1.1 本指南涵盖了相控阵超声检测仪器和系统的一些性能特性评估程序。 1.2 这些特性的评估旨在用于比较仪器和系统，或者通过定期重复，用于检测给定仪器或系统特性的长期变化。重大变化可能表明即将发生故障，如果超出某些限制，则需要进行纠正性维护。相控阵单元中的一些电子仪器特性类似于非相控阵单元，可以按照实践中的描述进行测量 E1065 或指南 E1324 。 1.3 可以评估使用脉冲波列和A扫描呈现（rf或视频）的超声检查系统。 1.4 本指南没有规定考试系统的性能限制；如果需要此类验收标准，则应由使用方规定。 在此处隐含验收标准的情况下，这些标准仅为示例，并或多或少受到客户和最终用户控制文件的限制。 1.5 待评估的具体参数、条件、测试频率和所需的报告数据应由用户确定。 1.6 本指南可用于评估完整的检查系统，包括搜索单元、仪器、互连、扫描仪固定装置、连接的报警器和辅助设备。本指南不用于替代仪器或系统的校准或标准化，以检查任何给定材料。 1.7 除了待评估的仪器或系统外，所需的测试设备还包括选定的测试块和位置编码器。 1.8 替代程序，如本文件中描述的示例或其他程序，只能在获得客户批准的情况下使用。 1.9 以国际单位制表示的数值应视为标准。本标准中不包括其他计量单位。 1.10 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.11 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ===意义和用途====== 5.1 本指南旨在评估相控阵探头和仪器组合的性能评估。 其目的不是定义性能和验收标准，而是提供可用于建立此类标准的数据。 5.2 本指南中描述的推荐程序旨在提供性能相关的测量，这些测量可以在指定的测试条件下使用简单目标和相控阵测试系统本身进行复制。它适用于在1 MHz至20 MHz标称频率范围内运行的相控阵探伤仪器，但该程序适用于使用明显更高频率分量的仪器上的测量。 5.3 本指南不适用于可获得制造商说明的电路的维修校准或维护。 5.4 具体评估的实施可能需要使用设施格式的更详细的程序说明。 5.5 本指南的用户可以使用所获得的测量数据来指定、描述或提供采购和质量保证的性能标准，或对分阶段运行特性的服务评估- 阵列系统。 5.6 并非本指南中描述的所有评估都适用于所有系统。指南的全部或部分可以由用户决定使用。

1.1 This guide covers procedures for evaluating some performance characteristics of phased-array ultrasonic examination instruments and systems. 1.2 Evaluation of these characteristics is intended to be used for either comparing instruments and systems or, by periodic repetition, for detecting long-term changes in the characteristics of a given instrument or system. Significant changes may be indicative of impending failure, and, if beyond certain limits, will require corrective maintenance. Some electronic instrument characteristics in phased-array units are similar to non-phased-array units and may be measured as described in Practice E1065 or Guide E1324 . 1.3 Ultrasonic examination systems using pulsed-wave trains and A-scan presentation (rf or video) may be evaluated. 1.4 This guide establishes no performance limits for examination systems; if such acceptance criteria are required, these shall be specified by the using parties. Where acceptance criteria are implied herein, they are for example only and are subject to more or less restrictive limits imposed by customer’s and end user’s controlling documents. 1.5 The specific parameters to be evaluated, conditions, frequency of test, and report data required shall be determined by the user. 1.6 This guide may be used for the evaluation of a complete examination system, including search unit, instrument, interconnections, scanner fixtures, connected alarm, and auxiliary devices. This guide is not intended to be used as a substitute for calibration or standardization of an instrument or system to inspect any given material. 1.7 Required test apparatus includes selected test blocks and position encoders in addition to the instrument or system to be evaluated. 1.8 Alternate procedures, such as examples described in this document, or others, may only be used with customer approval. 1.9 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.10 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.11 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 This guide is intended to evaluate performance assessment of combinations of phased-array probes and instruments. It is not intended to define performance and acceptance criteria, but rather to provide data from which such criteria may be established. 5.2 Recommended procedures described in this guide are intended to provide performance-related measurements that can be reproduced under the specified test conditions using simple targets and the phased-array test system itself. It is intended for phased-array flaw detection instruments operating in the nominal frequency range of 1 MHz to 20 MHz, but the procedures are applicable to measurements on instruments utilizing significantly higher frequency components. 5.3 This guide is not intended for service calibration, or maintenance of circuitry for which the manufacturer’s instructions are available. 5.4 Implementation of specific assessments may require more detailed procedural instructions in a format of the using facility. 5.5 The measurement data obtained may be employed by users of this guide to specify, describe, or provide performance criteria for procurement and quality assurance, or service evaluation of the operating characteristics of phased-array systems. 5.6 Not all assessments described in this guide are applicable to all systems. All or portions of the guide may be used as determined by the user.