PSI - Issue 34

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 34 (2021) 211–220

© 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the Esiam organisers Abstract New Additive Manufacturing (AM) technologies require a deep knowledge of the process parameters to assure proper mechanical performances of structural components. In addition, fatigue loads may lead to premature failures of AM components compared to their traditional-manufactured counterparts. It is of fundamental importance to adopt a time and material saving strategy to investigate the fatigue behaviour of such components. Considering that fatigue is an energy-dissipative process, monitoring the specimen temperature provide useful information regarding the damage evolution within the material. Recently, the Static Thermographic Method (STM) has been proposed as a rapid test procedure to assess the initiation of damage in the material monitoring the temperature evolution during static tensile tests. In this work, the energy release of plain PA12 specimens, obtained by Selective Laser Sintering process, has been assessed allowing the estimation of a macroscopic limit stress that causes in the material the first irreversible plastic deformation. © 2020 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the Esiam organisers Keywords: energy dissipation, infrared thermography, Static Thermographic Method, PA12 1. Introduction In the recent years, Additive Manufacturing (AM) has been developed as an industrial manufacturing technique, with application in several fields (Schmitt et al. (2019); Singamneni et al. (2019)). Its strength lie in the possibility to manufact devices with reduced material, hence with low weight and volume, compared to the traditional counterpart 0 The second European Conference on the Structural Integrity of Additively Manufactured Materials Fatigue damage assessment in AM polymers evaluating their energy release Dario Santonocito a *, Pietro Foti b , Giacomo Risitano a , Filippo Berto b a University of Messina, Department of Engineering, Contrada di Dio, 98166 Messina, Italy b Norwegian University of Science and Technology, MTP Gloshaugen, Richard Birkelands vei 2B, Trondheim 7491, Norway

* Corresponding author. Tel.: +39 3396190552. E-mail address: dsantonocito@unime.it

2452-3216 © 2020 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the Esiam organisers

2452-3216 © 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the Esiam organisers 10.1016/j.prostr.2021.12.031