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Rubber: Acrylonitrile-Butadiene Rubber (NBR), Fuel and Low Temperature Resistant, 60 - 70 Type “A” Hardness, For Seals in Fuel Systems

AMS CE Elastomers Committee
  • Aerospace Material Specification
  • AMS7271K
  • Current
Published 2019-12-03 by SAE International in United States

This specification covers an acrylonitrile-butadiene rubber in the form of molded rings, compression seals, O-ring cord, and molded-in-place gaskets for aeronautical and aerospace applications.

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Elastomer: Methyl/Methyl Vinyl Silicone, (MQ/MVQ), High Temperature/Gas Turbine Engine Oil/Phosphate Esther Hydraulic Fluid Resistant, High Strength/High Tear/High Modulus 55 to 65 Type “A” Hardness, for Products in High Temperature Environments/Gas Turbine Engine Oils

AMS CE Elastomers Committee
  • Aerospace Material Specification
  • AMS3306D
  • Current
Published 2019-11-26 by SAE International in United States

This specification covers a methyl or methyl vinyl silicone rubber material that can be used to manufacture product in the form of sheet, strip, tubing, extrusions, and molded shapes. This specification should not be used for molded rings, compression seals, O-ring cord, and molded in place gaskets for aeronautical and aerospace applications without complete consideration of the end use prior to the selection of this material.

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Design optimization for Engine mount

Prateek Sharma
VE Commercial Vehicles, Ltd.-Mahendra Parwal
  • Technical Paper
  • 2019-28-2540
Published 2019-11-21 by SAE International in United States
The mounting of an engine plays important role in controlling the vibration transmissibility, alignment of transmission unit within specific limit. Design of any mounting system mainly depends on stiffness, allowed deformation and transmissibility of force, natural frequency and size w.r.t space constraints etc. This paper helps to study the behavior of engine mount with different layer of rubber with defer stiffness. Firstly the design of front engine mount with single rubber layer according to space constraint in vehicle and then analysis is done to determine the deformation and various results using CAE technique. As per the results, design is modified with varying layer of rubber pad and again analysis is done with same boundary condition followed by improved results.
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REDUCTION OF STEERING VIBRATION WITH THE APPLICATION OF DYNAMIC TESTING AND ANALYSIS

John Deere India Pvt Ltd.-Amol Pimpale, Prashant Bardia, Pankaj Vaste, Rohit Pawar
  • Technical Paper
  • 2019-28-2421
Published 2019-11-21 by SAE International in United States
KEYWORDS: Steering System, Engine Vibrations, Dynamics, Modal Testing, Modal Analysis, ABSTRACT - In modern agriculture, the tractor’s use is indispensable and essential for various operations like cultivation, soil preparation, pulverization and many more. However, despite being efficient machines, tractors may be subjected to different level of vibrations in various parts of their structure. The vibration often plays the key cause of invalidation and component failures and also, affecting the ride and comfort. Since it is known that such vibration factors can affect the behavior in many ways, an understanding of their dynamic response is warranted. In this paper, case study related to reduction of steering system vibration is presented. Objective and Background: Vibration reduction is linked with the reduction either at source or on path. For such, it is necessary to know the reality of machines, component and mechanisms to mitigate the vibration levels on the tractor. From the testing and analysis of the components, it is possible to calculate the dynamic properties and vibration average level. The vibration reduction decreases the damages caused by…
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Acrylonitrile Butadiene (NBR) Rubber Aromatic Fuel Resistant 65 - 75

AMS CE Elastomers Committee
  • Aerospace Material Specification
  • AMS3215N
  • Current
Published 2019-11-05 by SAE International in United States
This specification covers a nitrile (NBR) rubber in the form of sheet, strip, tubing, extrusions, and molded shapes.
This content contains downloadable datasets
Annotation ability available
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Reducing Risk with Geometric Transition Extrusion

  • Magazine Article
  • TBMG-35498
Published 2019-11-01 by Tech Briefs Media Group in United States

In an effort to design smaller, more intricate and complicated medical devices without running afoul of increasingly stringent national and international regulations, many designers are looking to geometric transition extrusions manufactured of high consistency rubber (HCR) silicone. This process reduces total cost of ownership for the original equipment manufacturer while improving part quality and greatly enhancing the types of devices being sought by healthcare providers.

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Elastomer: Phenyl Methyl Vinyl Silicone (PVMQ) Low Temperature/Engine Oil Resistant High Strength/High Tear 55 to 65 Type “A” Hardness For Products in Aircraft Piston Engine Oil/Low Temperature Environments

AMS CE Elastomers Committee
  • Aerospace Material Specification
  • AMS3346H
  • Current
Published 2019-10-24 by SAE International in United States
This specification covers a phenyl vinyl silicone rubber material that can be used to manufacture product in the form of sheet, strip, tubing, molded shapes, and extrusions. This specification should not be used for molded rings, compression seals, O-ring cord, and molded in place gaskets for aeronautical and aerospace applications without complete consideration of the end use prior to the selection of this material.
This content contains downloadable datasets
Annotation ability available
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Minimum Operational and Maintenance Responsibilities for Aircraft Tire Usage

A-5C Aircraft Tires Committee
  • Aerospace Standard
  • ARP5265B
  • Current
Published 2019-10-17 by SAE International in United States
This SAE Aerospace Recommended Practice (ARP) sets forth criteria for the installation, inflation, inspection, and maintenance of aircraft tires as well as criteria for the maintenance of the operating environment so as to achieve the purpose stated in 1.1. (Definitions of terms related to aircraft tires are found in 2.2.)
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Test Slabs, High Strength, Fluorosilicone (FVMQ) 55 - 65

AMS CE Elastomers Committee
  • Aerospace Material Specification
  • AMS3217/7B
  • Current
Published 2019-10-16 by SAE International in United States
This specification covers a high strength fluorosilicone (FVMQ) rubber stock in the form of molded test slabs.
This content contains downloadable datasets
Annotation ability available
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Test Slabs, Acrylonitrile Butadiene (NBR-H) Medium-High Acrylonitrile, 65 - 75

AMS CE Elastomers Committee
  • Aerospace Material Specification
  • AMS3217/1C
  • Current
Published 2019-10-16 by SAE International in United States
This specification covers a standard acrylonitrile butadiene (NBR-H) rubber stock with medium-high acrylonitrile content in the form of molded test slabs.
This content contains downloadable datasets
Annotation ability available