Mechanical characterization of highly porous inorganic solids materials by instrumented micro-indentation

被引：35

作者：

Clement, P. ^{[1
]}

Meille, S. ^{[1
]}

Chevalier, J. ^{[1
,2
]}

Olagnon, C. ^{[1
]}

机构：

[1] Univ Lyon, INSA Lyon, CNRS, UMR 5510, F-69621 Villeurbanne, France

[2] Inst Univ France, F-75005 Paris, France

来源：

ACTA MATERIALIA | 2013年 / 61卷 / 18期

关键词：

Inorganic solids; Porous material; Indentation and hardness; Finite elements; Inverse analysis; HERTZIAN CONTACT DAMAGE; SPHERICAL INDENTATION; CELLULAR MATERIALS; INTERNAL-FRICTION; FAILURE SURFACES; MULTIAXIAL LOADS; THIN-FILMS; BEHAVIOR; MODEL; HARDNESS;

D O I：

10.1016/j.actamat.2013.07.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study focuses on the mechanical characterization of highly porous inorganic solids through spherical micro-indentation. The mechanical properties of a porous plaster, used here as a model material, at two different porosity ratios (30 and 60 vol.%) were determined using analytical methods and numerical simulation. The Young's modulus, hardness, contact stress strain curves and parameters associated with the Drucker Prager yield criterion (cohesion, friction and dilatancy) were determined through an inverse method. Porous inorganic solids show a specific mechanical behaviour, with densification of the indented area promoted by the amount of porosity, without initiation of macroscopic brittle cracks. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：6649 / 6660

页数：12

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