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NDT.net Issue - 2016-11 - Articles
NDT.net Issue: 2016-11
Publication: e-Journal of Nondestructive Testing (NDT) ISSN 1435-4934 (NDT.net Journal)
ARTICLE

Control of ultrasound propagation through 3D-printed printed CFRP based on the curvature of the fibers

Takeshi Ashizawa12, Daniel López-Rodrigo2, Yoshihiro Mizutani130
1Department of Mechanical Engineering; Tokyo Institute of Technology45, Tokyo, Japan
2School of Aeronautics and Space Engineering; Technical University of Madrid (UPM) 54, Madrid, Spain

Abstract: This paper addresses two incipient subjects with potential impact in the composites industry: 3D-printing of fiber-reinforced plastics and ultrasound testing of lay-ups with curved fiber. First, the advances made hitherto in the field of ultrasound propagation through solid media are reviewed, highlighting the attributes of the main typologies of wave. Then, results of a pulsed sine wave test performed on a 3D-printed CFRP specimen with curved fibers are obtained and studied. The data registered correspond to the measurement of the signal amplitude—wave energy—over a meshed region of the specimen under different configurations of the emitting/receiving transducers. In such a way it can be eventually demonstrated a moderate dependence between the curvature of the fibers and the trajectory followed by the ultrasound waves. These results open the doors towards further development that may enable the control of ultrasound propagation with such potential applications as the addressing of vibrations in sensitive components or the simulation of the operating principle of the electronic SAW devices.

Keywords: attenuation (102), Ultrasound addressing, 3D-printing (2), carbon fiber-reinforced plastic (CFRP), orthotropic materials,
*Keywords are freely formed keywords from the authors and thus you may Search also for similar terms.

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