无损检测技术在平遥古城墙保护中的应用

简要介绍了在世界文化遗产平遥古城墙保护中采用的多项无损检测新技术。指出采用无损检测新技术在文物古建筑保护中具有良好的社会效益和经济效益。期望加强文物古建筑保护领域无损检测新技术的研究和技术交流、注重大力推广应用。     

无损检测及分析技术在文物保护领域中的应用

综述了文物保护领域中无损检测技术的应用现状,分类对照了在文物保护领域中应用的常见无损检测分析技术的特点,展望了无损检测分析在文物保护领域的发展前景.     

红外热成像技术在无损检测中的应用

本文介绍了红外热成像技术的工作原理、红外热像仪的构成以及红外热成像技术在无损检测中的应用，并给出了一个用红外热成像技术进行无损检测的例子。结果表明红外热成像技术可以有效地实现对设备的温度监测和分析，提供了一种很有发展前途的无损检测手段。     

无损检测技术在海洋工程中的应用

由于海上能源开发的需要,海洋工程的装备制造已经成为国内各大船厂相互竞争的热门项目。主要介绍了无损检测技术在海洋工程项目中的应用现状,分析了海洋工程无损检测项目在结构形式、材质、检测标准、检测人员与常规修造船无损检测的区别,以及无损检测新技术在海洋工程项目中的应用及无损检测技术在海洋工程项目中的发展趋势。     

激光轮廓测量技术在无损检测中的应用

介绍激光轮廓测量的工作原理、测量装置、主要特点及应用。     

立体视觉在航空发动机无损检测中的应用

内窥检测技术在航空发动机故障诊断实际工作中有着广泛的应用。针对传统内窥技术存在的无法定量测量和检测可达性差等弱点，将主体视觉技术与内窥技术相融合，从硬件和软件两方面入手，研制开发出一套新型的基于立体视觉的航空发动机内窥图像分析系统，实现了图像显示、深度测量和三维重建等创新性功能。该系统的开发促进了面向可靠性维修(RCM)的航空发动机无损评价(NDE)技术的发展，对提高发动机故障诊断和预测水平具有显著的意义。     

无损检测文化概论

认为无损检测技术具有丰厚的历史底蕴和深刻的文化内涵；无损检测文化体现一种技艺精湛和品质优良完美统一的质量理念。“21世纪是质量的世纪，质量将成为新世纪的主题”，无损检测技术作为“质量卫士”，在现代化大工业生产中将会发挥越来越大的作用。     

无损检测技术发展在航空装备修理中的应用

无损检测是空军航空装备修理的重要手段，是提高航空装备修理质量，保证飞行安全起着至关重要的作用。本文从飞机设计思想和理论基础的演变，航空维修的基本概念，介绍了当前无损检测技术发展现状及其在航空装备修理中的应用。     

无损探伤技术在钢结构检测中的应用探讨

钢结构是目前基建工程建设中常用的结构,具有强度高、稳定性强、加固耐用等特点,为了确保钢结构施工的质量,避免焊接裂缝、腐蚀等质量缺陷,在钢结构施工后必须要进行严格的检测,无损探伤技术是钢结构检测中的常用技术,随着科技的不断发展,无损检测技术的检测速度更快,准确性更高,其检测结果具有较强的可靠性,可以为钢结构工程的质检提供依据。本文通过探讨无损探伤技术在钢结构检测中的应用措施,为相关工作的开展提供参考。     

无损检测技术在球罐工程质量监督中的应用

无损检测是对球罐工程质量进行监督控制和诊断的重要手段,是石油化工工程质量监督一项非常重要的工作。叙述了无损检测技术在球罐工程质量监督中的应用情况,并结合工程中常见的400m3球罐为实例,提出了在工程质量监督过程中,使用的各种无损检测技术及其具体操作工序或检测部位和步骤等。     

基于PC的超声自动扫描控制系统

介绍了五轴超声无损检测自动扫描系统的工作原理,并详细介绍了其控制系统的硬件配置和软件组成,该系统能够控制机械装置带动探头实现对复杂曲面的自动扫描。     

Monitoring of polymeric membrane fouling in hollow fiber module using ultrasonic nondestructive testing

This study describes the development of novel protocols extending the real-time ultrasonic reflectometry（UTDR） for the detection of membrane fouling in hollow fiber module during ultrafiltration（UF） of oily water treatment. A specially designed acoustic sensor with a frequency of 2.5 MHz was used. The hollow fiber membranes used were polysulphone（PSf） UF membranes with MWCO 40 kDa. The wastewaters with three different oily concentrations of 100, 500 and 1 000 mg/L were investigated. Diesel oil was utilized as the primary foulant. The results show that the permeate flux declines with operation time and its value becomes lower with the increase of the oily concentration in wastewater. It is found that ultrasonic measurement can detect the fouling and cleaning processes. A new signal analysis protocol-ultrasonic reflected energy was developed. Ultrasonic reflected energy obtained indicates the deposition of oily layer as a function of operation time and its removal after cleaning. The overall flux decline is reasonably correlated with the changes in ultrasonic reflected energy. This research provides the evidence that the ultrasonic reflectometry technique is capable of monitoring membrane fouling and cleaning in hollow fiber modules.     

