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Viewing 1 to 30 of 5602
2015-04-22
Event
These sessions are seeking abstracts that specifically address the development of polymeric and composite materials for automotive interiors and exteriors, powertrain components, as well as structural and non-structural applications. Focus is on design, processes, bonding and manufacturing technologies, as well as lightweighting strategies. Abstracts on the analysis of functional performance of these materials are encouraged.
2015-04-22
Event
These sessions are seeking abstracts that specifically address the development of polymeric and composite materials for automotive interiors and exteriors, powertrain components, as well as structural and non-structural applications. Focus is on design, processes, bonding and manufacturing technologies, as well as lightweighting strategies. Abstracts on the analysis of functional performance of these materials are encouraged.
2015-04-14
Technical Paper
2015-01-1304
G Karthik, K V Balaji, Rao Venkateshwara, Bagul Rahul
This paper describes about recycled polyethylene terephthalate(R-PET) material for canopy strip part in automotive application. This recycled PET is a compounded material which is made out of used PET bottles and it is compounded with glass fibre to meet the product functional requirements. Canopy strip is a structural exterior part which requires better mechanical and thermal properties. The major function of this part is to act like a structural frame to hold the canopy sheet which is present at the both sides of the vehicle. Generally, PET bottles are use and throw product. PET is inert and takes an extremely long time to degrade so the empty bottles would also take an enormous amount of space in landfills which will directly affect rain water percolation. This compounded material is one of the sustainable solution for the environment where the waste bottles get converted to useful automotive parts.
2015-04-14
Technical Paper
2015-01-1122
Kengo Yabe, Toru Inagaki, Takashi Kondo
Seat vibration when the vehicle is idling and when it is in motion has been reduced by using a floating seat that controls the resonance frequencies. The resonance frequency is controlled by replacing the structures of the seat-mounting unit with floating structures using rubber bushings. Partly replacing the mounting unit with floating structures makes it possible to control the resonance frequencies of the entire seat. The issue of balancing vibration reduction with strength and durability and crash safety performance due to fitting rubber bushings to the seat-mounting unit was addressed using stopper structures optimized for each type of input. To adopt a floating seat into an actual vehicle, the floating structure and conventional foot bracket are combined. This combined foot bracket not only makes it easy to assemble floating structure into the seat, but also makes it possible to keep the seat weight almost the same as a conventional seat.
2015-04-14
Technical Paper
2015-01-0718
G Karthik, K V Balaji, Bathiry Sivaraman, Deshpande Samar
This paper describes about Vinyl ester based SMC (Sheet molding composite) material for Oil Sump part in automotive application. This Sheet moulding composite is a ready to mould glass-fibre reinforced vinyl ester material primarily used in compression moulding process. This vinyl ester resin is compounded with glass fibre to meet the product functional requirements. This Oil sump part is the structural under bonnet component which main purpose is to form the bottommost part of the crankcase and to contain the engine oil before and after it has been circulated through the engine. Generally, metal are most preferable material for this application. Here, Fibre filled Vinyl ester based thermoset resin (SMC) material has been explored which has excellent characteristics in terms of Tensile strength, Modulus, Impact strength, Dimensional stability, Chemical Resistance & High/Low temperature resistance which is suitable for Oil sump application.
2015-04-14
Technical Paper
2015-01-1380
Kumar Kumar
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. 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. 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. Combustible materials are roughly twice the weight and represent twice the heat content of the gasoline used in a typical passenger car today, constituting the major fire load.
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
The material parameters are very important in engineering application. In the automotive industry to large plastic deformation required parts stamping, the material parameters must be tested in the large plastic deformation. Among many of the parameters, aluminum edge tearing strength of the large plastic deformation of materials is an very important parameter. With traditional methods testing these parameters, there have many defects in the process of testing because of the complicated plastic deformation. In this paper, a novel method has been present to test the aluminum edge tearing strength with testing system of 3D digital image correlation with double CCD; at the same time, the special specimen and fixture were designed.
