Criteria

Text:
Topic:
Display:

Results

Viewing 1 to 30 of 5680
2015-09-22
Event
The focus of this session is on current issues and new developments critical to the successful development, application, and measurement in aerospace applications. Topics include but are not limited to: Surface Preparation, Conversion Coatings, Primers, Topcoats, Specialty Coatings, Polymer Composite, Materials Development, Application and Processing Techniques (Tankline, Robotic Applications, Non-Spray and Spray), Adhesion Characteristics, Measurement Technologies, Environmental, Health and Safety, Manufacturability, and Engineering Performance.
2015-09-22
Event
The focus of this session is on current issues and new developments critical to the successful development, application, and measurement in aerospace applications. Topics include but are not limited to: Surface Preparation, Conversion Coatings, Primers, Topcoats, Specialty Coatings, Polymer Composite, Materials Development, Application and Processing Techniques (Tankline, Robotic Applications, Non-Spray and Spray), Adhesion Characteristics, Measurement Technologies, Environmental, Health and Safety, Manufacturability, and Engineering Performance.
2015-06-19
Standard
J200_201506
This classification system tabulates the properties of vulcanized rubber materials (natural rubber, reclaimed rubber, synthetic rubbers, alone or in combination) that are intended for, but not limited to, use in rubber products for automotive applications. NOTE 1: The SAE Committee on Automotive Rubber Specifications (CARS) has the sole responsibility for SAE J200. CARS Works closely with and receives input from ASTM Subcommittee D11.30 on Classification of Rubber Compounds with the goal to keep SAE J200 and ASTM D 2000 technically equivalent. Candidate materials presented for development of new tables or for inclusion in Tables A1 or A2 of SAE J200 or Table X1.1 of ASTM D 2000 shall be initiated with the SAE CARS Committee. The procedure to be followed is detailed in Appendix C of SAE J200. NOTE 2: This document may serve many of the needs of other industries in much the same manner as SAE numbered steels.
2015-06-16
Standard
AS83461/1A
SCOPE IS UNAVAILABLE.
2015-06-16
Standard
AS29561B
SCOPE IS UNAVAILABLE.
2015-06-15
Technical Paper
2015-01-2318
Wang Wenzhu, Liu Gang, Cheng Mianhong, Wei Jun
Abstract The hanger location layout is crucial, because it is related to the rubber hanger life, the natural frequency of the exhaust system and the force transferred to the body from the exhaust system. In order to solve the hanger layout problem of a new developed automotive exhaust system, the finite element method (FEM) of the automotive exhaust system including the powertrain was established. The correctness of the FEM model was verified by means of experimental modal analysis. Using average driving DOF displacement (ADDOFD) method, the hanger Location was arranged. The static and vibration analysis of the exhaust system was carried out to verify the hanger location layout. The weight analysis results indicate that the maximum displacement of the rubber hanger satisfies the design requirements. The static analysis results under 4g acceleration indicate the maximum stress meets the strength requirements of the material.
2015-06-15
Technical Paper
2015-01-2341
Marc Ingelmann, Holger Bickelmann
Abstract Microcellular Polyurethane is for many applications an alternative material to compact elastomers like rubber, with many beneficial and unique properties. Thus relates to the progressive load-deflection-characteristic, the amplitude-selective-damping, the good acoustic isolation and the high durability. The dynamic and static performance of the material, combined with the ability to work in limited packages, makes the usage beneficial for many automotive/transportation applications. The amplitude selective damping fits to the automotive requirements: small amplitudes are generating a low damping of the material; high amplitudes are increasing the damping. Translated in the characteristic for bushings and mounts, this results in a very good isolation for acoustic effects (e.g. rough road conditions) and a very good damping of vibrations (e.g. part- or system resonances).
2015-06-15
Technical Paper
2015-01-2190
Manchi Venkateswara Rao, S Nataraja Moorthy, Prasath Raghavendran
Abstract Mount development and optimization plays an important role in the NVH refinement of vehicle as they significantly influence overall driving experience. Dynamic stiffness is a key parameter that directly affects the mount performance. Conventional dynamic stiffness evaluation techniques are cumbersome and time consuming. The dynamic stiffness of mount depends on the magnitude of load, frequency of application and the working displacement. The above parameters would be far different in the test conditions under which the mounts are normally tested when compared to operating conditions. Hence there is need to find the dynamic stiffness of mounts in actual vehicle operating conditions. In this paper, the dynamic stiffness of elastomeric mounts is estimated by using a modified matrix inversion technique popularly termed as operational path analysis with exogenous inputs (OPAX).
2015-06-15
Technical Paper
2015-01-2204
Michael Funderburg
