FracturedamageanalysisofPBX

LI Jun-ling; FU Hua; TAN duo-wang; LU Fang-yun

doi:10.11883/1001-1455(2011)06-0624-06

Volume 31 Issue 6

May 2014

Turn off MathJax

Article Contents

Article Navigation > Explosion And Shock Waves > 2011 > 31(6): 624-629

LI Jun-ling, FU Hua, TAN duo-wang, LU Fang-yun. FracturedamageanalysisofPBX[J]. Explosion And Shock Waves, 2011, 31(6): 624-629. doi: 10.11883/1001-1455(2011)06-0624-06

Citation:

LI Jun-ling, FU Hua, TAN duo-wang, LU Fang-yun. FracturedamageanalysisofPBX[J]. Explosion And Shock Waves, 2011, 31(6): 624-629. doi: 10.11883/1001-1455(2011)06-0624-06

LI Jun-ling, FU Hua, TAN duo-wang, LU Fang-yun. FracturedamageanalysisofPBX[J]. Explosion And Shock Waves, 2011, 31(6): 624-629. doi: 10.11883/1001-1455(2011)06-0624-06

Citation:

LI Jun-ling, FU Hua, TAN duo-wang, LU Fang-yun. FracturedamageanalysisofPBX[J]. Explosion And Shock Waves, 2011, 31(6): 624-629. doi: 10.11883/1001-1455(2011)06-0624-06

PDF( 4214 KB)

FracturedamageanalysisofPBX

doi: 10.11883/1001-1455(2011)06-0624-06

1.
NationalKeyLaboratoryofShock WaveandDetonationPhysics,InstituteofFluidPhysics,
2.
ChinaAcademyofEngineeringPhysics,Mianyang621900,Sichuan,China;

Funds:

NationalNaturalScienceFoundationofChina(10672177,10872215,10902100)

NationalBasicResearchProgramofChina(973Program)(61383)

More Information

Corresponding author: LI Jun-ling
Publish Date: 2011-11-25

Abstract

Abstract

Thequasi-staticBraziliantestwasperformedontheMTSmachinetoinvestigatethetensile fracturemodesofthePBXspecimen.AnopticalpreparationtechniqueforthePBXspecimenwasdevelopedtoobtainmorevividmicrostructurefeaturesunderopticalmicroscopes. Andthedeformation anddamageevolutionsofthespecimenweregainedbyadoptingahigh-speedcameraandthedigital imagecorrelationmethod.ResultsshowthatthetensilestrengthofthePBXislessthan3MPaand itsfailurestrainisconsiderablysmall.Basedontheobservedresults,thetensilefracturemodesofthe PBXexplosivespecimenwereanalyzedbyapplyingtheGriffithfracturecriterionandtheinterface debondingtheory.Analysisrevealsthattheinterfacedebondingcrackwillinitiateintheearlystageof loadandthetransgranularfractureleadstothefailureofthespecimen.Largercrystalsareproneto crackthroughthemselves,andsmalleronescankeepthemselvesfromtrangranularcleavagefracture butonlydebondfromthebinders.
- olidmechanics,
- PBX,
- Braziliantest,
- micro-damageoffracture,
- digitalcorrelationtechnique