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现行 ASTM F914/F914M-20(2024)
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Standard Test Method for Acoustic Emission for Aerial Personnel Devices Without Supplemental Load Handling Attachments 没有补充负载处理附件的空中人员装置的声发射标准测试方法
发布日期: 2024-09-01
1.1 本测试方法描述了使用声发射(AE)测试对没有补充负载处理附件的空中人员设备进行无损测试的程序。 1.1.1 涵盖的设备- 本试验方法涵盖以下类型的车载绝缘空中人员装置: 1.1.1.1 可延伸吊杆空中人员装置、 1.1.1.2 铰接吊杆空中人员装置,以及 1.1.1.3 任意组合 1.1.1.1 和 1.1.1.2 . 1.1.2 未涵盖的设备- 本试验方法不涵盖以下任何设备: 1.1.2.1 物料搬运空中装置, 1.1.2.2 带平台的挖掘机井架,以及 1.1.2.3 带平台的起重机。 1.2 AE测试方法用于检测和区域定位发射源。发射源的验证可能需要使用其他无损检测(NDT)方法,例如射线照相、超声波、磁粉、液体渗透剂和目视检查。警告- 该试验方法要求对被测车辆的上部结构施加外部载荷。在测试过程中,必须小心保护人员和设备免受车辆或部件意外故障或不稳定的影响。 附注1: 该测试方法不是用于验证航空设备结构完整性的独立无损检测方法。应使用其他无损检测方法来补充结果。 1.3 以SI单位或英寸-磅单位表示的值应单独视为标准值。每个系统中陈述的值不一定完全等同;因此,为确保符合标准,每个系统应独立使用,两个系统的数值不得合并使用。1.4 本标准并不旨在解决与其使用相关的所有安全性问题(如果有)。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践并确定法规限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒(TBT)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 该测试方法提供了一种评估在受控负载下由空中人员设备内的局部源快速释放能量而产生的声发射的方法。所产生的能量释放发生在有意施加受控的预定负载期间。这些能量释放可以由合格的个人监控和解释。 5.2 该测试方法允许在受控载荷下测试空中人员设备的主要部件。该测试方法利用客观标准进行评估,并且可以随时停止,以调查特定的关注区域或防止故障继续导致最终故障。 5.3 该测试方法提供了一种检测声发射源的手段,该声发射源可以是影响飞行人员设备的结构完整性或预期用途的缺陷或不规则性或两者。 5.4 使用本试验方法发现的声发射源应通过更精细的声发射试验方法或其他无损技术(目视、液体渗透、射线照相、超声波、磁粉等)进行评估。).可能需要其他无损测试来定位空中人员设备中存在的缺陷。 5.5 通过本试验方法在空中人员设备中发现的缺陷区域应酌情进行修理和重新试验。维修程序建议超出了本试验方法的范围。
1.1 This test method describes a procedure for non-destructive testing using acoustic emission (AE) testing for aerial personnel devices, which do not have a supplemental load handling attachment. 1.1.1 Equipment Covered— This test method covers the following types of vehicle-mounted insulated aerial personnel devices: 1.1.1.1 Extensible boom aerial personnel devices, 1.1.1.2 Articulating boom aerial personnel devices, and 1.1.1.3 Any combination of 1.1.1.1 and 1.1.1.2 . 1.1.2 Equipment Not Covered— This test method does not cover any of the following equipment: 1.1.2.1 Material-handling aerial devices, 1.1.2.2 Digger-derricks with platform, and 1.1.2.3 Cranes with platform. 1.2 The AE test method is used to detect and area-locate emission sources. Verification of emission sources may require the use of other nondestructive test (NDT) methods, such as radiography, ultrasonics, magnetic particle, liquid penetrant, and visual inspection. Warning— This test method requires that external loads be applied to the superstructure of the vehicle under test. During the test, caution must be taken to safeguard personnel and equipment against unexpected failure or instability of the vehicle or components. Note 1: This test method is not intended to be a stand alone NDT method for the verification of the structural integrity of an aerial device. Other NDT methods should be used to supplement the results. 1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.4 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. 1.5 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 test method provides a means of evaluating acoustic emissions generated by the rapid release of energy from localized sources within an aerial personnel device under controlled loading. The resultant energy releases occur during intentional application of a controlled predetermined load. These energy releases can be monitored and interpreted by qualified individuals. 5.2 This test method permits testing of the major components of an aerial personnel device under controlled loading. This test method utilizes objective criteria for evaluation and may be discontinued at any time to investigate a particular area of concern or prevent a fault from continuing to ultimate failure. 5.3 This test method provides a means of detecting acoustic emission sources that may be defects or irregularities, or both, affecting the structural integrity or intended use of the aerial personnel device. 5.4 Sources of acoustic emission found with this test method shall be evaluated by either more refined acoustic emission test methods or other nondestructive techniques (visual, liquid penetrant, radiography, ultrasonics, magnetic particle, etc.). Other nondestructive tests may be required to locate defects present in aerial personnel devices. 5.5 Defective areas found in aerial personnel devices by this test method should be repaired and retested as appropriate. Repair procedure recommendations are outside the scope of this test method.
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