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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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Mechanical performance assessment of sustainable coal plastic composite building materials
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A bending test protocol for characterizing the mechanical performance of flexible photovoltaics
Flexible photovoltaics (PV) represents a promising research field with great potential for wearable, portable, and indoor applications. Significant progress has been made in recent years, with flexible emerging PV reporting power conversion efficiency (PCE) over 24%. Yet, there is a need for a unifying protocol to assess PV performance, compare research results, and evaluate the state- of-the-art achievements in flexible PV. In this paper, a consensus protocol is presented for measuring PCE over 1,000 bending cycles under 1% strain. Moreover, several good practice guidelines are proposed including bending procedures, flexibility testing with and without encapsulation, and ambient conditions during testing (e.g., temperature, humidity, illumination). Notably, the importance of uniform application of bending radius and the testing of parallel and perpendicular orientations of bending axis with respect to the direction of the electric current are emphasized. These recommendations aim to promote consistency in device comparison and allow for better reproducibility.
Quantum Approximate Optimization Algorithm: Performance, Mechanism, and Implementation on Near-Term Devices
Not Available
Analysis of the Mechanical Performance of the 4.2-m-Long MQXFA Magnets for the Hi-Lumi LHC Upgrade
Under the U.S. High Luminosity LHC Accelerator Upgrade Project (HL-LHC AUP), the 150 mm bore, high-field Nb 3 Sn low-{eta}_MQXFA quadrupole magnets are being fabricated, assembled and tested, in the context of the CERN Hi-Luminosity LHC (HL-LHC) upgrade. These magnets have 4.2 m magnetic length and 4.56 m long iron yoke. To date, eight MQXFA magnets have been tested. One of the magnets additionally underwent a successful endurance test with 40 triggered quenches, and two magnets did not perform as expected. This work summarizes for the first time the available strain gauge data from eight identical Nb 3 Sn MQXFA tested magnets, focusing on the endurance test, and on a possible cause of underperformance of the two magnets that did not pass the vertical test. Here we applied methods to prevent this from happening in future MQXFA magnets, which shown to be effective for last two tested magnets.
Predicting Mechanical Performance in Additive Manufacturing Components Using Deep Learning.
Abstract not provided.
Predicting Mechanical Performance in Additive Manufacturing Components Using Deep Learning.
Abstract not provided.
Enhancing Understanding of Materials' Mechanical Performance through In-Situ Nanomechanical Testing Approach [Slides]
Abstract not provided.
Regional Mechanical Performance and the Effects of Surface Defects in AM Al-10Si-Mg.
Abstract not provided.
Indium Interconnect Mechanical Performance with Variable UBM and Decreasing Bump Size .
Abstract not provided.
Sandia Mechanics Challenge: Determining Mechanical Performance and Model Calibration Inputs for the Challenge Material and Fasteners
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Evaluation of Mechanical Performance as Indicated by Lightweight In-Situ Monitoring Sensor Modalities in LPBF
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Mechanical performance of a 2 to 10 kilowatt Brayton rotating unit
Operational test and evaluation of Brayton cycle electric generator