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THE EFFECT OF BIODIESEL ON THE ELECTRICAL PROPERTIES OF AUTOMOTIVE ELASTOMERIC COMPOUNDS

Ford Motor Company-Rodrigo Polkowski Ângelo Aguiar, Oberti Almeida, Cristiane Gonçalves, Cristiano Herbert, Helano Santos, Jodalva Souza
  • Technical Paper
  • 2019-36-0327
Published 2020-01-13 by SAE International in United States
The lack of electrical conductivity on materials, which are used in automotive fuel systems, can lead to electrostatic charges buildup in the components of such systems. This accumulation of energy can reach levels that exceed their capacity to withstand voltage surges, which considerably increases the risk of electrical discharges or sparks. Another important factor to consider is the conductivity of the commercially available fuels, such as biodiesel, which contributes to dissipate these charges to a proper grounding point in automobiles. From 2013, the diesel regulation in Brazil have changed and the levels of sulfur in the composition of diesel were reduced considerably, changing its natural characteristic of promoting electrostatic discharges, becoming more insulating. Taking into account the critical factors mentioned above, the SAE J1645 standard specifies the levels of conductivity and maximum electrostatic energy accumulation (ESD) that automotive materials must meet to avoid unintentional discharges on these systems and guarantee the integrity of the involved components and the safety of occupants. Thus, this work aims to analyze the effect of (bio)diesel on the electrical properties…
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Thermal behavior of aircraft gas turbine blades under different internal cooling conditions

Federal Institute of Espírito Santo - IFES-L. P. Borlini, T. V. Caniçali, L. N. Santos, J. A. Coelho, I. M. Minchio, F. A. F. Monhol
  • Technical Paper
  • 2019-36-0212
Published 2020-01-13 by SAE International in United States
Gas turbines are high value-added equipment due to their compact construction, lower weight and high power compared to traditional internal combustion engines. This equipment is subject to high mechanical demands, high temperatures, corrosive and erosive environments, which certainly have a direct influence on its performance. Thus, with the increasing demands of the aerospace industry, it became necessary to use devices to improve their efficiency, such as internal cooling systems and insulation layers. However, a detailed knowledge of the operational variables is necessary in order to define the appropriate internal cooling conditions of the equipment. Thus, the present work aims to analyze, through computational simulations using the finite difference method in its two-dimensional form, the temperature distribution and the heat transfer rate of gas turbine blades under different thermal conditions. The temperature of the hot gas flowing through the blades, as well as the flow and temperature of the cooling air that passes through their internal channels, were varied in order to obtain the influence of each of these factors on the thermal behavior of the…
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Marking of Electrical Insulating Materials

AE-8A Elec Wiring and Fiber Optic Interconnect Sys Install
  • Aerospace Standard
  • AS5942
  • Current
Published 2019-12-27 by SAE International in United States
This specification establishes the performance requirements for the identification of wire and cable by indirect markings that have been applied to electrical insulating materials including heat shrink sleeving, wrap around labels and “tie-on” tags as well as any other types of materials used for indirect marking. This specification covers the processes used to mark these materials, including impact ink marking, thermal transfer, hot stamp, and lasers, etc. This specification does not cover the direct marking on insulated electrical wires and cables.
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WIRE, ELECTRICAL, POLYTETRAFLUOROETHYLENE/POLYIMIDE INSULATED, NORMAL WEIGHT, SILVER COATED, HIGH STRENGTH OR ULTRA HIGH STRENGTH COPPER, ALLOY, 200 °C, 600 VOLTS ROHS

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS22759/89D
  • Current
Published 2019-12-18 by SAE International in United States
No Abstract Available.
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WIRE, ELECTRICAL, POLYTETRAFLUOROETHYLENE/POLYIMIDE INSULATED, SMOOTH SURFACE, LIGHT WEIGHT, TIN-COATED COPPER CONDUCTOR, 150 °C, 600 VOLTS ROHS

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS22759/180A
  • Current
Published 2019-12-18 by SAE International in United States
No Abstract Available.
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WIRE, ELECTRICAL, POLYTETRAFLUOROETHYLENE/POLYMIDE INSULATED, SMOOTH SURFACE, LIGHT WEIGHT, SILVER-COATED HIGH STRENGTH OR ULTRA HIGH STRENGTH COPPER ALLOY, 200 °C, 600 VOLTS ROHS

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS22759/181A
  • Current
Published 2019-12-18 by SAE International in United States
No Abstract Available.
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Insulation Sleeving, Electrical, Heat Shrinkable, Polyvinyl Chloride, Semi Rigid, Crosslinked and Non-Crosslinked

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS23053/2A
  • Current
Published 2019-12-10 by SAE International in United States

Scope is unavailable.

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Wire, Electrical, Polyvinyl Chloride Insulated, Nylon Jacket, Tin-Coated Copper Conductor, Medium Weight, 600-Volt, 105 °C

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS50861/7A
  • Current
Published 2019-12-05 by SAE International in United States

Scope is unavailable.

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WIRE, ELECTRICAL, POLYVINYL CHLORIDE INSULATED, POLYAMIDE JACKET, TIN-COATED COPPER CONDUCTOR, 600-VOLT, 105 °C

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS50861/1A
  • Current
Published 2019-12-05 by SAE International in United States

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WIRE, ELECTRICAL, POLYVINYL CHLORIDE INSULATED, PVC-GLASS-POLYAMIDE, TIN-COATED COPPER CONDUCTOR, 600-VOLT, 105 °C

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS50861/2A
  • Current
Published 2019-12-05 by SAE International in United States

Scope is unavailable.