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Computerized Experimental Investigation on Performance & Exhaust Emission of Twin Cylinder Adiabatic Diesel Engine Coated with YSZ

SVMIT Bharuch-Dr. Dipakkumar C. Gosai
SVNIT Surat-Anil Kumar Gillawat
  • Technical Paper
  • 2019-28-2548
Published 2019-11-21 by SAE International in United States
The fuel consumption and performance of the Internal Combustion (IC) engine is improved by adopting concepts of an adiabatic engine. An experimental investigation for different load conditions is carried out on a water-cooled, constant-speed, twin-cylinder diesel engine. This research is intended to emphasize energy balance and emission characteristic for standard uncoated base engine and adiabatic engine. The inner walls of diesel engine combustion chamber are thermally insulated by a top coat of Metco 204NS yttria-stabilized zirconia (Y2O3ZrO2) powder (YSZ) of a thickness of 350 mm using plasma spray coating technology. The same combustion chamber is also coated with thermal barrier coating (TBC) bond coats of AMDRY 962 Nickle chromium aluminum yttria of thickness of 150 mm. The NiCrAlY powder specially designed to produce coating’s resistance to hot corrosion. The combination of this ceramic material produces excellent high-temperature thermal barrier coating (TBC) resistant to thermal cycling stresses and strains. The engine valves, engine heads, and engine pistons were thermal barrier ceramic coated and computerized experimental results were compared to the base engine. Experimental results justified TBC…
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Shot Peening Media, Ultrasonically Activated

AMS B Finishes Processes and Fluids Committee
  • Aerospace Material Specification
  • AMS2585A
  • Current
Published 2019-11-04 by SAE International in United States
The complete requirements for procuring the product shall consist of this document and the latest Issue of the basic specification, AMS2431.
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Recommended Practice for Determining Material Properties of Li-Battery Separator

Battery Materials Testing Committee
  • Ground Vehicle Standard
  • J2983_201910
  • Current
Published 2019-10-14 by SAE International in United States
This SAE RP provides a set of test methods and practices for the characterization of the properties of Li-battery separator. The test methods in this RP have been grouped into one of three categories: 1 Separator material parameters: Minimum set of separator properties to be measured. 2 Chemistry/customer-specific parameters: Properties that are dependent on the application, customer needs and/or requirements, manufacturing process, etc. This RP will include the current best practice methodologies for these tests, with an understanding that the best practice methodologies are evolving as more information is learned. 3 R&D parameters: Properties that are dependent on the application, customer needs and/or requirements, manufacturing process, etc. The methodologies in this third section are under development and have not yet achieved broad application. It is not within the scope of this document to establish criteria for the test results, as this is usually established between the materials supplier and seperator manufacturer and the user. This is especially true where this document specifies a range of target values, or an open testing parameter. In these cases,…
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Design and Analysis of Aluminium-Flyash Composite for Connecting Rod

Geethanjali College of Engg. and Tech.-Suresh Nuthalapati, Devaiah Malkapuram
Published 2019-10-11 by SAE International in United States
In this modern era of rapid growth of technology and need of economical machining processes and materials, there is an increasing demand for new materials for different mechanical applications. Composites with fly ash as reinforcement are likely to overcome the cost barrier for wide spread applications in automotive and small engine applications. To improve wettability, elements such as Mg and Si are added into Al melt to incorporate the ceramic particles. The chemical composition and engineering properties of fly ash, its physical and chemical properties make it an ideal raw material for producing various application based composites. The main objective is to fabricate an Aluminium- Flyash composite material suitable for parts like engine connecting rod which demand high strength and temperature sustainability at comparatively less weight. The composite will be made using casting process and Engine connecting rod will be designed in AutoCAD software. The design will be analyzed with the help of Ansys with Aluminium and Aluminium- Flyash composite (at different compositions).
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Compact, Lightweight, CMC-Based Acoustic Liner

  • Magazine Article
  • TBMG-35287
Published 2019-10-01 by Tech Briefs Media Group in United States

In the wake of recent developments that have reduced fan and jet noise contributions to overall jet-engine noise, aircraft designers are turning their attention toward reducing engine core noise. Innovators at NASA’s Glenn and Langley Research Centers are developing a compact, lightweight acoustic liner based on oxide/oxide ceramic matrix composite (CMC) materials.

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Ceramic Bound Materials: A Suitable Solution for Light Brakes

2Dto3D S.r.l.s.-Marco Dastrù
Chilches Materials S.A.-José Carlos Serrano-Posada
Published 2019-09-15 by SAE International in United States
A ceramic bound matrix has been investigated to be used as a friction material. The materials were produced by means of ceramic technology using frits containing silicates, and ceramic friction modifiers such as tin oxide, zircon, iron oxide, magnesium oxide. Four formulations were tested by means of a tribometer (pin-on-disc tester) using a gray cast iron counterpart. Test section included speeds between 1 and 12 ms-1, and loads between 25 and 400 N. The coefficient of friction of the tested specimens were between 0.7 and 0.4, and exhibited sensitivity to speed at low loads (25 N), while they are quite stables at high loads (400N). The characterization of the tribolayers was carried out by means of scanning electron microscopy. The four developed materials were named A, B, C, and D. They exhibited different wear rates and coefficients of friction. All the materials exhibited sensitivity to speed, while showed a lower sensitivity to load. The coefficient of friction level seems to be suitable for brake applications, oscillating between 0.6 and 0.4, depending on the test section.…
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Experimental Evaluation of Novel Thermal Barrier Coatings in a Single Cylinder Light Duty Diesel Engine

Chalmers Technical University-Michael Oevermann
University West-Wellington Uczak De Goes
  • Technical Paper
  • 2019-24-0062
Published 2019-09-09 by SAE International in United States
The objective of this investigation was to improve the thermal properties of plasma sprayed thermal barrier coatings (TBC) for internal combustion engines. There is a need for further reduction of thermal conductivity and volumetric heat capacity and the negative effects on heat loss and combustion phasing of surface roughness and permeable porosity, typical for plasma sprayed coatings, should be minimized. Four measures for improvement of TBC properties were evaluated: i) modification of the coating's microstructure by using a novel suspension plasma spraying method, ii) application of gadolinium-zirconate, a novel ceramic material with low thermal conductivity, iii) polishing of the coating to achieve low surface roughness, and iv) sealing of the porous coating surface with a polysilazane. Six coating variants with different combinations of the selected measures were applied on the piston crown and evaluated in a single cylinder light duty diesel engine. The experimental data was modeled with multiple linear regression to obtain confidence intervals for the measurement results and to correct the data for variations of surface roughness, combustion phasing and compression ratio for…
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Thermal Conductivities of Some Polymers and Composites

Aerospace & Defense Technology: August 2019

  • Magazine Article
  • 19AERP08_09
Published 2019-08-01 by SAE International in United States

Assessing the performance of polymers used in structural armor and filament winding applications.

Thermoset polymers are good electrical insulators that are used in applications ranging from electronics to composite armor. They are rather poor thermal conductors, however.

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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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Standard for Safety Glazing Materials for Glazing Motor Vehicles and Motor Vehicle Equipment Operating on Land Highways - Safety Standard

Glazing Materials Standards Committee
  • Ground Vehicle Standard
  • J3097Z26_201905
  • Current
Published 2019-05-28 by SAE International in United States
Specifications, test methods, and usage provisions for safety glazing materials used for glazing of motor vehicles and motor vehicle equipment operating on land highways.
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