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Determine Thermal Fatigue Requirements for PEPS Antenna Copper Wire over Vehicle Lifetime with defined Reliability Requirements.

GMTCI-Abhinav Jauhri
  • Technical Paper
  • 2019-28-2582
To be published on 2019-11-21 by SAE International in United States
Reliability states the degree to which the result of a measurement, calculation, or specification can be depended on to be accurate. And, tests according to GMW specifications represents a minimum of 15 years of vehicle life time with defined Reliability and Confidence level. In this work, actual number of thermal cycles for Thermal Fatigue tests (Thermal Shock and Power Temperature Cycle) are calculated for Copper Wire whose Coffin Manson exponent is 5. Overstressing the PEPS Antenna under thermal fatigue requirement (defined number of thermal cycles based on Reliability and Confidence requirements) will lead to broken Copper wire which will result in component’s functional failure and thus impossible to continue reliability testing. The objective of this paper is to determine thermal fatigue requirements for Antenna’s Copper wire whose Coffin Manson exponent is 5. Testing with exact number of thermal cycles will reduce the validation failures owing to broken Copper wire and thus save incurred revalidation cost. The current study is limited to only adjusting the thermal fatigue requirements (Number of Thermal Cycles) for only specific E/E…
 

CFD Simulation on turbulent forced convection of CuO-Water Nanofluids in a horizontal circular pipe

John Deere India Pvt, Ltd.-Nitin Dewangan, Nitin Kattula
  • Technical Paper
  • 2019-28-0131
To be published on 2019-10-11 by SAE International in United States
The present study provides a detailed investigation on simulation of Copper oxide nanofluids in a simple horizontal circular pipe considering turbulent forced convection, with a constant heat flux boundary condition. The simulation is carried out using three different models available in fluent viz. Newtonian single phase model, Eulerian-mixture and Eulerian-Eulerian multiphase models. The Reynold number of the flow is varied along with volume concentration of nanoparticles varying from low to high. Nanofluids rheology is studied by considering standard k-ε two equation turbulence model with enhanced wall treatment considering appropriate wall y+ values. The effective temperature dependent thermo-physical properties for nanofluids were seized from the literatures. The results from the simulation clearly showed an increase in the heat transfer characteristics with the addition of nanofluids compared to that of base fluid alone. Eulerian-Mixture model predicted the Nusselt number near to that of the experimental results from literature. Index terms: Nanofluids, copper oxide, heat transfer, simulation, Nusselt number.
 

Emission and tribological studies on nano CuO/Jatropha methyl ester/Synthetic mineral oil in a two-stroke engine.

Bannari Amman Institute of Technology-Anbalagan Ramakrishnan
Vellore Institute of Technology-Govindasamy Rajamurugan, Prabu Krishnasamy
  • Technical Paper
  • 2019-28-0095
To be published on 2019-10-11 by SAE International in United States
In lieu of the increase in the population of automobiles, there is heavy use of fossil fuels and mineral oils. This leads to depletion in fossil fuel and mineral oil which is a by-product of petroleum. We cannot depend on this for a long period of time and which is toxic to the environment. In order to reduce the usage of existing mineral oil for lubrication, a source of non-edible oil from Jatropha Curcus which is available in an abundant and renewable source of alternative lubricant is processed as jatropha methyl ester because of high viscosity and density and blended with base oil which reduces the pollution. To increase the antiwear properties of the lubricating oil nano copper oxide particle additive are blend with the base oil which is tested in a two-stroke engine. Emission and tribological effects have been tested. There are chances of them being depleted in a short span of years. As a replacement for mineral oil, varies vegetable oils are taken up for research purpose in order to use them as…
 

Influence of Amount of Phenolic Resin on the Tribological Performance of Environment-Friendly Friction Materials

Indian Institute of Technology Delhi-Navnath Kalel, Jayashree Bijwe, Ashish Darpe
  • Technical Paper
  • 2019-01-2105
To be published on 2019-09-15 by SAE International in United States
The binder in friction materials (FMs) plays a very crucial role which binds all the ingredients firmly so that they can function the way they were supposed to do. The type and amount of binder, both are very critical for manipulating the desired performance properties, which mainly include friction and its sensitivity towards operating parameters, wear resistance, counter-face friendliness, noise, vibration etc. Although a lot is reported on the influence of types of resins on tribo-performance of FMs, hardly any paper pertains to paint this on a bigger canvas with more detailed understanding of the amount of resin in FMs on the performance properties.The present study addresses these aspects by developing brake-pads with identical composition but varying in amount (wt. %) of straight phenolic resins (6, 8, 10 and 12) by compensating the difference with barite, a space filler. The ingredients did not contain asbestos, Copper, Zinc, etc. and hence were environment friendly. Tribological performance of the composites was evaluated on a full-scale inertia brake dynamometer following JASO C406 test schedule. With increase in the…
 
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TERMINAL, LUG, CRIMP STYLE, COPPER, UNINSULATED, RING TONGUE, TIN WHISKER RESISTANT, TYPE I, CLASS I, FOR 150 °C TOTAL CONDUCTOR TEMPERATURE

AE-8C2 Terminating Devices and Tooling Committee
  • Aerospace Standard
  • AS7928/11D
  • Current
Published 2019-08-21 by SAE International in United States

Scope is unavailable.

 
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Copper Wire, Bare, High Purity

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4700E
  • Current
Published 2019-08-01 by SAE International in United States

This specification covers one type of copper in the form of wire.

 

TERMINAL, LUG, CRIMP STYLE, COPPER, UNINSULATED, FLAG TONGUE, SIZES 22-10, TYPE I, CLASS I, FOR 150°C TOTAL CONDUCTOR TEMPERATURE

AE-8C2 Terminating Devices and Tooling Committee
  • Aerospace Standard
  • AS7928/15A
  • Current
Published 2019-07-08 by SAE International in United States
No Abstract Available.
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TERMINAL, LUG, CRIMP STYLE, COPPER, UNINSULATED, RING TONGUE, TYPE I, CLASS 1, FOR 175 °C OR 260 °C TOTAL CONDUCTOR TEMPERATURE

AE-8C2 Terminating Devices and Tooling Committee
  • Aerospace Standard
  • AS20659G
  • Current
Published 2019-07-08 by SAE International in United States
No Abstract Available.
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Copper Alloy, Brazing Filler Metal 52.5Cu - 38Mn - 9.5Ni 1615 to 1700 °F (879 to 927 °C) Solidus-Liquidus Range

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4764G
  • Current
Published 2019-06-17 by SAE International in United States
This specification covers a copper alloy in the form of wire, rod, sheet, strip, foil, and powder and a viscous mixture (paste) of powder in a suitable binder.
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Steel, Carburizing Grade, Bars, Forgings, and Tubing 1.2Cr - 3.2Ni - 0.12Mo (0.14 - 0.20C) (9317)

AMS E Carbon and Low Alloy Steels Committee
  • Aerospace Material Specification
  • AMS6264M
  • Current
Published 2019-06-17 by SAE International in United States
This specification covers an aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.
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