caa a22 4500 60619553X CHVBK 20210128100919.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s10934-015-9973-1 doi (NATIONALLICENCE)springer-10.1007/s10934-015-9973-1 Porosity comparative analysis of porous copper and OOF modelling [Elektronische Daten] [Cindy Waters, Mustafa Salih, Stephen Ajinola] An understanding of the overall porous copper behavior is developed through the combination of real data from microstructures and the fundamental material characteristics of the constitutive phases. Captured morphological images, using the Nano-CT are utilized to generate the geometric information. Object-oriented finite element (OOF) analysis is quite a novel numerical approach to incorporate morphological images, acquired from scanning electron microscopy into 2-D finite element modeling. This paper seeks to investigate the porosities using two methods (Archimedes principle and Nano-CT) and then to introduce an image-based extended OOF modeling technique based on mapping the real microstructures of porous copper and gage its ability to predict the elastic moduli and evaluate the deformation mechanism resulting from the porous copper. Dissolution sintering technique was used by mixing Cu powders with NaCl in the volume ratio of 1:1 and 1:3 adding polyvinyl alcohol solution as a binder with NaCl as the space holder. The green form was pressed at 375MPa using a four-column hydraulic lab press. The NaCl was leached out in hot water at 70°C and then sintered to a temperature of 850°C. Porosity values were determined from density measurements to give the porosity values of 42.2 and 45.71% for volume ratio of 1:1 and 1:3, respectively. The material properties were obtained from the tests and compared to previous literature. Very good agreement has been shown, establishing the viability of this kind of morphology-based numerical approach. Springer Science+Business Media New York, 2015 Archimedes principles nationallicence Object-oriented finite element (OOF2) nationallicence Nano-CT nationallicence Waters Cindy Mechanical Engineering, North Carolina A&T State University, 27411, Greensboro, NC, USA aut Salih Mustafa Mechanical Engineering, North Carolina A&T State University, 27411, Greensboro, NC, USA aut Ajinola Stephen Mechanical Engineering, North Carolina A&T State University, 27411, Greensboro, NC, USA aut Journal of Porous Materials Springer US; http://www.springer-ny.com 22/4(2015-08-01), 989-995 1380-2224 22:4<989 2015 22 10934 https://doi.org/10.1007/s10934-015-9973-1 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10934-015-9973-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Waters Cindy Mechanical Engineering, North Carolina A&T State University, 27411, Greensboro, NC, USA aut NATIONALLICENCE 700 1- Salih Mustafa Mechanical Engineering, North Carolina A&T State University, 27411, Greensboro, NC, USA aut NATIONALLICENCE 700 1- Ajinola Stephen Mechanical Engineering, North Carolina A&T State University, 27411, Greensboro, NC, USA aut NATIONALLICENCE 773 0- Journal of Porous Materials Springer US; http://www.springer-ny.com 22/4(2015-08-01), 989-995 1380-2224 22:4<989 2015 22 10934