摘要
二级轻气炮发射管内膛加工质量对动高压物理冲击加载实验数据的准确度有着重要影响。基于全光纤频域干涉测距技术研制的内径测量系统,可精确测量小口径、大长径比二级轻气炮管内径。该系统采用微型光纤探头作为频域干涉测距传感器,能对管内膛被测点坐标进行精密测量,经椭圆方程拟合后可准确获得待测截面内径。对长度为7 400 mm的Φ28 mm型二级轻气炮炮管通体内径进行了测量,结果表明:在入口处、出口处与三点式内径千分尺测量结果的极差仅为0. 014 mm.
The machining quality of two-stage light gas gun bore has asignificant effect on the accuracy of experimental data of shock loading in dynamic high pressure physics research. An inner diameter measuring system based on all-fiber frequency domain interferometry ranging technology is demonstrated,which is used to acquire the accurate inner diameter of bore with small caliber and large length-diameter ratio.The micro fiber-optic probes are used as ranging sensors to precisely measure the coordinates of measuring points in the bore. The inner diameter is calculated by using the elliptic equation to fit the coordinates.The measured result of Φ28 mm bore with a length of 7 400 mm indicates that the most deviation is 0. 014 mm compared to the measured results of three-point inside micrometer.
作者
马鹤立
陶天炯
刘盛刚
王翔
翁继东
MA Heli;TAO Tianjiong;LIU Shenggang;WANG Xiang;WENG Jidong(Laboratory for Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics,Mianyang 621900, Sichuan, China)
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2019年第5期1077-1082,共6页
Acta Armamentarii
基金
中国工程物理研究院流体物理研究所发展基金项目(SFZ20130303)
关键词
滑膛炮管
频域干涉
小口径
内径测量
smooth-bore barrel
frequency domain interferometry
small-caliber
inner diameter measurement