Obsolescence of the MIL-HDBK-217: A critical review

Francesco, Eduardo De; Francesco, Ruggero De; Petritoli, Enrico

doi:10.1109/metroaerospace.2017.7999581

Cited by 24 publications

(6 citation statements)

References 20 publications

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“…This is particularly true for the case of power electronic converters [22]. In fact, it is now widely accepted that data from MIL-HDBK-217 [20] is no longer a reputable source when performing reliability analyses [23]. This is a consequence of the time that has passed since the database was last updated, in addition to its use of empirical relationships to determine the failure rate of the components.…”

Section: Reliability Evaluation Of Power Electronic Convertersmentioning

confidence: 99%

System Wide Reliability Impact of Power Converters in More-Electric Aircraft Applications

Millar¹,

Fong²,

Alzola³

et al. 2023

SAE Technical Paper Series

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<div class="section abstract"><div class="htmlview paragraph">The continued electrification of aircraft is required such that ambitious decarbonisation targets can be met. A significant challenge presented with this trend is the increased reliance on electrical systems to perform flight-critical operations in a manner that has not been seen in previous generations of aircraft. The power electronic converter is a key enabling technology in aircraft electrification. Its prevalence is such that the failure rate of flight critical-loads is closely linked with that of the associated power electronic converters. As such, there is a clear need to better understand the impact of improvements in both the reliability and failure estimation of novel power electronic converters at a systems level in future aerospace applications. Accordingly, this paper presents key highlights from literature on power converter research, summarising advances in reliability-enhancing features and more accurate Physics-of-Failure modelling methods. Simulation studies are then presented, which explore the impact of component-level advancements in power converters on the system-level failure rates and power system architecture configurations of flight-critical loads in more-electric aircraft applications.</div></div>

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Section: Reliability Evaluation Of Power Electronic Convertersmentioning

confidence: 99%

System Wide Reliability Impact of Power Converters in More-Electric Aircraft Applications

Millar¹,

Fong²,

Alzola³

et al. 2023

SAE Technical Paper Series

View full text Add to dashboard Cite

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“…One main constraint of the MC model is that the probability of transitioning between states (i.e., failure rate) is constant, e.g., λ(t) = λ [12]. While this constraint is aligned with the assumption of constant failure rate of power converters in the past (e.g., in the middle phase of the bathtub curve), the same condition is not applicable for modern power converters whose useful life is expected to cover also the initial phase of the wear-out period [13]. Thus, it is not possible to apply the traditional MC model for analyzing the reliability of FT power converters when wear-out failures are considered To address this issue, a reliability evaluation method for FT power converters considering wear-out failures is proposed in this paper.…”

Section: Operating Time (T)mentioning

confidence: 99%

Reliability Assessment of Fault-Tolerant Power Converters including Wear-Out Failure

Sangwongwanich

Blaabjerg

2022

2022 IEEE Applied Power Electronics Conference and Exposition (APEC)

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Conventionally, reliability analysis of fault-tolerant (FT) power converters is carried out using a Markov Chain (MC) model, which is only applicable for components with a constant failure rate. However, modern power electronics are expected to operate even until the components start to wear-out, e.g., due to aging/degradation, where the failure rate of the components is no longer constant, and thus the traditional MC model cannot be applied. To address this issue, a method to evaluate the reliability of FT power converters considering wear-out failure is proposed in this paper. The proposed solution employs the method of stages to incorporate the wear-out failure states in the MC model, which includes the failure rates during pre-fault and post-fault conditions. By doing so, the wear-out failure can be taken into account in the reliability analysis of FT power converters, which has been demonstrated with a case study of a three-phase inverter with FT topology for PV application.

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“…The detailed basic information on reliability and its terminology have been given in Jin (2019). Several standards, models and manuals have been used in processor reliability estimation (De Francesco et al , 2017). Some of the reliability analysis standards are discussed in Table 1.…”

Section: Reliability Empirical Relation and Its Standards For Industr...mentioning

confidence: 99%

Simulation and empirical validation of new sensitivity based reliability analysis technique for processors deployed in industrial drives

Chitra

2022

COMPEL

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Purpose The purpose of this study is to extend a sensitivity-based reliability technique for the processors deployed in industrial drive (ID). Design/methodology/approach The processor provides flexible operation, re-configurability, and adaptable compatibility in industrial motor drive system. A sensitivity-based model allows a robust tool for validating the system design. Sensitivity is the probability of a partial failure rate for a distributed variable; sensitivity and failure rates are also complementary. Conversely, traditional power electronic components reliability estimating standards have overlooked it, and it is essential to update them to account for the sensitivity parameter. A new sensitivity-based reliability prediction methodology for a typical 32-bit microprocessor operating at 30ºC deployed in ID is presented to fill this gap. The proposed techniques are compared with the estimated processor reliability values obtained from various reliability standards using the validated advanced logistics development tool. The main contribution of this work is to provide a sensitivity extended reliability method over the conventional method directing toward improving reliability, availability, and maintainability in the design of ID. Findings The analysis shows that the sensitivity of the processor’s circuit increases due to increases in complexity of the system by reducing the overall mean time between failure upon comparing among conventional reliability standards. Originality/value The significance of this paper lies in the overall, sensitivity-based reliability technique for processors in comparison to the traditional reliability complexity in IDs.

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Obsolescence of the MIL-HDBK-217: A critical review

Cited by 24 publications

References 20 publications

System Wide Reliability Impact of Power Converters in More-Electric Aircraft Applications

System Wide Reliability Impact of Power Converters in More-Electric Aircraft Applications

Reliability Assessment of Fault-Tolerant Power Converters including Wear-Out Failure

Simulation and empirical validation of new sensitivity based reliability analysis technique for processors deployed in industrial drives

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