Analysis of advanced pore morphology (APM) foam elements using compressive testing and time‐lapse computed microtomography

0546368 - ÚTAM 2022 RIV CH eng J - Journal Article
Borovinsek, M. - Koudelka_ml., Petr - Šleichrt, Jan - Vopálenský, Michal - Kumpová, Ivana - Vesenjak, M. - Kytýř, Daniel
Analysis of advanced pore morphology (APM) foam elements using compressive testing and time‐lapse computed microtomography.
Materials. Roč. 14, č. 19 (2021), č. článku 5897. E-ISSN 1996-1944
R&D Projects: GA MŠMT(CZ) EF16_019/0000766
Grant - others:AV ČR(CZ) StrategieAV21/23
Program: StrategieAV
Institutional support: RVO:68378297
Keywords : advanced pore morphology (APM) foam * computed microtomography * in‐situ mechanical testing * compressive loading * deformation behaviour * porosity analysis
OECD category: Materials engineering
Impact factor: 3.748, year: 2021
Method of publishing: Open access
https://doi.org/10.3390/ma14195897

Advanced pore morphology (APM) foam elements are almost spherical foam elements with a solid outer shell and a porous internal structure mainly used in applications with compressive loading. To determine how the deformation of the internal structure and its changes during compression are related to its mechanical response, in‐situ time‐resolved X‐ray computed microtomography experiments were performed, where the APM foam elements were 3D scanned during a loading procedure. Simultaneously applying mechanical loading and radiographical imaging enabled new insights into the deformation behaviour of the APM foam samples when the mechanical response was correlated with the internal deformation of the samples. It was found that the highest stiffness of the APM elements is reached before the appearance of the first shear band. After this point, the stiffness of the APM element reduces up to the point of the first self‐contact
between the internal pore walls, increasing the sample stiffness towards the densification region.
Permanent Link: http://hdl.handle.net/11104/0322904