Donald Barker

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In this paper, a methodology is developed for monitoring, recording, and analyzing the life-cycle vibration loads for remaining-life prognostics of electronics. The responses of printed circuit boards to vibration loading in terms of bending curvature are monitored using strain gauges. An analytical model calibrated by finite element analysis is developed(More)
This paper presents a method for uncertainty analysis of prognostics with a focus on electronics subject to random vibration. First we identify uncertainty sources and types: measurement uncertainty, parameter uncertainty, failure criteria uncertainty, and future usage uncertainty. Next, we present an approach to determine the uncertainty in a prognostic(More)
BACKGROUND Previous reviews have focussed on the rationale for employing the stepped wedge design (SWD), the areas of research to which the design has been applied and the general characteristics of the design. However these did not focus on the statistical methods nor addressed the appropriateness of sample size methods used.This was a review of the(More)
This paper discusses a prognostics methodology for assessing the remaining life of a group of electronic components mounted on a circuit board using a single accelerometer to monitor the life-cycle vibration loads. The accelerometer captures the global circuit board response to enable all components on the circuit board to be analyzed. A case study is(More)
Tennessee implemented a statewide trauma care system in 1988. This system serves the state of Tennessee and supports eight neighboring states. The demographics and geography of Tennessee have ensured that nearly all residents have rapid access to the trauma care system. However, since 1988, many changes have occurred in healthcare in general, and trauma(More)
Tennessee implemented a statewide trauma care system in 1988. This system serves the state of Tennessee and supports eight neighboring states. The demographics and geography of Tennessee have ensured that nearly all residents have rapid access to the trauma care system. However, since 1988, many changes have occurred in healthcare in general, and trauma(More)