Development and application of WGQ type micro-computer-based electromagnetic nondestructive testing instrument for quality of metal material

1　ＩＮＴＲＯＤＵＣＴＩＯＮＳｉｎｃｅ 1 979,ｏｕｒｅｌｅｃｔｒｏｍａｇｎｅｔｉｃｎｏｎｄｅｓｔｒｕｃｔｉｖｅｔｅｓｔｉｎｇｒｅｓｅａｒｃｈｇｒｏｕｐｈａｓｄｅｖｅｌｏｐｅｄａｓｅｒｉｅｓｏｆａｕｔｏｍａｔ ｉｃｓｅｐａｒａｔｏｒｆｏｒｍｅｔａｌｍａｔｅｒｉ     

DR检测技术在空调零部件焊接领域的应用

主要采用数字射线(DR)检测技术对空调各焊接零部件进行了检测。检测结果表明,采用DR检测技术可实现对空调各部件的有效检测,特别是针对截面变化较大的黄铜和紫铜异种材料焊接部件,可实现焊缝质量的准确判断;相较于之前人工解剖的破坏性检测方法,采用DR检测技术降低了员工的劳动强度避免了成本浪费,极大地提高了生产效率且保证了产品质量。     

Application of neuro-fuzzy techniques in oil pipeline ultrasonic nondestructive testing

This paper presents a novel approach to the problem of nondestructive pipeline testing using ultrasonic imaging. The identification of the flaw type and its dimensions are the most important problems in the pipeline inspection. Unlike typical methods, a decision based neural network is used for the detection of flaws. We train a generalized regression neural network to determine the dimensions of the corrosions and generate the whole image of both the internal and external walls of the oil pipeline. As an improvement to the detection algorithm, we introduce fuzzy decision-based neural network algorithms for the detection and classification of the corrosions. The simulation and experimental systems results show that these new methods outperform the existing methods.     

无损检测技术在城市公共安全领域的应用

随着我国城市化进程的不断推进,城市人口数量及基础设施的规模越来越大,灾害事故频发,城市公共安全成为突出的问题.无损检测技术具有非破坏性,其可以在不破坏基本结构的前提下对各类承灾载体进行安全检测,被广泛应用于城市公共安全领域.简要介绍了无损检测技术的概念、方法、发展现状,详细阐述了各类无损检测方法在事故灾难、自然灾害等公...     

Detection of thermally grown oxides in thermal barrier coatings by nondestructive evaluation

The thermal-barrier coatings (TBC) sprayed on hot-section components of aircraft turbine engines commonly consist of a partially stabilized zirconia top-coat and an intermediate bond-coat applied on the metallic substrate. The bond-coat is made of an aluminide alloy that at high engine temperatures forms thermally grown oxides (TGO). Although formation of a thin layer of aluminum oxide at the interface between the ceramic top-coat and the bond-coat has the beneficial effect of protecting the metallic substrate from hot gases, oxide formation at splat boundaries or pores within the bond-coat is a source of weakness. In this study, plasma-sprayed TBC specimens are manufactured from two types of bond-coat powders and exposed to elevated temperatures to form oxides at the ceramic-bond-coat boundary and within the bond-coat. The specimens are then tested using nondestructive evaluation (NDE) and destructive metallography and compared with the as-manufactured samples. The objective is to determine if NDE can identify the oxidation within the bond-coat and give indication of its severity. While ultrasonic testing can provide some indication of the degree of bond-coat oxidation, the eddy current (EC) technique clearly identifies severe oxide formation within the bond-coat. Imaging of the EC signals as the function of probe location provides information on the spatial variations in the degree of oxidation, and thereby identifies which components or areas are prone to premature damage.     

从第15届世界无损检测会议看土木工程无损检测的进展

简要介绍国外土木工程无损检测的进展，包括超声仪器发展、冲击回波法研究，空气耦合超声检测，混凝土裂缝检测以及高强度混凝土检测等。     

无损检测技术在焊接裂纹检测中的应用

介绍了磁粉检测、渗透检测、涡流检测、射线检测和超声波检测技术在焊接裂纹检测中的应用状况。对红外热成像检测、激光全息检测和微波检测新技术在焊接裂纹检测中的应用进行了展望。