MIL-STD-2105D
the report; rationale for deviations from the test plan (with an analysis showing why the results should be accepted), test item configuration and identification, test date, test results, and safety and vulnerability related conclusions that may be drawn from the test results.
4.5 Hardware. Ensure the item to be tested is either production hardware or a representative of production hardware. Use of simulated components for non-explosive components is acceptable providing they accurately simulate the thermal, confinement, mass, and retention characteristics of their counterparts. When the item differs from production hardware, describe the configuration in the test plan.
4.6 Test facilities. Ensure the test chamber or test fixtures used do not interfere with the test stimulus being imposed on the test item or influence the subsequent reaction of the item. Unless otherwise specified, use tolerances of test conditions and instrumentation calibrations in accordance with MIL-STD-810.
4.6.1 Witness plates. Witness plates are used to "witness" a reaction by providing an impact surface for fragments and shock waves. Design witness plates to survive a reaction and provide post-test physical evidence of its severity. Information regarding the degree of test item fragmentation may be obtained by locating witness plate(s) away from the test item.
Use relatively thin plates to permit sufficient data collection of impacting fragments. Alternatively, information regarding the shock pressure produced by the reacting explosive(s) may be obtained by placing witness plate(s) in direct contact with the test item. Use plates of sufficient thickness, hardness, and strength to withstand detonation of the test item without fracturing.
Determination of the specific number, types, sizes, and location of the witness plates is the responsibility of the testing activity. However, the testing activity must ensure the witness plates are integrated into the test setups in a manner that will not influence the response of the test item, and does
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