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Critical wear assessment of AA8011/Hybrid metal matrix composites with surface amendment using Friction Stir process

Sri Krishna College of Engg. and Tech.-Soundararajan Ranganathan, Shri Vignesh Ramachandran, Ramprakash Palanivelu, Saravanakumar Ramasamy
  • Technical Paper
  • 2019-28-0096
To be published on 2019-10-11 by SAE International in United States
Friction Stir Process (FSP) was used for surface modification of steel, titanium, aluminum and magnesium based alloy has been considerably reviewed during the last decade. FSP can improve surface properties such as abrasion resistance, hardness, strength, ductility, corrosion resistance, fatigue life and formability without affecting the bulk properties of the material. The aluminum alloy having low ductility and softness characteristics are restricted because of their poor tribological properties. Preliminary studies reveal that, an ideal circumstance is to improve the aluminum alloy material life cycles by the way of strengthening the surface layer which can be modified through reinforcing nano particles through FSP. By the way, this experiment was carried out to obtain three set of samples like virgin AA8011, AA8011 with shape memory alloy and AA8011 along with shape memory alloy and silicon nitride during FSP under optimal process parametric condition. The improved distributions of nanoparticles were obtained after each FSP pass and progress in mechanical properties was observed. On the other hand to assess the tribological performance of prepared hard surface, three samples were…
 

Guide for Achieving Plating/Finishing Compatibility with Connectors and Accessories used in Electrical Wiring Interconnect Systems (EWIS)

AE-8C1 Connectors Committee
  • Aerospace Standard
  • ARP6903A
  • Current
Published 2018-08-29 by SAE International in United States
The intent of this ARP is to provide guidance to assist users in choosing compatible component finishes/platings to achieve the best corrosion resistance performance for compatible components/couples. This SAE Recommended Practice is intended as a guide toward standard practice and is subject to change to keep pace with experience and technical advances. A galvanic compatibility table is provided to assist with the compatible plating/finish selection. Specific plating performance parameters for each individual plating and each connector/accessory specification have also been provided to assist the product user with compatible plating/finish selection.
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Advances in Spintronic Devices

  • Magazine Article
  • TBMG-32503
Published 2018-08-01 by Tech Briefs Media Group in United States

Spintronic devices promise to solve major problems in today's computers, which use massive amounts of electricity to generate heat. This requires expending even more energy for cooling. By contrast, spintronic devices generate little heat and use relatively minuscule amounts of electricity. Spintronic computers would require no energy to maintain data in memory. They would also start instantly and have the potential to be far more powerful than today's computers.

 

Basics of Silicone Rubber Science and Technology

  • Professional Development
  • C1804
Published 2018-06-29
Silicone rubber is comprised of inorganic-organic polymers. These materials consist of an inorganic backbone with organic side groups attached to silicon atoms. This family of polymers possesses unmatched versatility giving the formulator and user multiple forms and methods to cross link the polymers into rubber materials having the widest service temperature range of any rubber material. This course is designed to provide the participant with a thorough understanding of silicone’s engineering characteristics. This class will take you from creation of silicone from sand through formulating the compound and the various methods by which silicone can be fabricated into useful service articles. Silicone rubber is used in the design and manufacture of automotive gaskets, O-rings, aerospace seals, industrial static seals, appliance seals, plate seals and molded and extruded seals and gaskets. The instructor will address the differences between high consistency rubber, caulks, and the various liquid silicone rubbers. This class is suitable for those individuals having various degrees of knowledge in silicone materials and applications.At the completion of the course the attendee will be able to:…
 

Key Factors for Choosing Silicone Solutions in Medical Device Lubrication

  • Magazine Article
  • TBMG-28752
Published 2018-04-01 by Tech Briefs Media Group in United States

In working with various medical equipment such as needles, syringes, trocars, cannulas, guide-wires, catheters, and valves, medical device designers must account for friction in the form of insertion, drag, and break-loose forces. A biocompatible silicone lubricant can significantly reduce friction at interfaces between components and between components and human tissue.

 

Bearing and Bushing Alloys

Metals Technical Executive Steering Committee
  • Ground Vehicle Standard
  • J459_201801
  • Current
Published 2018-01-10 by SAE International in United States
The bearing performance of steel backed half bearings, bushings, and washers is dependent on the properties and thickness of the lining alloy, the strength and dimensional stability of the steel backing (usually SAE 1010) and the strength of the bond between the lining alloy and the backing. This SAE Information Report is primarily concerned with the properties of the lining alloys used in automotive applications, in particular, the crankshaft bearings of the internal combustion engine.
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Wrought and Cast Copper Alloys

Metals Technical Executive Steering Committee
  • Ground Vehicle Standard
  • J461_201801
  • Current
Published 2018-01-09 by SAE International in United States
For convenience, this SAE Information Report is presented in two parts as shown below. To avoid repetition, however, data applicable to both wrought and cast alloys is included only in Part 1. Part I—Wrought Copper and Copper Alloys Types of Copper (Table 1) General Characteristics (Table 3) Electrical Conductivity Thermal Conductivity General Mechanical Properties (Table 10) Yield Strength Fatigue Strength Physical Properties (Table 2) General Fabricating Properties (Table 3) Formability Bending Hot Forming Machinability Joining Surface Finishing Color Corrosion Resistance Effect of Temperature Typical Uses (Table 3) Part II—Cast Copper Alloys Types of Casting Alloys Effects of Alloy Elements and Impurities General Characteristics (Table 11) Physical Properties (Table 12) Typical Uses (Table 11)
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Magnesium Alloys

Metals Technical Executive Steering Committee
  • Ground Vehicle Standard
  • J464_201712
  • Current
Published 2017-12-20 by SAE International in United States
This report on magnesium alloys covers those alloys which have been more commonly used in the United States for automotive, aircraft, and missile applications. Basic information on nomenclature and temper designation is given. Design data and many characteristics covered by a purchase specification are not included.
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Hard Anodic Coating on Aluminum Alloys Polytetrafluoroethylene (PTFE)-Impregnated or Codeposited

AMS B Finishes Processes and Fluids Committee
  • Aerospace Material Specification
  • AMS2482E
  • Current
Published 2017-07-17 by SAE International in United States
This specification establishes the requirements for a hard aluminum oxide coating, impregnated or codeposited with polytetrafluoroethylene (PTFE) on aluminum alloys.
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Guide for Achieving Plating/Finish Compatibility with Connectors and Accessories used in Electrical Wiring Interconnect Systems (EWIS)

AE-8C1 Connectors Committee
  • Aerospace Standard
  • ARP6903
  • Historical
Published 2017-03-17 by SAE International in United States
The intent of this ARP is to provide guidance to assist users in choosing compatible component finishes/platings to achieve the best corrosion resistance performance for compatible components/couples. This SAE Recommended Practice is intended as a guide toward standard practice and is subject to change to keep pace with experience and technical advances. A galvanic compatibililty table is provided to assist with the compatible plating/finish selection. Specific plating performance parameters for each individual plating and each connector/accessory specification have also been provided to assist the product user with compatible plating/finish selection.
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