Li, Youjian, Sarvestani, Hamidreza Yazdani, Mofatteh, Hossein, Karamzadeh, Vahid, Ashrafi, Behnam, Gholipour, Javad et Akbarzadeh, Abdolhamid. 2025. « Mechanical characterization of porous 3D-printed polymer-derived ceramics ». Communication lors de la conférence : CSME-CFDSC-CSR 2025 International Congress (Montreal, QC, Canada, May 25-28, 2025).
Prévisualisation |
PDF
59 - Mechanical characterization of poro.pdf - Version publiée Licence d'utilisation : Tous les droits réservés aux détenteurs du droit d'auteur. Télécharger (144kB) | Prévisualisation |
Résumé
The mechanical characterization of bulk polymer-derived ceramics (PDCs) presents a notable challenge due to the inherentporosity introduced during pyrolysis, which complicates accurate determination of material properties. Conventional methods oftenoverlook the voids formed by resin evaporation, resulting in inaccurate estimations of bulk stiffness. To address this limitation, wepropose a methodology to estimate Young’s modulus of bulk 3D-printed PDCs, providing a more precise understanding of theirmechanical behavior. Hollow cylindrical specimens with varying wall thicknesses were fabricated using a liquid crystal display 3Dprinter. Micro-computed tomography scanning was employed to investigate the porous structure of these specimens, enabling thecalculation of their densities and porosities. Using the reconstructed images, cubic mesh elements were generated for each sample,and finite element analysis (FEA) was conducted to simulate their elastic deformation under compression. A hypothetical bulkstiffness (Ebs) was assigned to the models, and the stiffness of the cylindrical specimens (Ecs) was derived. In parallel, compressiontests were performed on the 3D-printed cylindrical samples to experimentally determine their stiffness (Ece). Since the geometricmodels used in both the simulations and experiments were identical, the ratio of the true bulk Young’s modulus (Eb) to Ece wasfound to equal the ratio of Ebs to Ecs, enabling the calculation of Eb. This approach offers a robust framework for determining thebulk material properties of porous materials, including engineering ceramics and biological materials.
| Type de document: | Communication (Communication) |
|---|---|
| Informations complémentaires: | Progress in Canadian Mechanical Engineering, Volume 8. Co-chairs: Lucas A. Hof, Giuseppe Di Labbio, Antoine Tahan, Marlène Sanjosé, Sébastien Lalonde and Nicole R. Demarquette. |
| Date de dépôt: | 18 déc. 2025 14:39 |
| Dernière modification: | 18 déc. 2025 14:39 |
| URI: | https://espace2.etsmtl.ca/id/eprint/32173 |
Actions (Authentification requise)
 |
Dernière vérification avant le dépôt |