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Viewing 1 to 30 of 2734
2015-07-06
Standard
AMS3833B
This specification covers a polyester and cotton blended broadcloth, chemically treated with a durable press finish and cured.
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).
2015-05-26
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.
2015-05-13
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
AMS3661D
This specification covers one grade of polytetrafluoroethylene (PTFE) resin in the form of film and film tape.
2015-05-04
WIP Standard
J576
This SAE Recommended Practice provides test methods and requirements to evaluate the suitability of plastic materials intended for optical applications in motor vehicles. The tests are intended to determine physical and optical characteristics of the material only. 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. Field experience has shown that plastic materials meeting the requirements of this document and molded in accordance with good molding practices will produce durable lighting devices.
2015-04-28
Standard
J863_201504
This SAE Recommended Practice describes methods for determining plastic deformation encountered in the forming or drawing of sheet steel.
2015-04-14
Technical Paper
2015-01-0476
Hyunkwon Jo, Youngseung Kim, Hyunchul Lee, Hyunmin Park, Suckin Song
Abstract Carmakers have tried to lower the vehicle weight for raising fuel efficiency. This trend involves a trade-off with the vehicle stiffness. In automobile interior parts, the thickness has needed to be decreased for the weight reduction but this makes the stiffness worse. A new approach for improving the stiffness due to the weight reduction is required and various optimization methods at early development stage have been introduced currently. However, it is difficult to apply optimization for the interior parts since many interior parts' structures generally depend on the design. But as studying the structure in detail, we discovered some factors that affect the performance without depending on design. The door trim is selected for optimization item because it has many characteristics of automobile interior parts. In our case study, the factors that improve the performance of door trim without changing design are considered as fastener position and flange rib layout.
2015-04-14
Technical Paper
2015-01-0698
Danielle Zeng, Li Lu, Jin Zhou, Yang Li, Z. Xia, Paul Hoke, Kurt Danielson, Dustin Souza
Abstract Long fiber reinforced plastics (LFRP) have exhibited superior mechanical performance and outstanding design flexibility, bringing them with increasing popularity in the automotive structural design. Due to the injection molding process, the distribution of long fibers varies at different locations throughout the part, resulting in anisotropic and non-uniform mechanical properties of the final LFRP parts. Images from X-ray CT scan of the materials show that local volume fraction of the long fibers tends to be higher at core than at skin layer. Also fibers are bundled and tangled to form clusters. Most of the current micromechanical material models used for LFRP are extended from those for short fibers without adequate validation. The effect of the complexity of long fibers on the material properties is not appropriately considered.
2015-04-14
Technical Paper
2015-01-1380
Kumar Kumar
Abstract According to the National Fire Protection Agency (NFPA), from the most recent available data, it was estimated that there were 164,000 highway vehicle fires in 2013 causing roughly 300 civilian fire deaths, 925 civilian fire injuries and $1.1 billion in property damages [1]. In a modern automobile, the plastics content is dramatically higher than it was in 1972, when Federal Motor Vehicle Safety Standard (FMVSS) 302 was implemented [2]. FMVSS 302 applies only to materials in the passenger compartment and was put in place to address accidental fires started from sources such as cigarettes, matches, etc. There has never been any regulation for the plastic materials used outside the vehicle interior, including those used in under-the-hood (UTH) applications, and this is true even for today's automobiles.
2015-04-14
Technical Paper
2015-01-1341
Hisaki Sugaya, Yoshiyuki Tosa, Kazuo Imura, Hiroyuki Mae
Abstract The explicit methods analysis solver LS-DYNA was used to create technology for simulating airbag deployment and plastic airbag lid tear-away in the front passenger seat. The present study clarified the mechanical properties and the transitions in fracture pattern of the material at low temperature plastic this way, an appropriate modeling method was developed and the prediction accuracy of the simulation of airbag lid tear-away on deployment was increased. Tensile testing of the material was carried out where there were differences in thickness of the tear-away section and the fracture characteristics were determined. A material model was created by analyzing changes in fracture characteristics and collapse patterns, taking into consideration the effects of strain and strain rate localization on fracture strain as well as ductile-brittle fracture transition. Next, airbags were subjected to the impactor testing.
