In addition to the guidance provided in Part One, paragraphs 5.14 and 5.17; and Part One, Annex A, Task 406, the following information is provided to assist in the evaluation of the test results. Analyze in detail any failure of a test item to meet the requirements of the system specifications, and consider related information such as:
5.1 Procedure I - Near-field with Actual Configuration
Carefully evaluate any failure in the structural configuration of the test item, e.g., minute cracks in circuit boards that may not directly impact failure of the functioning of the materiel, but that would lead to failure in its in-service environment conditions. Once the source of the failure is identified, re-testing is required.
5.2 Procedure II - Near-field with Simulated Configuration
Carefully evaluate any failure in the structural configuration of the test item, e.g., minute cracks in circuit boards that may not directly impact failure of the functioning of the materiel, but that would lead to failure in its in-service environment conditions. Once the source of the failure is identified, re-testing is required.
5.3 Procedure III - Mid-field Using Mechanical Test Device
The mechanical shock simulation will, in general, provide a more severe low frequency environment (comparatively large velocity and displacement) than the actual pyroshock event and, hence, any structural failures, e.g., deformed fasteners or mounts, may be more akin to those found in the SRS prescribed shock tests described in Method 516.8.
If this is the case, and the cause of the structural failure is not readily apparent, another procedure may be required to satisfy the test requirements. Once the source of the failure is identified, re-testing is required.
5.4 Procedure IV - Far-field Using Mechanical Test Device
The mechanical shock simulation will, in general, provide a more severe low frequency environment (comparatively large velocity and displacement) than the actual pyroshock event and, hence, any structural failures, e.g., deformed fasteners or mounts, may be more akin to those found in the SRS prescribed shock tests described in Method 516.8. If this is the case and the cause of the structural failure is not readily apparent, another procedure may be required to satisfy the test requirements. Once the source of the failure is identified, re-testing is required.
5.5 Procedure V - Far-field Using Electrodynamic Shaker
The mechanical shock simulation will, in general, provide a more severe low frequency environment (comparatively large velocity) than the actual pyroshock event and, hence, any structural failures may be more akin to those found in the SRS prescribed shock tests described in Method 516.8. If this is the case and the cause of the structural failure is not readily apparent, another procedure may be required to satisfy the test requirements. Once the source of the failure is identified, re-testing is required.