Time stress measurement device use for on-board diagnostic support

Time stress measurement systems have been developed to support fielded and emerging systems. This electronic link between the system and maintainer is non-instrusive to the prime mission equipment and provides information as to the cause of failure events in flight. This paper provides a brief background into several programs where TSMD system integration is in progress in mature systems such as the B-1B radar, emerging research and development efforts such as iBITSM, and new platforms. The Time Stress Measurement Device serves on-equipment to capture, pre-process, store, and communicate fault or intermittent data to support flight-line or depot diagnostic tools. Off-equipment elements of the time stress measurement system include data collection, data management, and trend analysis. Time stress measurement has evolved over the last ten years from environmental stress data gathering to advanced Built-In-test-Equipment which supports fault isolation on-equipment and Re-TOK reduction off-equipment