Please use this identifier to cite or link to this item:
Fulltext available Open Access
Publisher DOI: 10.3390/met8040282
Title: Skeletonization, geometrical analysis, and finite element modeling of nanoporous gold based on 3D tomography data
Language: English
Authors: Richert, Claudia 
Huber, Norbert 
Keywords: nano-porous metal;mechanical behavior;3D structural modeling;skeletonization;3D FIB-SEM tomography
Issue Date: 19-Apr-2018
Publisher: MDPI
Source: Metals 4 (8): 282- (2018)
Journal or Series Name: Metals 
Abstract (english): Various modeling approaches simplify and parametrize the complex network structure of nanoporous gold (NPG) for studying the structure–property relationship based on artificially generated structures. This paper presents a computational efficient and versatile finite element method (FEM) beam model that is based on skeletonization and diameter information derived from the original 3D focused ion beam-scanning electron microscope (FIB-SEM) tomography data of NPG. The geometrical skeleton network is thoroughly examined for a better understanding of the NPG structure. A skeleton FEM beam model is derived that can predict the macroscopic mechanical behavior of the material. Comparisons between the mechanical response of this skeleton beam model and a solid FEM model are conducted. Results showed that the biggest-sphere diameter algorithm implemented in the open-source software FIJI, commonly used for geometrical analysis of microstructural data, overestimates the diameter of the curved NPG ligaments. The larger diameters lead to a significant overestimation of macroscopic stiffness and strength by the skeleton FEM beam model. For a parabolic shaped ligament with only 20% variation in its diameter, a factor of more than two was found in stiffness. It is concluded that improved algorithms for image processing are needed that provide accurate diameter information along the ligament axis.
DOI: 10.15480/882.1729
ISSN: 2075-4701
Institute: Keramische Hochleistungswerkstoffe M-9 
Werkstoffphysik und -technologie M-22 
Type: (wissenschaftlicher) Artikel
Project: SFB 986, Teilproject B4 - Mikromechanisches Materialverhalten hierarchischer Werkstoffe 
License: In Copyright In Copyright
Appears in Collections:Publications with fulltext

Files in This Item:
File Description SizeFormat
metals-08-00282.pdfVerlags-PDF6,1 MBAdobe PDFThumbnail
Show full item record

Page view(s)

Last Week
Last month
checked on Sep 21, 2020


checked on Sep 21, 2020

Google ScholarTM


Note about this record


This item is licensed under a Creative Commons License Creative Commons