A METHOD MEASURING FRACTURE PARAMETERS OF BRITTLE MATERIAL USING U-NOTCHES

Based on two stress criterions( the maximum circumferential stress criterion and average circumferential stress criterion) for U-notches under Mode-I,relationships among the critical notch stress intensity factor,the fracture toughness and the tensile strength were built separately,which follows the...

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Main Authors: LIU XiaoMei, BIAN YongMing, LIANG YongCheng
Format: Article
Language:zho
Published: Editorial Office of Journal of Mechanical Strength 2015-01-01
Series:Jixie qiangdu
Subjects:
Online Access:http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2015.01.007
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author LIU XiaoMei
BIAN YongMing
LIANG YongCheng
author_facet LIU XiaoMei
BIAN YongMing
LIANG YongCheng
author_sort LIU XiaoMei
collection DOAJ
description Based on two stress criterions( the maximum circumferential stress criterion and average circumferential stress criterion) for U-notches under Mode-I,relationships among the critical notch stress intensity factor,the fracture toughness and the tensile strength were built separately,which follows the similar idea of Seweryn regarding the crack as a special U-notch with the notch radius equaling to zero. By means of the critical fracture loadings for U-notched plates under Mode-I and the finite element results of Ansys,a new method has been proposed to measure the fracture toughness and the tensile strength. The three point bending and tensile experiments in related references of PMMA and aluminum alloy specimens with single-edged U-notch and graphite tensile plates with central U-notch were verified. It indicates that the methods are simple and can be applied in engineering because the U notches can be machined conveniently and the fracture load under Mode-I can also be obtained easily.
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institution Kabale University
issn 1001-9669
language zho
publishDate 2015-01-01
publisher Editorial Office of Journal of Mechanical Strength
record_format Article
series Jixie qiangdu
spelling doaj-art-ff0901d4cf7543aea38222b1e0c951712025-01-15T02:39:14ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692015-01-013715415930591058A METHOD MEASURING FRACTURE PARAMETERS OF BRITTLE MATERIAL USING U-NOTCHESLIU XiaoMeiBIAN YongMingLIANG YongChengBased on two stress criterions( the maximum circumferential stress criterion and average circumferential stress criterion) for U-notches under Mode-I,relationships among the critical notch stress intensity factor,the fracture toughness and the tensile strength were built separately,which follows the similar idea of Seweryn regarding the crack as a special U-notch with the notch radius equaling to zero. By means of the critical fracture loadings for U-notched plates under Mode-I and the finite element results of Ansys,a new method has been proposed to measure the fracture toughness and the tensile strength. The three point bending and tensile experiments in related references of PMMA and aluminum alloy specimens with single-edged U-notch and graphite tensile plates with central U-notch were verified. It indicates that the methods are simple and can be applied in engineering because the U notches can be machined conveniently and the fracture load under Mode-I can also be obtained easily.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2015.01.007U-notchBrittle fracture criterionCritical fracture loadingFracture toughnessTensile strength
spellingShingle LIU XiaoMei
BIAN YongMing
LIANG YongCheng
A METHOD MEASURING FRACTURE PARAMETERS OF BRITTLE MATERIAL USING U-NOTCHES
Jixie qiangdu
U-notch
Brittle fracture criterion
Critical fracture loading
Fracture toughness
Tensile strength
title A METHOD MEASURING FRACTURE PARAMETERS OF BRITTLE MATERIAL USING U-NOTCHES
title_full A METHOD MEASURING FRACTURE PARAMETERS OF BRITTLE MATERIAL USING U-NOTCHES
title_fullStr A METHOD MEASURING FRACTURE PARAMETERS OF BRITTLE MATERIAL USING U-NOTCHES
title_full_unstemmed A METHOD MEASURING FRACTURE PARAMETERS OF BRITTLE MATERIAL USING U-NOTCHES
title_short A METHOD MEASURING FRACTURE PARAMETERS OF BRITTLE MATERIAL USING U-NOTCHES
title_sort method measuring fracture parameters of brittle material using u notches
topic U-notch
Brittle fracture criterion
Critical fracture loading
Fracture toughness
Tensile strength
url http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2015.01.007
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AT bianyongming methodmeasuringfractureparametersofbrittlematerialusingunotches
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