1.1 本试验方法涵盖了挖掘机井架的声发射（AE）测试程序。 1.1.1 涵盖的设备- 本试验方法适用于特殊多用途车载机器，通常称为挖掘机井架。这些机器主要用于挖洞、设置电杆以及定位材料和设备。 1.1.1.1 绝缘和非绝缘型挖掘机井架可使用本试验方法进行评估。 1.1.1.2 如果配备有用于定位人员或设备或两者的挖掘机井架，也可以使用本试验方法和试验方法进行评估 F914 . 1.1.2 未涵盖的设备- 本试验方法不包括仅为起重服务设计的通用起重机和仅为挖洞设计的机器。 1.2 声发射测试方法用于检测和区域定位发射源。验证发射源可能需要使用其他无损检测（NDT）方法，如射线照相、超声波、磁粉、液体渗透和目视检查。 1.3 警告 -本试验方法要求对受试车辆的上部结构施加外部荷载。试验期间，必须小心保护人员和设备，防止车辆或部件发生意外故障或不稳定。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 ====意义和用途====== 5.1 本试验方法允许对挖掘机井架的主要部件进行试验，这些部件是由受控载荷下挖掘机井架内局部能源的快速释放产生的。能量释放发生在故意施加预定负载的过程中。这些能量释放可由合格人员监测和解释。验收/拒收标准超出了本试验方法的范围。 可随时停止测试，以调查特定关注区域，或防止故障继续到因施加测试负载而导致的挖掘机井架最终故障。 5.2 本试验方法提供了一种检测声发射源的方法，这些声发射源可能是缺陷、不规则或两者兼有，影响结构完整性或空中人员装置的预期用途。 5.3 应通过更精细的声发射测试技术或其他无损检测方法（目视、液体渗透、射线照相、超声波、磁粉等）评估使用本测试方法发现的重要声发射源。为了精确定位挖掘机井架中的缺陷并估计其尺寸，可能需要其他无损检测方法。其他试验不在本试验方法的范围内。 5.4 通过该测试方法在挖掘机井架中发现的缺陷区域应进行修复，并酌情重新测试。 维修程序建议不在本试验方法的范围内。维修程序建议不在本试验方法的范围内。

1.1 This test method covers a procedure for acoustic emission (AE) testing of digger derricks. 1.1.1 Equipment Covered— This test method applies to special multipurpose vehicle-mounted machines, commonly known as digger derricks. These machines are primarily designed to dig holes, set poles, and position materials and apparatus. 1.1.1.1 Insulated and non-insulated type digger derricks may be evaluated with this test method. 1.1.1.2 Digger derricks, if so equipped to position personnel or equipment, or both, may also be evaluated with this test method in conjunction with Test Method F914 . 1.1.2 Equipment Not Covered— Excluded from this test method are general-purpose cranes designed only for lifting service and machines primarily designed only for digging holes. 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, ultrasonic, magnetic particle, liquid penetrant, and visual inspection. 1.3 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. 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== 5.1 This test method permits testing of the major components of a digger derrick generated by the rapid release of energy from localized sources within the digger derrick under controlled loading. The energy releases occur during intentional application of a predetermined load. These energy releases can be monitored and interpreted by qualified individuals. Acceptance/rejection criteria are beyond the scope of this test method. The test may be discontinued at any time to investigate a particular area of concern, or to prevent a fault from continuing to ultimate failure of the digger derrick resulting from the application of the test load. 5.2 This test method provides a means of detecting acoustic emission sources that may be defects, irregularities, or both, affecting the structural integrity or intended use of the aerial personnel device. 5.3 Significant sources of acoustic emission found with this test method shall be evaluated by either more refined acoustic emission test techniques or by other nondestructive methods (visual, liquid penetrant, radiography, ultrasonic, magnetic particle, etc.). Other nondestructive methods may be required in order to precisely locate defects in the digger derrick, and to estimate their size. Additional tests are outside the scope of this test method. 5.4 Defective areas found in digger derricks by this test method should be repaired and retested as appropriate. Repair procedure recommendations are outside the scope of this test method. Repair procedure recommendations are outside the scope of this test method.