This paper defines test time compression issues associated with vibration testing as described in MIL-STD-810E and MIL-HDBK-781. Differences and similarities associated with the test goals and application of each document are examined. Use of these documents for establishing test time compression algorithms related to fatigue life (durability) and reliability evaluations is discussed. Specific inconsistencies between the vibration models in each document for jet aircraft equipment are identified. Recommendations are offered for bringing these documents into agreement to provide increased uniformity and correlation of results throughout a test program.
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