太赫兹科学与电子信息学报
太赫玆科學與電子信息學報
태혁자과학여전자신식학보
Information and Electronic Engineering
2014年
5期
775-778
,共4页
爆轰%接触测量%非接触测量%电探针%任意反射表面的速度干涉仪
爆轟%接觸測量%非接觸測量%電探針%任意反射錶麵的速度榦涉儀
폭굉%접촉측량%비접촉측량%전탐침%임의반사표면적속도간섭의
detonation%contact measurement%non-contact measurement%electric probe%Velocity Interferometer System for any Reflector
以爆轰实验中常用的电探针测试系统和激光干涉测速系统为例，研究接触测量与非接触测量对爆轰实验测试结果的影响。在平面爆轰波驱动金属飞片实验中，利用电探针测试飞片到达固定位置处的时刻，同时利用 VISAR 测试飞片飞行速度历史，对两者的测试数据进行对比分析，结果表明：光杆探针与卷筒探针的第一台阶测试结果一致，卷筒探针的第二台阶由于飞溅物等原因，比光杆探针提前导通约0.1μs；3个层面的光杆探针测试结果与任意反射表面的速度干涉仪(VISAR)测试结果一致。分析认为，在爆轰实验中，由于被测物体处于高温高压状态，且运动速度很快，接触测量产生的测力也将随之加大，在固定点位置，接触测量将对飞片上此点的后期运动产生明显影响；对于被测飞片的整体运动，由于电探针尺寸重量等远小于飞片，接触测量在固定点造成的影响对整个飞片来讲可以忽略不计，因此得到与非接触测量一致的测试结果。
以爆轟實驗中常用的電探針測試繫統和激光榦涉測速繫統為例，研究接觸測量與非接觸測量對爆轟實驗測試結果的影響。在平麵爆轟波驅動金屬飛片實驗中，利用電探針測試飛片到達固定位置處的時刻，同時利用 VISAR 測試飛片飛行速度歷史，對兩者的測試數據進行對比分析，結果錶明：光桿探針與捲筒探針的第一檯階測試結果一緻，捲筒探針的第二檯階由于飛濺物等原因，比光桿探針提前導通約0.1μs；3箇層麵的光桿探針測試結果與任意反射錶麵的速度榦涉儀(VISAR)測試結果一緻。分析認為，在爆轟實驗中，由于被測物體處于高溫高壓狀態，且運動速度很快，接觸測量產生的測力也將隨之加大，在固定點位置，接觸測量將對飛片上此點的後期運動產生明顯影響；對于被測飛片的整體運動，由于電探針呎吋重量等遠小于飛片，接觸測量在固定點造成的影響對整箇飛片來講可以忽略不計，因此得到與非接觸測量一緻的測試結果。
이폭굉실험중상용적전탐침측시계통화격광간섭측속계통위례，연구접촉측량여비접촉측량대폭굉실험측시결과적영향。재평면폭굉파구동금속비편실험중，이용전탐침측시비편도체고정위치처적시각，동시이용 VISAR 측시비편비행속도역사，대량자적측시수거진행대비분석，결과표명：광간탐침여권통탐침적제일태계측시결과일치，권통탐침적제이태계유우비천물등원인，비광간탐침제전도통약0.1μs；3개층면적광간탐침측시결과여임의반사표면적속도간섭의(VISAR)측시결과일치。분석인위，재폭굉실험중，유우피측물체처우고온고압상태，차운동속도흔쾌，접촉측양산생적측력야장수지가대，재고정점위치，접촉측량장대비편상차점적후기운동산생명현영향；대우피측비편적정체운동，유우전탐침척촌중량등원소우비편，접촉측량재고정점조성적영향대정개비편래강가이홀략불계，인차득도여비접촉측량일치적측시결과。
The influence of contact measurement and non-contact measurement on experiment results is studied by adopting electric probe and Velocity Interferometer System for any Reflector(VISAR) which are general measurement instruments in detonation experiment. The time when the metal flyer driven by plane detonation wave is reaching some point is measured by electric probes. Simultaneously, the free-surface velocity and displacement of the metal flyer are measured by VISAR for contrasting with electric probes. Experiment results show that the first stage probe of the ladder electric probe is coincident well with the single electric probe; the second stage probe of the ladder electric probe is conducted in advance by the sputtering objects, and it is earlier by about 0.1μs than the single electric probe. Experiment results measured by the single electric probe are coincident well with VISAR. The analysis indicates that, in a detonation experiment, the measured object is in hyperthermia and high pressure state with big velocity, and the measuring force increases in consequence; at the fixed point position on a flyer, the contact measurement would have a visible effect on later movement of that point, whereas this effect may be completely ignored with regard to the whole movement of the flyer, because the weight of electric probe is far less than that of the metal flyer; therefore, the results measured by contact measurement and non-contact measurement are coincident well.
