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has been cited by the following article:

• TITLE: Application of 3D Projection Profilometry in the High Speed Impaction Surface Deformation Measurement Research

  AUTHORS: Eryi Hu

  KEYWORDS: Projection Profilometry, Fourier Transform Algorithm, Deformation Measurement, Impaction Monitoring

  JOURNAL NAME: Journal of Signal and Information Processing, Vol.11 No.4, November 26, 2020

  ABSTRACT: 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.