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Low cost, fireproof, and light aircraft interior

Sardou Societe Anonyme-Max Sardou
  • Technical Paper
  • 2019-01-1857
To be published on 2019-09-16 by SAE International in United States
Low cost, fireproof, and light aircraft interior Fire is a dramatic issue in aircraft nowadays, especially with composite air crafts. An additional issue is the dangerous use of flammable Li-Ion batteries in a lot of appliances. we propose in order to avoid dramas to produce aircraft interiors, fire doors, cargo bay walls, as well than cargo container able to contain a fire inside them, with our ceramic composite called TOUGHCERAM ®. We have developed a low-cost, ceramic, damage tolerant, this ceramic is flexible between minus 100°C and plus 350°C. TOUGHCERAM ® poly-crystalize between 60°C and 110°C and can be reinforced with fibbers like carbon or basalt one. TOUGHCERAM ® survive 90 minutes to a propane 1900°C torches. TOUGHCERAM ® does not burn, nor smoke. In this paper we will explain how it is possible to develop a fully mineral ceramic offering such unique mechanical and fire properties.

The Impact of the Temperature-Regulated Semitransparent Heat Insulation of a Combustion Chamber on Working Processes of a Diesel Engine

Moscow Polytechnic University-Vladimir Merzlikin
Peoples’ Friendship Univ of Russia-Sergey Smirnov, Alexander Makarov
  • Technical Paper
  • 2019-24-0176
To be published on 2019-08-15 by SAE International in United States
The paper is about the physico-mathematical model describing the heat parameters of the gas atmosphere in the diesel engine cylinder during the whole working cycle taking into consideration the features of radiant heat exchange inside semitransparent ceramic thermal barrier coatings (TBCs) of the combustion chamber. The simulation of convective and radiant heat transfer was based on analysis of changing of interconnected heat parameters for hot gas of combustion chamber and its heat insulation depending on the crank angle. Thermal radiation within the IR wavelength range of a flame, gas, and soot particles in a cylinder was modelled as a radiant component of the total heat flux. The temperature regime of ceramic insulation (with a transparency band up to ~3-4 μm) was significantly determined by exposure of penetrating radiation flux (with value more MW/m2) of red-hot soot particles in the spectrum of ~1-2 μm. Using numerical experiment, the authors first investigated convective processes which thermoregulation could be additionally caused by temperature conditions of exposed semitransparent TBCs with the subsurface radiant heat source. Then their power will…

EMBATT looks to double the driving range of EVs

Automotive Engineering: June 2019

Kami Buchholz
  • Magazine Article
  • 19AUTP06_11
Published 2019-06-01 by SAE International in United States

A chassis-integrated sandwich structure of solid electrolytes currently in development is projected to deliver all-electric driving ranges that far out-distance today's typical 200-mile (320 km) EV real-world driving range. IAV, Thyssenkrupp AG and Fraunhofer Institute for Ceramic Technologies and Systems (IKTS) are the core project partners working to develop EMBATT, a chassis-embedded energy technology.

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High Temperature Materials Bundle

  • Professional Development
  • PD281946
Published 2019-04-25

Metals and alloys all have different melting ranges depending on their chemistry. High temperature metals are much harder at room temperature, have exceptionally high melting points (usually above 2000 degree Celsius), and are resistant to wear, corrosion and deformation. The following five on-demand courses are included in the High Temperature Materials bundle.  Each course is approximately one-hour in duration. See Topics/Outline for additional details.


Introduction to Materials Bundle

  • Professional Development
  • PD281942
Published 2019-04-17

The following six on-demand courses are included in the Introduction to Materials bundle.  Each course is approximately one-hour in duration. See Topics/Outline for additional details.


Dielectric Test Methods for Evaluating Sparkplug Insulators

Fram Group Co.-Jing Zheng, Danny R. Overton, Corey Eiden, Philip Paul Treier
Published 2019-04-02 by SAE International in United States
Dielectric testing is essential in developing ceramic insulators for spark plugs used in modern engine platforms. Many test methods are developed for different materials and applications. At Autolite, parallel plate dielectric testing based on the ASTM standard was used for material evaluation. The paper will cover the factors that influence the measurements in these tests as well as a comparison of insulator materials from different spark plug manufacturers. Furthermore, to better evaluate the performance of final product, Autolite developed a proprietary engine dielectric test method for spark plugs. The test method is compared with most conventional tests in the automotive industry, and the performance of spark plugs using Autolite conventional and next gen ceramic will be reported.
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Developing High Dielectric Strength Alumina for Spark Plugs

Fram Group Company-Jing Zheng, Danny R. Overton, Philip Paul Treier
Published 2019-04-02 by SAE International in United States
Engine downsizing and widely adopted Gasoline Turbo Direct injection (GTDi) technology has led to harsher application condition for spark plugs, which demand insulators with higher dielectric strength to meet the new challenges in modern engine platform. To improve conventional alumina insulators, the influences of material properties, such as porosity, grain size, glass chemistry and surface finish, on dielectric strength performance are studied. It is also found that, the manufacturing process can greatly impact the final performance. Hence, the effort in optimizing process variables will be discussed and the performance of resultant Autolite HD95 ceramic will be reviewed against those of several leading manufacturers.
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Failsafe Linear Magnetic Brakes

  • Magazine Article
  • TBMG-34113
Published 2019-04-01 by Tech Briefs Media Group in United States

Linear permanent magnet brakes, also known as eddy current brakes, are a failsafe, power-free deceleration system that is used in conjunction with a metal reaction plate. Ceramic or rare earth magnets are bonded to a steel back iron plate; no input power is required.


Novel Dielectric Ceramic by Spark Plasma Sintering

  • Magazine Article
  • TBMG-34143
Published 2019-04-01 by Tech Briefs Media Group in United States

Researchers at NASA’s Marshall Space Flight Center have developed a new dielectric material based on barium titanate nanopowder processed via spark plasma sintering (SPS). The rapid and full densification achieved by SPS, together with a unique ceramic nanopowder processing approach, enables new ceramic materials with extremely high relative permittivity or dielectric constant.


Furnace Brazing of Parts in a Vacuum Atmosphere

AMS B Finishes Processes and Fluids Committee
  • Aerospace Material Specification
  • AMS2678A
  • Current
Published 2019-01-14 by SAE International in United States
This specification covers the requirements and procedures for the brazing of parts in a very low pressure gas which referred to as “vacuum” herein.
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