According to its on - line , dynamic , rapid and economic characteristic , acoustics testing is a new dynamic nondestructive test method which can ensure valves safety , provide evidence for maintain project , debase to replace expenditure 声发射检测技术作为一种新兴的动态无损检测技术，具有在线、动态及快速、经济的特点，既保证了阀门的安全使用，又可为维修决策提供依据，降低了更换费用。
Acousto ultrasonic ( au ) is a new dynamic non - destructive evaluation method . it can provide the detailed information about the materials by analyzing the acquired signals that have passed through defects , failures or damages of structure 声-超声技术是一种新兴的动态无损检测技术，这种检测方法主要原理是通过分析采集到的通过材料内部有缺陷、有损伤或失效部位后的调制声信号，来提供有关材料部位的详细信息。
The soil - cement walls have got more and more application in the civil and hydraulic engineering , but it is very difficult to detect its quality , so it is very important to develop a non - destructive detecting method , which can determine the quality accurately 摘要水泥土搅拌墙强度检测是其质量控制的重要手段，以往采用钻芯取样等手段进行检测，但是因扰动等原因，效果往往不甚理想，因此发展无损检测技术是非常必要的。
Eddy - current sensor test technology is a kind of very popular untouched nondestructive test technology developed in last decades , which makes up five major modern nondestructive test technologies together with magnetic particle test , radial test , ultrasonic test and osmosis test 电涡流传感器检测技术是近年来应用较广泛的一种无损检测方法，它同磁粉检测、超声波检测、射线检测和渗透检测统称为五大无损检测技术。
Believe in that this kind of no damage concrete test technology will be adopted cosmically to improving engineering quality effectively by sustaining test data accumulate of various region , perfecting various grade intension test curve and improving nicety of test result 笔者深信，经过不同地区试验数据的积累，可以不断完善各级测强曲线，提高测试结果的准确度，使得混凝土无损检测技术将在有效提高工程质量上得到更大规模应用。
Eddy - current sensor test technology is a kind of very popular untouched nondestructive test technology developed in last decades , which makes up five major modern nondestructive test technologies together with magnetic particle test , radial test , ultrasonic test and osmosis test 电涡流传感器检测技术是近年来发展起来的很受欢迎的一种非接触无损检测技术，它同磁粉检测、超声波检测、射线检测和渗透检测一起构成了现代的五大无损检测技术。
So far , ict has been broadly applicable to various high - tech fields , including aeronautics and astronautics , military industry , shipbuilding , precision instrument , oil reconnaissance , metallurgy and mechanism manufacture , and so on . ict is considered the best non - destructive testing technology 目前为止，工业ct被认为是最佳无损检测技术，它已广泛应用于航空航天、兵工、造船工业、精密仪器制造、石油勘测、冶金以及机械制造等各个高科技领域。
Nondestructive testing ( ndt ) techniques used in material inspection , fabrication inspection and inservice inspection of pressure vessels are reviewed including ultrasonic , radiographic , magnetic particle , penetrant , eddy current , acoustic emission , infrared , magnetic flux leakage and magnetic memory techniques 摘要综述压力容器原材料、压力容器制造和使用过程中采用的无损检测技术，包括笤声、射线、磁粉、渗透、涡流、声发射、红外线、漏磁和磁记忆检测技术。
This paper introduced the application of nondestructive testing technology in equipment testing and the development of modem nondestructive testing technology , especially introduced the method of infrared ray imaging , ultrasonic testing technique , eddy - current method and their advantage and disadvantage , application fields were also mentioned 本文介绍了无损检测技术在装备检测中的作用，以及现代无损检测技术的发展，介绍了红外热成像法、超声检测法、涡流法和磁检测法在无损检测中的应用，并阐明了各种方法的优劣及适用领域。
Therefore , the old inspection methods of thickness quality , such as bore and sampling , ca n ' t satisfy the developing requirement , not only for their low efficiency , bad representation , poor accuracy , but also for their destruction to the built highway . so , the non destructive testing with simple operation , high accuracy and efficiency , need rapid developments 原有的钻芯取样或开挖抽样的厚度质量检查方法不仅效率低，代表性差，精度不高，而且对已建成的公路有损坏，已经满足不了发展的需要，为此极需发展快速、简便、高精度、高效率的公路无损检测技术。