The ability of various plasticizers to impact the vibration damping properties of polyvinyl chloride (PVC) plastisols was investigated. A material must have good viscoelastic properties in order for it to be an effective vibration damper. However, it is evident that not all viscoelastic materials are good vibration dampers. Consider flexible (plasticized) PVC, for example. PVC formulations demonstrating the same glass transition temperature may have widely different damping capabilities. This presentation will show that the type of plasticizer substantially impacts the damping ability of the final PVC composite. Initially, flexible PVC formulations with varied plasticizers were screened via dynamic mechanical thermal analysis (DMTA) to determine which ones would likely have good damping properties. Formulations which exhibited promising results with DMTA were then tested via an Oberst bar damping test (SAE J1637).
2015-06-15
Journal Article
2015-01-2229
Benjamin Joodi, Scott Allen Noll, Jason Dreyer, Rajendra Singh
Abstract Elastomeric joints are utilized in many automotive applications, and exhibit frequency and excitation amplitude dependent properties. Current methods commonly identify only the cross-point joint property using displacement excitation at stepped single frequencies. This process is often time consuming and is limited to measuring a single dynamic stiffness term of the joint stiffness matrix. This study focuses on developing tractable laboratory inverse experiments to identify frequency dependent stiffness matrices up to 1000 Hz. Direct measurements are performed on a commercial elastomer test system and an inverse experiment consisting of an elastic beam (with a square cross section) attached to a cylindrical elastomeric joint. Sources of error in the inverse methodology are thoroughly examined and explained through simulation which include ill-conditioning of matrices and the sensitivity to modeling error.
2015-06-15
Journal Article
2015-01-2227
Scott Allen Noll, Benjamin Joodi, Jason Dreyer, Rajendra Singh
Abstract Elastomeric joints such as mounts and suspension bushings undergo broadband excitation and are often characterized through a cross-point dynamic stiffness measurement; yet, at frequencies above 100 Hz for many elastomeric components, the cross- and driving-point dynamic stiffness results significantly deviate. An illustrative example is developed where two different sized mounts, constructed of the same material and are shaped to achieve the same static stiffness behavior, exhibit drastically different dynamic behavior. Physical insight is provided through the development of a reduced order single-degree-of-freedom model where an internal resonance is explained. Next, a method to extract the parameters for the reduced order model from a detailed finite element bushing model is provided.
2015-06-15
Technical Paper
2015-01-2259
Jan Zuleeg
Abstract Tribological contacts between plastic or polymer materials can exhibit stick-slip behaviour that generates noise. Tribological properties can be influenced by lubricants such as bonded coatings, greases, and fluids. In this paper, well known theories about polymer friction from the literature will be shown to be useful in the development of new lubricants. Theoretical results have been validated with a Ziegler Stick-Slip Test Rig. The test methods presented in this paper are used in the development of lubricants for automotive applications (in the interior of the car including invisible lubricants developed for Class “A” surfaces).
2015-06-10
WIP Standard
AMSR83412/1A
The purpose of this specification sheet is to set up a standardized part numbering system for o-rings procured to MIL-R-83412(USAF), type 1.
2015-06-05
Standard
AMSR83485/1A
The purpose of this specification sheet is to set up a standardized part numbering system for o-rings procured to MIL-R-83485 (USAF).
2015-06-02
Standard
AS5728A
Scope is unavailable.
2015-05-26
Standard
J1647_201505
This SAE Recommended Practice provides test methods and requirements to evaluate the suitability of plastic optical materials for possible use in discharge forward lighting (DFL) devices in motor vehicles. These materials are typically used for lenses and reflectors. Separate testing is required for each combination of material, industrial coating, DFL light source, and device focal length. The tests are intended to determine physical and optical characteristics of the materials and coatings. Performance expectations of finished assemblies, including plastic components, are to be based on tests for lighting devices, as specified in SAE Standards and Recommended Practices for motor vehicle lighting equipment. Optical components exposed to weathering should also be subject to SAE J576.
2015-05-18
WIP Standard
AMS3833B
This specification covers a polyester and cotton blended broadcloth, chemically treated with a durable press finish and cured.
2015-05-18
WIP Standard
AMS3328C
This specification covers a fluorosilicone (FVMQ) rubber in the form of sheet, strip, tubing, extrusions, and molded shapes.
2015-05-18
WIP Standard
AMS3330C
This specification covers a fluorosilicone (FVMQ) rubber in the form of sheet, strip, tubing, extrusions, and molded shapes.
2015-05-18
WIP Standard
AMS3329C
This specification covers a fluorosilicone (FVMQ) rubber in the form of sheet, strip, tubing, extrusions, and molded shapes.
2015-05-18
WIP Standard
AMS3331C
This specification covers a fluorosilicone (FVMQ) rubber in the form of sheet, strip, tubing, extrusions, and molded shapes.
2015-05-13
Standard
AMS3529B
This specification covers an unpigmented grade of vinyl plastic, unfilled and not containing plasticizer, in the form of sheet and film.
2015-05-13
Standard
AMS3680D
This specification covers a silica fiber insulation in the form of felted pads, flat or in rolls, as ordered.
2015-05-13
Standard
AMS3661D
This specification covers one grade of polytetrafluoroethylene (PTFE) resin in the form of film and film tape.
2015-05-13
Standard
AMS3733C
This specification covers a highly filled epoxy potting compound supplied as a two-component system.
Viewing 1 to 30 of 5680

Filter

  • Range:
    to:
  • Year: