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Ethylene-Propylene-Diene (EPDM) Rubber, General Purpose, 45 - 55

AMS CE Elastomers Committee
  • Aerospace Material Specification
  • AMS3260D
  • Current
Published 2019-06-17 by SAE International in United States

This specification covers an ethylene propylene (EPDM) rubber in the form of sheet, strip, tubing, extrusions, and molded shapes.

 
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Ethylene Propylene Rubber, Phosphate Ester Resistant, 65 - 75

AMS CE Elastomers Committee
  • Aerospace Material Specification
  • AMS3253B
  • Current
Published 2019-06-17 by SAE International in United States

This specification covers an ethylene propylene elastomer in the form of molded sheet and shapes, color coded purple per ARP1527.

 
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Silicone Rubber Sponge, Closed Cell, Medium, Extreme Low Temperature

AMS CE Elastomers Committee
  • Aerospace Material Specification
  • AMS3193F
  • Current
Published 2019-06-14 by SAE International in United States

This specification covers a silicone rubber sponge in the form of sheet, strip, extrusions, and molded shapes.

 
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Silicone Rubber Sponge, Closed Cell, Medium

AMS CE Elastomers Committee
  • Aerospace Material Specification
  • AMS3195H
  • Current
Published 2019-06-14 by SAE International in United States

This specification covers a silicone rubber sponge in the form of sheet, strip, extrusions, and molded shapes.

 
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Silicone Rubber Sponge, Closed Cell, Firm, Extreme Low Temperature

AMS CE Elastomers Committee
  • Aerospace Material Specification
  • AMS3194F
  • Current
Published 2019-06-14 by SAE International in United States

This specification covers a silicone rubber sponge in the form of sheet, strip, extrusions, and molded shapes.

 
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Rubber, Synthetic, General Purpose, Fluid Resistant, 55 - 65

AMS CE Elastomers Committee
  • Aerospace Material Specification
  • AMS3220H
  • Current
Published 2019-06-11 by SAE International in United States

This specification covers a synthetic rubber in the form of sheet, strip, tubing, extrusions, and molded shapes.

 
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Cork and Rubber Composition Sheet; for Aromatic Fuel and Oil Resistant Gaskets

AMS CE Elastomers Committee
  • Aerospace Material Specification
  • AMSC6183B
  • Current
Published 2019-06-10 by SAE International in United States

This specification covers vulcanized sheet made of granulated cork uniformly dispersed in a synthetic rubber compound, for use in gaskets where aromatic fuel or oil resistance is required.

 
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Testing of Elastomer Icephobic Coatings in the AIWT: Lessons Learned

National Research Council-Gislain Chevrette, Damien Maillard, Lolei Khoun
National Research Council Canada-David Orchard
Published 2019-06-10 by SAE International in United States
A study has been conducted into icephobic properties of some highly durable “off-the-shelf” elastomer materials using a rotating ice adhesion test rig installed in the NRC’s Altitude Icing Wind Tunnel. This enabled the formation of ice at environmental conditions similar to those experienced during in-flight icing encounters. Initially, the tests indicated some very positive results with ice adhesion shear stress as low as 8KPa. On further examination, however, it became apparent that the test preparation process, in which the samples were cleaned with an ethanol alcohol solution, influenced the results due to absorption and prolonged retention of the cleaning fluid. The uptake of the ethanol alcohol solution by the elastomer was found to be a function of the surface temperature and remained absorbed into the coating during the ice accretion process changing the characteristics of the coating in such a way that led to a reduction in the ice/surface bond strength.
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Simulation Analysis of a Dual-Purpose Intelligent Mobile Platform for Highway and Railway

Nan Sun
University of Science & Development-Wenming Zhang
Published 2019-06-05 by SAE International in United States
Railways play a huge role in China's transportation industry. In order to ensure intelligence, advanced technology and high efficiency in functions such as railway inspection, rescue and transportation, a dual-purpose intelligent mobile platform for both roads and railways was developed. Due to the height limitation of this platform, resilient wheels and rubber dampers with short stroke are used as the suspension system for the rail chassis. Based on this special suspension form, the dynamic model of the whole platform is derived, and the simulation model of the whole platform is established in the simulation software. The effects of resilient wheels’ axial stiffness, radial stiffness and vertical stiffness, lateral stiffness of rubber dampers on the vertical and lateral stability of the platform were studied. It is found that the increase of the radial stiffness of the resilient wheels will deteriorate the vertical stability and lateral stability of the platform. The increase in the axial stiffness of the resilient wheels will deteriorate the vertical stability of the platform and the lateral stability will be improved. The increase…
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Snake-Inspired Robot

  • Magazine Article
  • TBMG-34572
Published 2019-06-01 by Tech Briefs Media Group in United States

Researchers have developed a new and improved snake-inspired soft robot that is faster and more precise than its predecessor.