In order to study the strength of the composite material plate problems,
need to adopt a nondestructive testing method to obtain the specimen surface
under the effect of high-speed impact regularity of shape. The projection
profilometry was used to measure the surface profile or the full field
deformation. Furtherly, by using the Fourier transform algorithm, there is only
one frame of captured image which is needed in the measurement, so that it can be introduced into the high
speed impaction procedure measurement. An experimental system, which was
contained with an impact setup and the projection profilometry measurement
part, was constructed for the impaction action characteristic research. The
metallic impact object can be launched by a gas gun or a spin fan, respectively.
The detected object is manufactured by composite materials. In order to increase the surface
deformation measurement accuracy, the calibration method and the error was
discussed with different calibration specimen. And then, the proposed
profilometry measurement method is proved by the gas gun and spin fan
projectile test. The surface deformation of the manufactured composite plates
and fan case are measured in the impaction procedure. So that the impact action
details can be described much more clearly than the traditional video
monitoring method.
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