Your Selections

Conductivity
Show Only

Collections

File Formats

Content Types

Dates

Sectors

Topics

Authors

Publishers

Affiliations

Committees

Events

Magazine

   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

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

NoPo Nanotechnologies India Pvt Ltd.-Gadhadar Changalaraya Reddy, Aparna Allannavar
  • 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…
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.
new

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
Published 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.…
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.
new

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
Published 2019-10-11 by SAE International in United States
The essential target of this examination is to compare the morphological and thermal properties of two different polyamide composite blends with inventive thermal properties. The polyamide-6 (PA6) reinforced with 10, 20 and 30 wt. % glass fiber (GF) and PA6 reinforced with 10, 20 and 30 wt. % glass beads (GB) are the two different polyamide composite blends extruded in form of wire by twin screw extrusion process. The experimental study illustrates to print the specimens by means of Fusion Deposition Modeling (FDM) based Three-Dimensional (3D) printer. The responses like morphology, Thermal Conductivity (TC) and Heat Distortion Temperature (HDT) of composites were observed. From the scanning electron microscope (SEM) analysis equal distribution of higher 30wt% GF and GB in the PA6 matrix was observed. The results compare the increasing thermal properties of the 3D printed specimen like TC and HDT with the enhancement of beads content during the investigation. The GB are crystalline material which improves the thermal properties of the PA6 matrix and the GF are dimensionally stable material that can provide high modulus…
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.
new

Metallurgical and Wear Behaviour of Stellite 6 Reinforced Stainless Steel 316 Joints by Nd-YAG Laser Welding Process

BSACIST-Varun Kumar Arulvizhi, Selvakumar Alandur Somasundaram, Balasrinivasan Murugan, Ravikumar Natarajan
Renault & Nissan-Abdur Rahman Kalam
Published 2019-10-11 by SAE International in United States
Laser welding process is a most effective and predominant method for joining of steel alloys when compared with other welding processes in practice due to their precise control of laser source across the bonding zone where it is crucial to control in other joining processes. In common the austenitic steels differ from ferritic based on two factors, thermal conductivity and expansion. Here, the selected Nd-YAG laser setup for joining of similar base material stainless steel 316 which is reinforced with and without stellite 6 powders. The experimental investigations (metallurgical survey and wear characteristics) were performed on all the samples. The powders were reinforced in the material directly by performing a drill across the bond line instead of a normal coating process which is in practice, later the powders were stuffed through the holes. Totally four samples were processed by varying the process parameters such as laser power (W), laser frequency (Hz) and keeping the time (s), feeding rate (mm/s) as constant. During the joining process the powders will get solidified with the molten steel alloy.…
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.
new

Performance Requirements for Wire, Electric, Insulated Copper or Copper Alloy

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AS4372C
  • Current
Published 2019-09-24 by SAE International in United States
This document covers the requirements for insulated, single-conductor, electric wires with tin-coated, silver-coated, or nickel-coated conductors of copper or copper alloy as specified in an applicable generated performance sheet (see Appendix A for sample). It provides general performance requirements, ratings, and information for various characteristics of insulated wire systems used in aerospace applications. Numerical test requirements, or parameters, were originally developed using either English or metric units. The original, primary, units are shown first with the secondary (converted) units in parentheses. Secondary units are listed for information only and are not to be considered requirements. Wire will be assigned a level of performance for many requirements set forth in this standard. These performance levels, in addition to numerical test results, shall be listed in the applicable performance sheet. This standard contains some tests and referenced AS4373 Test Methods that have not been rigorously confirmed as reproducible. Such methods are identified under the Precision and Bias Statements in the individual AS4373 Test Methods. Many requirements have multiple levels of performance. The wire with base level of…
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.
new

Aluminum Alloy, Hand Forgings 7.5Zn - 1.6Cu - 1.5Mg - 0.12Zr (7085-T7452) Solution Heat Treated, Compression Stress-Relieved, and Overaged

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4414
  • Current
Published 2019-09-19 by SAE International in United States
This specification covers an aluminum alloy in the form of hand forgings 12 inches (305 mm) and under in nominal thickness and of forging stock.
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.
new

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…
This content contains downloadable datasets
Annotation ability available
new

Conductive Textiles Connect Multiple Wearables

  • Magazine Article
  • TBMG-35093
Published 2019-09-01 by Tech Briefs Media Group in United States

Researchers at the National University of Singapore (NUS) have invented a completely new way for wearable devices to interconnect. They incorporated conductive textiles into clothing to dynamically connect several wearable devices at once. This “wireless body sensor network” allows devices to transmit data with 1,000 times stronger signal than conventional technologies, meaning the battery life of all devices is dramatically improved. Wireless networks of these wearable devices on a body have future applications in health monitoring, medical interventions, and human-machine interfaces.

new

Graphene Field Effect Transistors for Radiation Detection (GFET-RS)

  • Magazine Article
  • TBMG-35148
Published 2019-09-01 by Tech Briefs Media Group in United States

NASA Goddard Space Flight Center developed novel transistor technology based on a single graphene layer coupled to a radiation absorber substrate. Unlike conventional charge-sensing detectors, the GFET-RS utilizes the sensitive dependence of graphene conductance on local change of the electric field, which can be induced by interaction of radiation with the underlying absorber substrate.

   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Coupling Assembly, Threadless, Flexible, Self-Locking, Fixed Cavity, High Conductivity, Self-Bonding, Part Specification

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
  • Aerospace Standard
  • AS7510A
  • Current
Published 2019-08-28 by SAE International in United States

This SAE Aerospace Standard (AS) defines the requirements for a threadless, flexible, high conductive, self-bonding coupling assembly which, when installed on defined ferrules, provides a flexible connection for joining ducting and components in pressurized fluid systems. The assembled coupling is designed to provide interchangeability of parts and components between qualified manufacturers for use from -65 to +265 °F at 130 psi nominal operating pressures and for the service life of the aircraft system.