Reliability Assessment Approach for Stirling Convertors and Generators

Shah, Ashwin R.; Schreiber, Jeffrey G.; Zampino, E.J.; Best, Timothy J.

doi:10.1063/1.1541351

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…The spectrum of both PVP–CMC polymer composite films (Figure ) presents the characteristic absorptions, including the absorption around 1035, 2515, and 1405 cm −1 . The peak at 1035 cm −1 represents the C─O stretching and 3347 cm −1 corresponds to hydroxyl (─OH) group . The broad absorption band between (3000–3500 cm −1 ) represents the hydrogen bonding in the polymers .…”

Section: Resultsmentioning

confidence: 99%

Low‐cost and biodegradable cellulose/PVP/activated carbon composite membrane for brackish water treatment

Ramadoss

Regi

Rahman

et al. 2019

J of Applied Polymer Sci

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A simple fabrication of a biodegradable membrane for use in water purification systems is presented in this work. Sodium carboxymethyl cellulose and PVP are dissolved in water and crosslinked with citric acid. The presence of glycerol has given immense flexibility and mechanical strength to the membrane. The addition of activated charcoal has enhanced its purification and dye adsorption capabilities at room temperature in dark and light conditions. The polymer semiconductor composites are completely soil degradable within a week and the membrane also exhibits good electrical conductivity when compared to the membrane without charcoal. The addition of glycerol has acted as molecular spacer between polymers composite's monomer backbone that allows good electron mobility of 9.9 cm2 V−1 s−1. The dye adsorption efficiency of the material with two commonly used toxic textile dyes is found to be 100% for methyl orange and up to 57% for Rhodamine B within 3 h. The material shows good dye adsorption efficiency under dark and light conditions with acidic, neutral, and alkaline pH. Salt rejection was also found to increase from 25.3 to 64.4% with applied voltage. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48746.

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Section: Resultsmentioning

confidence: 99%

Low‐cost and biodegradable cellulose/PVP/activated carbon composite membrane for brackish water treatment

Ramadoss

Regi

Rahman

et al. 2019

J of Applied Polymer Sci

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show abstract

“…The use of probabilistic techniques to evaluate life and reliability for the complete Stirling convertor is presently being studied. The goal is to extend this analysis to include all parts of the generator, including the structure, thermal transport, Stirling convertor, controller, and the radiator (Shah, 2003). This type of analysis provides insight into the value of the factors-of-safety (FOS) and the margins that exist in the design by converting FOS and margin into probability to achieve mission requirements.…”

Section: Other Tasksmentioning

confidence: 99%

NASA GRC Stirling Technology Development Overview

Thieme

Schreiber²

2003

AIP Conference Proceedings

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“…GRC has recently initiated a reliability effort, part of which has been described previously. 11 The reliability effort has several components. The primary component is managed through the GRC Risk Management Office (RMO).…”

Section: Reliabilitymentioning

confidence: 99%