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对材料和结构缺陷的无损检测(NDT)已经历了50多年的进化演变。在美国,它已经从一个要求零缺陷的检测策略(NDT),向基于损伤可容度设计的检测和评估技术(NDE)过渡。这里是假设部件始终包含一个缺陷,只有那些比断裂力学确定的临界尺寸更大时,需要通过检查将其消除,以重新确定产品的服务周期。介绍了这些因素对于推动模式转变及转换至定量无损检测方面起到的至关重要的作用。一系列的重大研究项目被启动,用于更新无损检测以满足新的要求。重点介绍了在第一项目发展中的研究重点,以及用于定量缺陷定义的DARPA/AFML跨学科项目。它有三个目的:发展新的核心科学/人员基础,使检测技术满足新的要求,确立发展新的领域,即适当的工程设备的阶段,并继续开展定量无损检测(QNDE)系列会议。从这个和其他方案的进展已导致对所涉及的任何检查和技术的各项测量的基本模型的链接为基础的定量无损评价(QNDE)的科学核心。除了讨论这些模式和它们的联系,还将定义核心结构。利用这些模型,一种新的强大的工程工具集已经开发,包括UT,RT和EC技术的模拟程序。这些工具的应用将成为亮点,在包括结构健康监测和状态检修的工作中将令人注目。最后,讨论了QNDE未来机会、远景和方向。
Nondestructive testing (NDT) of material and structural defects has evolved over 50 years. In the United States, it has transitioned from a zero-defect detection strategy (NDT) to a detection and evaluation technique (NDE) based on damage-tolerant design. Here it is assumed that the part always contains a defect that only needs to be checked to eliminate it if it is larger than the critical dimension determined by fracture mechanics to re-determine the service life of the product. These factors are introduced to play a crucial role in driving the paradigm shift and switching to quantitative NDT. A series of major research projects were launched to update NDT to meet new requirements. It highlights the research priorities in Project One Development and the DARPA / AFML Interdisciplinary Project for Quantitative Deficiencies Definition. It serves three purposes: developing a new core science / personnel base, enabling detection technology to meet new requirements, establishing phases for the development of new fields, the appropriate engineering equipment, and continuing the QNDE series of meetings. The progress made from this and other programs has led to the scientific core of Quantitative Non-Destructive Evaluation (QNDE) based on the link to the basic model of any measurement and technique involved. In addition to discussing these patterns and their relationships, the core structure will also be defined. Using these models, a new and powerful set of engineering tools has been developed, including simulation programs for UT, RT, and EC technologies. The use of these tools will be a highlight and will be notable in the work that includes structural health monitoring and condition overhaul. Finally, we discuss QNDE’s future opportunities, prospects and directions.