DIRECT MEASUREMENTS OF DISPLACEMENTS IN THE INNER ROLLER SPAN OF 4-POINT-BENDING CREEP TESTS

被引：0

作者：

FETT, T ^{[1
]}

KELLER, K ^{[1
]}

MARTIN, G ^{[1
]}

ROSENFELDER, O ^{[1
]}

机构：

[1] UNIV KARLSRUHE,INST ZUVERLASSIGKEIT & SCHADENSKUNDE MASCHINENBAU,W-7500 KARLSRUHE,GERMANY

来源：

JOURNAL OF TESTING AND EVALUATION | 1991年 / 19卷 / 04期

关键词：

CREEP; DISPLACEMENT MEASUREMENTS; HOT-PRESSED SILICON NITRIDE; HPSN; AL2O3;

D O I：

暂无

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Creep tests on ceramic materials are often performed in four-point-bending. With conventional procedures of evaluating such tests a number of assumptions must be made to allow the calculation of the displacements in the inner roller span-the range of the constant bending moment-from displacement measurements containing the part between the outer and the inner rollers where the bending moment changes linearly from zero to its maximum value. A test apparatus is described that allows direct measurements in the interesting part of the bending specimen. Creep curves obtained with different methods are compared.

引用

页码：334 / 337

页数：4

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