超声波泥水密度检测影响因素的研究  

Research on Influencing Factors of Mud Density Detection of Ultrasonic Wave

作　　者：姚丽[1] 胡宇[1] 赵海峰[1] 

机构地区：[1]沈阳工业大学,辽宁沈阳110870

出　　处：《计算机仿真》2014年第10期259-262,312,共5页Computer Simulation

摘　　要：针对于优化超声波泥水密度检测准确性的问题,研究了泥水密度检测过程中信号参数和过程参数对检测的影响,信号参数包括超声波发射频率和幅值,过程参数包括泥水的温度和压力。根据超声波与泥水密度之间存在的函数关系,通过研究各因素对超声波衰减率的影响,来间接得知它们对检测的影响。利用有限元分析软件ANSYS仿真了超声波在检测时不同频率、幅值、温度和压力情况下穿过泥水的衰减率,分析了在不同参数的情况下超声波衰减率的变化,并拟合出相应的曲线。仿真结果表明:超声波衰减率与超声波的发射幅值无关,而与超声波发射频率、温度和压力有关,并在实验上验证了温度对超声波衰减率的影响,为水泥密度准确检测提供了依据。For optimization of ultrasonic mud density detection accuracy problem, this paper studied the influence on detection of the signal parameters and process parameters in mud density. The signal parameters include ultrasonic transmitting frequency and amplitude. The process parameters include temperature and pressure of mud. According to the function relationship between ultrasonic and mud density, through studying the influence of various factors on the ultrasonic attenuation, their effect on the detection can be indirectly known. Using the finite element analysis software ANSYS, we simulated the decay rate of ultrasound in the detecting of different frequency, amplitude, temperature and pressure through the attenuation of mud. The changes in ultrasonic attenuation rate were analyzed in different pa- rameters to fit out the corresponding curve. The simulation results show that the ultrasonic attenuation rate has noth- ing to do with the launch of ultrasonic amplitude, which is related to ultrasonic transmission frequency, temperature and pressure..

关 键 词：泥水密度 超声波衰减 有限元仿真 超声波换能器 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]