Non-linearregressionanalysismethodforvelocityprofileprocessingof

instantaneousdisplacementinterferometer

LI Xue-mei; ZHANG Lin; LI Ying-hua; YU Yu-ying; WANG Xiang; MA Yun

doi:10.11883/1001-1455(2010)01-0080-05

Volume 30 Issue 1

May 2014

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JIN Peng-gang, CHANG Hai, CHEN Zhi-qun. Studies on kinetics and mechanisms of thermal decomposition of 1,1-diamino-2,2-dinitroethylene (FOX-7)[J]. Explosion And Shock Waves, 2006, 26(6): 528-531. doi: 10.11883/1001-1455(2006)06-0528-04

Citation:

LI Xue-mei, ZHANG Lin, LI Ying-hua, YU Yu-ying, WANG Xiang, MA Yun. Non-linearregressionanalysismethodforvelocityprofileprocessingof instantaneousdisplacementinterferometer[J]. Explosion And Shock Waves, 2010, 30(1): 80-84. doi: 10.11883/1001-1455(2010)01-0080-05

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Non-linearregressionanalysismethodforvelocityprofileprocessingof instantaneousdisplacementinterferometer

doi: 10.11883/1001-1455(2010)01-0080-05

1.
NationalKeyLaboratoryofShock WaveandDetonationPhysics,InstituteofFluidPhysics,

Funds:

NationalNaturalScienceFoundationofChina(10802080)

Publish Date: 2010-01-25

Abstract

Abstract

Anewmethodforvelocityprofiledataprocessingofupdatedinstantaneousdisplacementinterferometerisdevelopedinthispaper, whichmainlyaimsattheDPS(displacementpinsystem)in ChinaandPDV (photonDopplervelocimeter)inAmerica.Thismethodisbasedontheideaofrevivifyingmeasuredsignalbynon- linearregressionanalysis(NLRA),andthemainanalyzingprocessis presented.ComparingwiththetraditionalPick-Peaksmethodwhichisbasedondiscretedataprocessingidea, itcanobtainhigheraccuracyforvelocityprofileandhasastrongerabilitytodistinguishits details,especiallywhenitisusedtodealwithelasitc-plasticlowpressureimpactresponseofmaterials. Atlast,thecharacteristicsofthismethodarediscussedindetailbycalculatingthefree-surface velocityprofilesofSnand45steelundergoingalowpressureplanarimpactandmeasuredwithDPS.
- solidmechanics,
- non-linearregressionanalysis,
- instantaneousdisplacementinterferometer,
- velocityprofile