2015-04-14
Technical Paper
2015-01-0593
Guobiao Yang, Changqing Du, Dajun Zhou, Xiaona Li, Yongjun Zhou, Biyu Ye, Xinfeng Shi, Yaqian Zheng, Junrui Li, Lianxiang Yang
Abstract Material formability is a very important aspect in the automotive stamping, which must be tested for the success of manufacturing. One of the most important sheet metal formability parameters for the stamping is the edge tear-ability. In this paper, a novel test method has been present to test the aluminum sheet edge tear-ability with 3D digital image correlation (DIC) system. The newly developed test specimen and fixture design are also presented. In order to capture the edge deformation and strain, sample's edge surface has been sprayed with artificial speckle. A standard MTS tensile machine was used to record the tearing load and displacement. Through the data processing and evaluation of sequence image, testing results are found valid and reliable. The results show that the 3D DIC system with double CCD can effectively carry out sheet edge tear deformation. The edge tearing test method is found to be a simple, reliable, high precision, and able to provide useful results.
2015-04-14
Journal Article
2015-01-0893
Michael D. Kass, Chris Janke, Raynella Connatser, Sam Lewis, James Keiser, Timothy Theiss
Abstract The compatibility of plastic materials used in fuel storage and dispensing applications was determined for an off-highway diesel fuel and a blend containing 20% bio-oil (Bio20) derived from a fast pyrolysis process. Bio20 is not to be confused with B20, which is a diesel blend containing 20% biodiesel. The feedstock, processing, and chemistry of biodiesel are markedly different from bio-oil. Plastic materials included those identified for use as seals, coatings, piping and fiberglass resins, but many are also used in vehicle fueling systems. The plastic specimens were exposed to the two fuel types for 16 weeks at 60°C. After measuring the wetted volume and hardness, the specimens were dried for 65 hours at 60°C and then remeasured to determine extent of property change. A solubility analysis was performed to better understand the performance of plastic materials in fuel blends composed of bio-oil and diesel.
2015-04-14
Journal Article
2015-01-0894
Michael D. Kass, Chris Janke, Timothy Theiss, James Baustian, Leslie Wolf, Wolf Koch
Abstract The compatibility of plastic materials used in fuel storage and dispensing applications was determined for a test fuel representing gasoline blended with 10% ethanol. Prior investigations were performed on gasoline fuels containing 25, 50 and 85% ethanol, but the knowledge gap existing from 0 to 25% ethanol precluded accurate compatibility assessment of low level blends, especially for the current E10 fuel (gasoline containing 10% ethanol) used in most filling stations, and the recently accepted E15 fuel blend (gasoline blended with up to15% ethanol). For the majority of the plastic materials evaluated in this study, the wet volume swell (which is the parameter most commonly used to assess compatibility) was higher for fuels containing 25% ethanol, while the volume swell accompanying E10 was much lower.
2015-04-13
Standard
AMSP46144A
This specification covers polycarbonate sheet.
2015-04-13
Standard
AMSP46112A
This specification covers polyimide sheet and strip with or without heat sealable FEP-fluorocarbon coatings.
2015-04-10
WIP Standard
AMS3084C
This specification covers a solid film lubricant in the form of a ready-to-use, sprayable suspension.
2015-03-19
WIP Standard
AMS3699B
This specification covers a two-part epoxy resin system in the form of a bisphenol "A" epoxy resin filled with fumed silica and carbon microspheres nd a separate curing agent.
2015-01-15
Standard
J1647_201501
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.
2015-01-14
Technical Paper
2015-26-0242
Rolf Bücker
Abstract Future doors require light weight, cost efficient and acoustic optimized solutions. Current steel doors offer only a small range of possibilities in these areas. With the use of aluminum doors the weight will be reduced but production complexity and costs will be increased. A modular door approach supports all of these future demands. Door modules have set milestones for door concepts in the past. Due to technological progress, door modules are more relevant in the current scenario. The use of reinforced plastics allows a high degree of design freedom with high integration of features.[2] In addition to weight reduction of up to 1.5kg per door the complete production process comes leaner with a higher grade of quality. The acoustic performance of a door system can be adjusted for noise reduction and improvement of the sound quality of speakers as illustrated. Functional integration is the key driver of weight and cost reduction
2015-01-08
Standard
AMS2491F
This specification covers the engineering requirements for preparing surfaces of polytetrafluoroethylene (PTFE) for bonding and the properties resulting from the treatment. This process has been used typically for rendering surfaces of parts capable of supporting a high strength adhesive bond. The bonding preparation can affect the electrical properties of the PTFE and this should be considered before using it for treatment of electronic components.
