A novel technique to generate sharp cracks in metallic/ceramic functionally graded materials by reverse 4-point bending

被引：24

作者：

Carpenter, RD ^{[1
]}

Paulino, GH

Munir, ZA

Gibeling, JC

机构：

[1] Univ Calif Davis, Dept Mat Sci & Chem Engn, Davis, CA 95616 USA

[2] Univ Illinois, Dept Civil & Environm Engn, Urbana, IL 61801 USA

来源：

SCRIPTA MATERIALIA | 2000年 / 43卷 / 06期

基金：

美国国家科学基金会;

关键词：

functionally graded materials (FGM); fracture and fracture toughness; metals; structural ceramics; precracks;

D O I：

10.1016/S1359-6462(00)00433-4

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Precracking methods applicable to homogeneous metal and ceramic composite materials are not appropriate for functionally graded materials (FGMs). A novel reverse 4-point bending method that allows to develop controlled, sharp, short precrack at the machined notch in metallic/ceramic FGM beams allowing accurate J-R measurements is presented. This method can be used in fatigue or monotonic loading.

引用

页码：547 / 552

页数：6

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