management Services
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