厚壁管超声无损检测软件开发与关键技术

发布时间：2018-01-22 20:08

本文关键词： 软件厚壁管超声检测　出处：《北京理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：软件是无损检测系统的核心,首先,软件起到控制作用,能够保证检测效率和准确性;同时,软件是人机交互接口,是将用户需求转换成系统功能的桥梁,可以说软件直接决定了系统的功能与性能。实现自动化、智能化无损检测是当前无损加检测软件发展趋势,本文面向厚壁管超声无损检测技术难题,依据课题组目前厚壁管无损检测方法和无损检测硬件装置,针对厚壁管超声无损检测特殊性,设计与开发一款适用与工厂多通道、自动化、智能化的检测软件,实现厚径管无损检测。本文中软件为了保证数据管理逻辑性和互换性,采用分层设计思想,厚壁管超声无损检测软件按照界面层、数据层、设备层和通讯层进行划分,使软件功能层次清晰、数据管理方便。同时,软件为实现多通道管材超声自动无损检测,实现超声无损检测参数设置、机械结构调整运动、超声无损检测扫查功能设置、A扫图形显示和扫查条形图显示功能,并在检测试验中得到验证,能够扫查检测到0.8mm×2mm、0.8mm×3mm的体积型缺陷,10mm×0.2mm×0.5mm的内表面横向缺陷、外表面横向缺陷、内表面纵向缺陷、外表面横向缺陷。本文对多通道收发仪采集到的大量数据传输与显示遇到的问题,进行基于Socket的多通道大量数据传输与显示研究,1)采用多线程方式通讯避免消息堵塞带来的卡死问题;2)采用累积上传与分频上传的方式实现大量数据传输;3)采用缩率图和双DC绘图方式,保证图像显示效率和质量,经过检测试验验证,能够实现厚壁管检测过程12个通道采集数据大量数据传输与显示。为了实现软件智能化检测,设计了适合工厂管理的人员管理功能和管材管理功能,赋予不同类型人员不同软件功能权限,同时,在数据库中保存管材信息、超声收发仪参数、扫查参数,当操作人员选择管材后,无需设置参数,直接进入扫查界面,实现智能化检测。针对检测过程中难以找到最优偏心距的问题,设计基于能量数学模型优化偏心距方法,通过在介质分界层超声波能量变化规律和端角反射过程能量变化规律,计算出能量和偏心距数学模型,用于估计最优偏心距。针对厚壁管检测过程中,超声波波型复杂,检测参数计算难得问题,设计了声线仿真的图像化管材零件检测辅助软件,辅助软件能够预估检测参数、仿真声波传播路径、计算超声波回波声时,实现了检测参数设计方面的智能化。三维显示符合检测软件智能化的发展趋势,本文对管材三维显示方法进行研究,基于OpenGL实现一种管材缺陷显示方法,能够使检测结果更直观,简化检测人员建模过程。
[Abstract]:The software is the core of the NDT system. Firstly, the software plays a controlling role to ensure the efficiency and accuracy of the detection. At the same time, the software is the interface of man-machine interaction and the bridge to convert the user's demand into the system's function. It can be said that the software directly determines the function and performance of the system, and realizes the automation. Intelligent nondestructive testing (NDT) is the development trend of NDT software at present. In this paper, aiming at the technical problems of ultrasonic NDT of thick wall tube, according to the current NDT method and hardware device of NDT. In view of the particularity of ultrasonic nondestructive testing of thick wall tubes, a kind of automatic and intelligent testing software is designed and developed, which is suitable for multi-channel, automatic and intelligent inspection in factories. In order to ensure the logicality and interchangeability of data management, the software adopts the idea of layered design, and the software of ultrasonic nondestructive testing of thick wall pipe is in accordance with the interface layer and data layer. The equipment layer and communication layer are divided to make the software function level clear and data management convenient. At the same time, the software realizes the automatic ultrasonic nondestructive testing of multi-channel pipe and the setting of ultrasonic nondestructive testing parameters. The mechanical structure adjusts the movement, the ultrasonic nondestructive testing scanning function sets up the A scan graph display and the scan bar chart display function, and is verified in the inspection test, can scan to detect 0.8 mm 脳 2 mm. The volume defect of 0.8mm 脳 3mm is 10mm 脳 0.2mm 脳 0.5mm in transverse defect, transverse defect in outer surface and longitudinal defect in inner surface. The problem of large amount of data transmission and display collected by multi-channel transceiver is studied in this paper based on Socket. 1) Multi-thread communication is adopted to avoid the problem of jam caused by message clogging; 2) A large amount of data transmission is realized by means of cumulative upload and frequency division upload. 3) the efficiency and quality of image display are ensured by using shrinkage graph and double DC drawing method, which are verified by testing and testing. In order to realize the data transmission and display of 12 channels in the thick wall tube inspection process, the personnel management function and the pipe management function suitable for the factory management are designed in order to realize the intelligent detection of the software. At the same time, save the pipe information in the database, ultrasonic transceiver parameters, sweep parameters, when the operator chooses the pipe material, the parameters need not be set. Aiming at the problem that it is difficult to find the optimal eccentricity in the detection process, an energy mathematical model is designed to optimize the eccentricity. The mathematical model of energy and eccentricity is calculated by the law of ultrasonic energy variation in dielectric boundary layer and the law of energy change in end-to-angle reflection process, which can be used to estimate the optimal eccentricity. The ultrasonic wave shape is complex and the calculation of the detection parameters is difficult. A sound line simulation software is designed to simulate the acoustic wave propagation path. The software can predict the detection parameters and simulate the sound wave propagation path. When the ultrasonic echo is calculated, the intelligent design of the testing parameters is realized. The 3D display accords with the development trend of the intelligent testing software. In this paper, the three-dimensional display method of the pipe is studied. A tube defect display method based on OpenGL can make the test results more intuitive and simplify the modeling process.
【学位授予单位】：北京理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TH878.2

【参考文献】