MIL-STD-1540D
5.4.1 Analysis. Design analysis shall be performed, documented and correlated with test plans and results. Analysis shall include verification of unit, subsystem and system performance over expected life and operating environments.
5.4.2 Test. Testing is generally the method to verify that hardware items meet allocated system requirements during and following exposure to applicable environments. Testing includes an explicit measure of performance during exposure to an applicable environment, or it may be a measurement coupled with an analysis or other demonstration.
5.4.2.1 Hardware Qualification. Qualification tests, inspections and procedures shall be developed for hardware ranging from units through integrated systems. In general, the design and manufacturing requirements should be verified at the lowest level of assembly practicable. Requirements affected by integration into higher levels of assembly, such as external system interfaces, should be verified at the highest practical level of assembly. The establishment of effective and optimum test programs is a complex task which can best be accomplished by relying on prior experience. Appendix A provides guidance that may be helpful for defining hardware qualification test requirements for a particular program.
5.4.2.1.1 Qualification Techniques. In general, verification of design and the associated manufacturing processes shall rely on performance of tests except in cases where:
a. Proven documented analysis methods are available for simple designs which have large design margins,
b. A design requirement can readily be verified by inspection or demonstration,
c. Qualifications by similarity shall be shown by analysis and the criteria provided in MIL-HDBK-340A, VOL ll, paragraph 4.4.
5.4.2.1.2 Qualification Test Requirements. Qualification test requirements for design and manufacturing verification shall be developed for units, subsystems and vehicles to assure that products have established and proven design margins of safety. Qualification testing is always required, although, in certain instances, qualification may be established by showing that a product is identical or similar to an existing product that has been qualified using analysis and Qualification by Similarity criteria as discussed in MIL-HDBK-340A, VOL ll, paragraph 4.4. The qualification test program shall assure that a design performance and safety margin exists for any mechanical, electrical or environmental stimuli that the product may reasonable expect to encounter during its service life including:
a. Assembly, integration and acceptance test at the factory,
10
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business