2014-11-03
WIP Standard
AIR4170B
This document describes the initial development, evolution and use of reticulated polyurethane foam as an explosion suppression material in fuel tanks and dry bays. It provides historical data, design practice guidelines, references, laboratory test data, and service data gained from past experience. The products discussed in this document may be referred to as 'Safety Foam,' 'Reticulated Polyurethane Foam,' 'Baffle and Inserting Material,' 'Electrostatic Suppression Material,' or 'SAFOAM.' These generic terms for the products discussed in this document are not meant to imply any safety warranty. Each individual design application should be thoroughly proof tested prior to production installation.
2014-10-30
Standard
AS90387C
Scope is unavailable.
2014-09-30
Technical Paper
2014-01-2365
Vinod Kumar Mannaru, Sunil M Makhe, Lori Stephens, Dinesh Kumar, Shivaprasad Goud
Abstract Vapor management system is critical to manage fuel tank capacity, evaporative emissions and pressure control for hybrid applications. Due to stringent emission norms and other regulations there has been lot of advancements in design and application of vapor control valves that are used in automotive fuel tanks. Continuous exposure of these valves to fuel vapor or fuel in some instances led to swelling of assemblies and poses serious threat to product functionality and maintaining required tolerances. Swelling of plastics in fuel is ideally a case of multi physics, which involves modeling of complex mass transfer phenomena. In this study a simple thermal analogous approach has been used to model swelling behavior by characterizing the basic plastic-fuel soaking through coefficient of hygroscopic swelling. Extensive testing has been performed with multiple plastic-fuel combinations with different shapes at different temperatures.
2014-09-16
Journal Article
2014-01-2253
Ralf Schomaker, Richard Pedwell, Björn Knickrehm
Abstract As a result of the increasing use of fibre reinforced plastic (FRP) components in a modern commercial aircraft, manufacturers are facing new challenges - especially with regards to the realisation of significant build rates. One challenge is the larger variation of the thickness of FRP components compared with metal parts that can normally be manufactured within a very narrow thickness tolerance bandwidth. The larger thickness variation of composite structures has an impact on the shape of the component and especially on the surfaces intended to be joined together with other components. As a result, gaps between the components to be assembled could be encountered. However, from a structural point of view, gaps can only be accepted to a certain extent in order to maintain the structural integrity of the joint. Today's state of the art technologies to close gaps between FRP structures comprise shimming methods using liquid and solid shims.
2014-09-12
Standard
SSB1_003A
This document is an annex to EIA Engineering Bulletin SAB-1, Guidelines for Using Plastic Encapsulated Microcircuits and Semiconductors in Military, Aerospace and Other Rugged Applications (the latest revision). This document provided reference information concerning acceleration factors commonly used by device manufacturers to model failure rates in conjunction with statistical reliability monitoring. These acceleration factors are frequently used by OEMs in conjunction with physics of failure reliability analysis to assess the suitability of plastic encapsulated microcircuits and semiconductors for specific end use applications.
2014-09-12
Standard
SSB1_001
This document is an annex to EIA Engineering Bulletin, SSB-1, Guidelines for Using Plastic Encapsulated Microcircuits and Semiconductors in Military, Aerospace and Other Rugges Applications (the latest revision). The scope of this document is to establish the recommended minimum qualification and monitoring testing of plastic encapsulated microcircuits and discrete semiconductors suitable for potential use in many rugged, military, severe, or other environments.
2014-09-12
Standard
SSB1_002
This document is an annex to EIA Engineering Bulletin SSB-1. Guidelines for Using Plastic Encapsulated Microcircuits and Semiconductors in Military, Aerospace and Other Rugged Applications. This document provides reference information concerning the environmental stresses associated with tests specifically designed to apply to (or have unique implications for) plastic encapsulated microcircuits and semiconductors, and the specific failures induced by these environmental stresses.
2014-08-20
Standard
AS25281B
Scope is unavailable.
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