Metallographicobservationofreduced-scaleadvancedEPW

afterhigh-speedpenetration

HE Li-ling; CHEN Xiao-wei; FAN Ying

doi:10.11883/1001-1455(2012)05-0515-08

Volume 32 Issue 5

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HE Li-ling, CHEN Xiao-wei, FAN Ying. Metallographicobservationofreduced-scaleadvancedEPWafterhigh-speedpenetration[J]. Explosion And Shock Waves, 2012, 32(5): 515-522. doi: 10.11883/1001-1455(2012)05-0515-08

Citation:

HE Li-ling, CHEN Xiao-wei, FAN Ying. Metallographicobservationofreduced-scaleadvancedEPW afterhigh-speedpenetration[J]. Explosion And Shock Waves, 2012, 32(5): 515-522. doi: 10.11883/1001-1455(2012)05-0515-08

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Metallographicobservationofreduced-scaleadvancedEPW afterhigh-speedpenetration

doi: 10.11883/1001-1455(2012)05-0515-08

1.
InstituteofStructuralMechanics,ChinaAcademyofEngineeringPhysics,

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Corresponding author: CHEN Xiao-wei
Publish Date: 2012-09-25

Abstract

Abstract

Inordertoenhancethestructuralstabilityofearthpenetrationwarhead (EPW)inhighspeedpenetration, theadvancedEPW wasdesigned.Theperformanceofthereduced-scaleadvanced EPW wasexperimentallystudiedduringthestrikingvelocitybetween1130~1650m/s.Theresidual projectileswerestudiedbymetallography.Itisfoundthattheheataffectedzone(HAZ)isdistributed aroundtheprojectilesurfacewheretheprojectileandtargetcontact,includingtheprojectilenoseand shank.ThereisnosignificantHAZintheareawheretheprojectileandtargetoffcontact.ItisconcludedthattheinteractionbetweentargetandprojectilebringsHAZin. Ontheotherhand,thereare severaladiabaticshearingbands(ASBs)distributedattheprojectilenosetip.AlthoughASBhaspositivecontributiontotheprojectilemassloss, theinfluencecanbeneglectedduringtheexperimental strikingvelocityrangeduetotherarenumberofASBandthelimiteddistributionarea.However, ASBmayleadtothenonsymmetricalabrasionofpenetratorandthendecreasetheperformanceofprojectileathigherpenetrationvelocity.
- mechanicsofexplosion,
- high-speedpenetration,
- advancedreduced-scaleEPW,
- heataffectedzone,
- adiabaticshearingband,
- metallographicobservation