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2025 | OriginalPaper | Chapter

Real-Time Shearography Measurements of 3D Printed Auxetic Specimens During Flexural Tests

Authors : V. Pagliarulo, C. Saltarelli, M. Paturzo, I. Papa, F. Napolitano, P. Russo

Published in: Dynamic Response and Failure of Composite Materials

Publisher: Springer Nature Switzerland

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Abstract

Auxetic structures with negative values of Poisson’s ratio attract attention due to their surprising deformation response, durability under long-term loading and energy absorption properties. In this work, different 3D-printed specimens with the internal auxetic structure were investigated in real time during flexural tests by means of shearography.

The 3D printed specimens have been mechanically characterized by performing flexural tests according to the ASTM D790 standard in order to investigate the effect of the new manufacturing process on the flexural strength and modulus. The lateral face of the specimens was monitored in real time during the test. The preliminary results showed the points of greatest stress where the specimens starts to fail. This information can be useful to understand the behaviour of the investigated structures in order to improve geometries and printing processes.

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Title: Real-Time Shearography Measurements of 3D Printed Auxetic Specimens During Flexural Tests
Authors: V. Pagliarulo
C. Saltarelli
M. Paturzo
I. Papa
F. Napolitano
P. Russo
Publisher: Springer Nature Switzerland
Book: Dynamic Response and Failure of Composite Materials
Print ISBN: 978-3-031-77696-0

Electronic ISBN: 978-3-031-77697-7

Copyright Year: 2025
DOI: https://doi.org/10.1007/978-3-031-77697-7_5