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Self-Sensing, Lightweight and High Modulus Carbon Nanotube Composites for Improved Efficiency and Safety of Electric Vehicles

NoPo Nanotechnologies India Pvt Ltd-Aparna Allannavar
NoPo Nanotechnologies India Pvt, Ltd.-Gadhadar Changalaraya Reddy
  • Technical Paper
  • 2019-28-2532
To be published on 2019-11-21 by SAE International in United States
Carbon Composites (CFRP) have been touted to be an essential component of future automobiles due to their mechanical properties and lightweight. CFRP has been adopted successfully for secondary and primary structures in Aerospace industry. In Automobiles, they are incorporated in models like the BMW i-series. CFRP suffers from 2 major problems. Delamination of Composites leads to catastrophic and rapid failure which could be dangerous in passenger vehicles. Delamination occurs whenever there is a shock on the composite. Secondly, Composites need regular expensive maintenance to ensure that the material is intact and will not compromise passenger safety. Carbon Nanotubes in composites have shown a substantial increase in delamination resistance. A 0.1wt% addition of HiPCO® Single-walled Carbon Nanotube provides both self-sensing and improved fracture resistance. Here we report results of our work with NoPo HiPCO® Nanotubes with small amounts of Iron. 6K Carbon fiber was used as the fiber reinforcement. NoPo HiPCO® Nanotubes were reinforced in the Epoxy system by sonication. HiPCO® Nanotubes were produced using standard parameters. The coupons of CENCE composite were made using VARTM…
 

Function Of Taguchi Grey Relation Analysis for Influencing the Process Parameter for Getting Better Product Quality and Minimize the Industrial Pollution by Coolants in Turning of Ti–6Al–4V Alloy

SRM Institute Of Science And Technology-Sundar Singh Sivam Sundarlingam Paramasivam, Durai Kumaran, Krishnaswamy Saravanan, Raj Rajendran, Harish Sriram
Tishk International University-Ganesh Babu Loganathan
  • Technical Paper
  • 2019-28-0065
To be published on 2019-10-11 by SAE International in United States
Cutting liquids are important for cutting titanium. In spite of the fact that ventures are discovering routes that to cut titanium dry, the properties of this material reason imperative deterrents for doing this. It is sticky, has low Thermal conductivity, and highlights a low flash point. Thus, the chips don't divert the warmth, and the work will get sufficiently hot to touch off and consume. Cutting Fluids thwart the issue by greasing up the sting, flushing the chips away and cooling the work piece. To guarantee that the cutting liquid plays out these capacities well, titanium combinations lean toward cutting liquids conveyed at a high weight, generally inside the scope of 4,000 psi. to 7,000 psi. This thinks about reports the aftereffects of a Turning test led on the Ti- 6Al- 4V compound of the symmetrical exhibit with Grey relational analysis by Taguchi Method. Spotlights on the improvement of Turning process parameters utilizing the system to get least surface Roughness (Ra), Maximum MRR, Min Tool Wear and Thrust Force with Minimum Industrial pollutants like coolant.…
 

Analogy of thermal properties of polyamide 6 reinforced with glass fiber and glass beads through FDM process

Sri Krishna College of Engg and Tech.-Soundararajan Ranganathan, Hari Nishok Rangasamy Suguna Thangaraj, Aravind Kumar Vasudevan, Dharshan Karthick Shanmugan
  • Technical Paper
  • 2019-28-0137
To be published on 2019-10-11 by SAE International in United States
The essential target of this examination is to compare the thermal properties of two different polyamide composite blends with inventive thermal properties. The two combination of specimen was prepared by using polyamide-6 (PA6) reinforced with 10, 20 and 30 wt% glass fiber (GF) and glass beads (GB) respectively and these composite blends were extruded in form of wire through twin screw extrusion process. The experimental study illustrates to print the specimens by means of a commercial FDM three dimensional (3D) printer. The measure the responses like morphology, thermal conductivity and heat distortion temperature of composites was observed. The results associate that SEM morphology shows high dense homogeneous distribution and fine arrangement of particles in the printed samples. Moreover it reveals that increasing thermal properties of the printed specimen like TC and HDT with the enhancement of 30% glass fiber and bead content in PA6 composites than lower weight percentage composites. The glass fibers are highly crystalline material that can even improve the thermal properties of the polymer matrix and the glass beads are dimensionally stable…
 

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
To be published on 2019-09-09 by SAE International in United States
Objective The objective of this investigation is to improve the thermal properties of plasma sprayed thermal barrier coatings (TBC) for combustion engines. There is a need for further reduction of thermal conductivity and volumetric heat capacity. The negative effects of surface roughness and open surface porosity, typical for plasma sprayed coatings, should be minimized. Methodology To improve the thermal properties, four different measures were applied: 1. modification of the coating's microstructure by using suspension plasma spraying 2. application of gadolinia, a ceramic oxide material originated from aerospace industry 3. polishing of the coating to achieve low surface roughness 4. sealing of the porous coating surface with a polysilazane Six coating variants with different combinations of the applied measures were applied on the piston crown and evaluated in a single cylinder research engine. The experimental data from this design of experiments (DOE) was modeled with multiple linear regression (MLR) to quantify the contribution from each of the measures. The main tool for the evaluation of the coating properties was cylinder pressure analysis, giving the apparent rate…
 
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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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Conversion Coating for Aluminum Alloys Low Electrical Resistance Coating

AMS B Finishes Processes and Fluids Committee
  • Aerospace Material Specification
  • AMS2477D
  • Current
Published 2019-07-24 by SAE International in United States

This specification covers the requirements for a low-electrical-resistance chemical conversion coating on aluminum and aluminum alloy parts.

 
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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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Aluminum Alloy, Extruded Bar, Rod, and Shapes 5.6Zn - 2.5Mg - 1.6Cu - 0.23Cr 7075-T76(51X) Solution Heat Treated and Overaged

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4317B
  • Current
Published 2019-07-02 by SAE International in United States
This specification covers an aluminum alloy in the form of extruded bars, rods, and shapes up to 4.000 inches, incl (101.60 mm, incl) in nominal diameter or least thickness, and having a nominal cross-sectional area up to 20 in2 (129 cm2) (see 8.5).
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Chemical Treatment for Aluminum Alloys Low Electrical Resistance Coating

AMS B Finishes Processes and Fluids Committee
  • Aerospace Material Specification
  • AMS2474E
  • Current
Published 2019-06-25 by SAE International in United States
This specification establishes the engineering requirements for producing chemical-film coatings on aluminum and aluminum alloys and the properties of such coatings.
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Titanium Alloy, Bars, Wire, and Rings 5Al - 2.5Sn Annealed, 110 ksi (758 MPa) Yield Strength

AMS G Titanium and Refractory Metals Committee
  • Aerospace Material Specification
  • AMS4926P
  • Current
Published 2019-06-20 by SAE International in United States
This specification covers a titanium alloy in the form of bars, wire, flash welded rings 4.000 inches (101.60 mm) and under in nominal diameter or least distance between parallel sides and 16 in2 (103 cm2) and under in cross-sectional area, and stock of any size for flash welded rings.
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