N-k Failure Analysis Algorithm for Identification of Extreme Events for Cascading Outage Pre-screening process
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Computer Science↗
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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Characterizing possible failure modes in physics-informed neural networks (characterizing-pinns-failure-modes) v0.1.0
This software provides an implementation of the physics-informed neural network setup for different differential equations. It provides a way to solve differential equations using machine learning, via a physical constraint term in the loss function. Physics-informed neural networks are a popular approach, but here, the failures of such an approach are characterized and better solutions and training procedures are provided.
Krishnapriyan, Aditi↗
THE SUCESSFUL APPLICATION OF A REPEATED TEST-TO-FAILURE PROGRAM ON SERGEANT MISSILE ASSEMBLIES. PART I. THE DESIGN, APPLICATION, AND RESULTS OF THE COMBINED OPERATING TEMPERATURE VIBRATION TEST FOR MISSILE ASSEMBLIES RELIABILITY. PART II. STATISTICAL TECHNIQUES APPLIED TO THE SERGEANT REPEATED TEST-TO-FAILURE PROGRAM. PART III. CONCLUSIONS AND RECOMMENDATIONS
Reliability of sergeant missile assemblies - application of test-to-failure program
RELIABILITY↗
Failure analysis and design report of Nimbus 1 solar array drive failure Final report
Postflight analysis data on Nimbus 1 solar array drive motor failure
Simpson, W. D.↗
Failure Analysis and Mechanisms of Failure of Fibrous Composite Structures
The state of the art of failure analysis and current design practices, especially as applied to the use of fibrous composite materials in aircraft structures is discussed. Deficiencies in these technologies are identified, as are directions for future research.
Noor, A. K.↗
Learning from Failures: Archiving and Designing with Failure and Risk
Identifying and mitigating risks during conceptual design remains an ongoing challenge. This work presents the results of collaborative efforts between The University of Missouri-Rolla and NASA Ames Research Center to examine how an early stage mission design team at NASA addresses risk, and, how a computational support tool can assist these designers in their tasks. Results of our observations are given in addition to a brief example of our implementation of a repository based computational tool that allows users to browse and search through archived failure and risk data as related to either physical artifacts or functionality.
VanWie, Michael↗
Evidence Theory Representations for Properties Associated With Weak Link/Strong Link Systems, Part 2: Failure Time and Failure Temperature
The use of evidence theory and associated cumulative plausibility functions (CPFs), cumulative belief functions (CBFs), cumulative distribution functions (CDFs), complementary cumulative plausibility functions (CCPFs), complementary cumulative belief functions (CCBFs), and complementary cumulative distribution functions (CCDFs) in the analysis of loss of assured safety (LOAS) for weak link (WL)/strong link (SL) systems is introduced and illustrated. Article content includes cumulative and complementary cumulative belief, plausibility, and probability for (i) time at which LOAS occurs for a one WL/two SL system, (ii) time at which a two-link system fails, (iii) temperature at which a two-link system fails, and (iv) temperature at which LOAS occurs for a one WL/two SL system. The presented results can be generalized to systems with more than one WL and two SLs.
42 ENGINEERING↗
Evaluating the Influence of Size Effects on Load-Displacement Behavior and Failure in Threaded Fasteners Part I: Experimental Testing.
Abstract not provided.
Bosiljevac, Thomas↗
Solid Cylindrical Bar Torsion for Characterizing Shear Plastic Deformation and Failure.
Abstract not provided.
Lu, Wei-Yang↗
Strain-rate-dependent Failure Criteria for Composite Laminates: Application of the Northwestern Failure Theory to Multiple Material Systems.
Abstract not provided.
Schaefer, Joseph D.↗
Progressive Failure Analysis of Multi-directional Composite Laminates Based on the Strain-Rate-Dependent Northwestern Failure Theory.
Abstract not provided.
Schaefer, Joseph D.↗
Quantitative in-situ study of strength-governed interfacial failure between h-BN and polymer-derived ceramic
Not provided.
Materials Science↗
Failure progression in the solid electrolyte interphase (SEI) on silicon electrodes
Not provided.
Chemistry↗
Performance and failure modes of Si anodes patterned with thin-film Ni catalyst islands for water oxidation
Silicon photoanodes patterned with thin-film Ni catalyst islands exhibited stable sunlight-driven O 2 evolution for over 240 h of continuous operation in 1.0 M KOH.
Chemistry↗
CALIBRATION STRATEGIES AND MODELING APPROACHES FOR PREDICTING LOAD-DISPLACEMENT BEHAVIOR AND FAILURE FOR MULTIAXIAL LOADINGS IN THREADED FASTENERS.
Abstract not provided.
Mersch, John Philip↗
Soft Failure Localization During Commissioning Testing and Lightpath Operation
Not provided.
Computer Science↗