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.