Geometrical characterization of perlite-metal syntactic foam

被引：19

作者：

Borovinsek, Matej ^{[1
]}

Taherishargh, Mehdi ^{[2
]}

Vesenjak, Matej ^{[3
]}

Ren, Zoran ^{[3
]}

Fiedler, Thomas ^{[2
]}

机构：

[1] Univ Maribor, Fac Mech Engn, Smetanova Ulica 17, SLO-2000 Maribor, Slovenia

[2] Univ Newcastle, Sch Engn, Univ Dr, Callaghan, NSW 2308, Australia

[3] Univ Maribor, Fac Mech Engn, Smetanova Ulica 17, SLO-2000 Maribor, Slovenia

来源：

MATERIALS CHARACTERIZATION | 2016年 / 119卷

关键词：

Porous materials; Infiltration casting; Micro-computed tomography; Image analysis; Gaussian curvature; k-NN classification; X-RAY; MECHANICAL-BEHAVIOR; ELEMENTS; DENSITY; SHAPE;

D O I：

10.1016/j.matchar.2016.07.024

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper introduces an improved method for the detailed geometrical characterization of perlite-metal syntactic foam. This novel metallic foam is created by infiltrating a packed bed of expanded perlite particles with liquid aluminium alloy. The geometry of the solidified metal is thus defined by the perlite particle shape, size and morphology. The method is based on a segmented micro-computed tomography data and allows for automated determination of the distributions of pore size, sphericity, orientation and location. The pore (i.e. particle) size distribution and pore orientation is determined by a multi-criteria k-nearest neighbour algorithm for pore identification. The results indicate a weak density gradient parallel to the casting direction and a slight preference of particle orientation perpendicular to the casting direction. (C) 2016 Elsevier Inc. All rights reserved.

引用

页码：209 / 215

页数：7

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