2015-04-14
Technical Paper
2015-01-1340
Yoichi Toyooka, Kiyoshi Hasegawa
Warping the exteriors of outer panels happens during the application of heat for hardening structural adhesives. Using aluminum and resin promote warping. Simulation of warping at the design stage and evaluating warping during mass-production require us to quantify the degree of warping to evaluate absolute values. These analytic values correspond to values from warping in panels, and display a correlation with visual examinations. Degree of displacement was an evaluative indicator for the quantification of warping. However, warping will not always be recognized due to gradual change in areas of the panel and cases where it will be recognized due to sudden change, despite that the absolute value of the degree of displacement might be the same. This research considered a warping simulation and evaluation using curvature as the evaluative indicator. Curvature is the gradient of change of the curved surface.
2015-04-14
Technical Paper
2015-01-1341
Hisaki Sugaya, Yoshiyuki Tosa, Kazuo Imura, Hiroyuki Mae
When airbags deploy they break a plastic tear part of the instrument panel. Timing and the tear fracture process change the airbag’s deployment behavior. The tear fracture process is dependent on the plastic’s temperature. We developed a tear fracture simulation . Because the tear line is composed of 1mm width and 0.5mm-3.0mm flute thickness, simulating the tear fracture process is difficult, even using two models: airbag deployment, and plastic fracture. Thickness determines the tear fracture. The strain distribution of its parts should be predicted accurately. The tear fracture using solid mesh, which is 0.1mm mesh pitch, is predictable. Although it is a very complicated model and has a high computation cost, it is not applicable to the mass production development. We increase the accuracy of the tear fracture process prediction using the shell mesh, which is applicable to the mass production development.
2015-04-14
Technical Paper
2015-01-0698
Danielle Zeng, Li Lu, Jin Zhou, Yang Li, Z. Xia, Paul Hoke, Kurt Danielson, Dustin Souza
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, which may reduce the effective aspect ratio. 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
2015-01-0695
Osamu Arao
Lately, increasing thermal radiation of electric products is demanding higher thermal conductivity of polymer composites. However, inaccurate observation of filler dispersion within the polymer do not allow for accurate quantification of Interface Thermal Resistance and subsequently prediction of thermal conductivity. Therefore optimum filler design could not be achieved. Firstly in this report, accurate stereoscopic filler dispersion was observed by FIB-SEM. FIB-SEM is the method which repeats regular interval polishing by FIB (Focused Ion Beam) and observing by SEM (Scanning Electric Microscope). Secondly, quantification of Interface Thermal Resistance could be achieved by thermal conduction CAE analysis using filler dispersion model observed by FIB-SEM. Thirdly, this Interface Thermal Resistance enabled prediction of the thermal bulk conductivity by Filler dispersion. Lastly, prediction made above could be validated within 9% by comparison of predicted value and measured value.
2015-04-14
Technical Paper
2015-01-0713
Helena Simmonds, Sophie Cox, Steve Nicholls, Geraint Williams
EU corporate average fleet CO2 emission targets of 95gkm-1 by 2020 mean that many automotive vehicles must become lighter in weight and some will be electrified. To address this challenge polymer composite materials are being explored for a number of vehicle applications. However, in some cases, operational requirements demand that these materials function above their glass transition temperature or heat deflection point. Intumescent coatings have traditionally been used in the construction industry to maintain the integrity of steelwork during a fire; this paper presents a novel experimental investigation of two intumescent technologies to thermally protect a glass fibre reinforced polymer composite, intended for use as a semi-structural vehicle component. The performance of selected coatings was assessed against critical thermal performance requirements using a heat gun to generate 500°C for 10 minutes.
2015-04-14
Technical Paper
2015-01-0715
Terry Lynn Chapin, Van Thomas Walworth
Purpose Balancing the fill sequence of multiple cavities in a rubber injection mold is desirable for efficient cure rates, optimized cure times, and consistent quality of all molded parts. The reality is that most rubber injection molds do not provide a consistent uniform balanced fill sequence for all the cavities in the mold – even if the runner and cavity layout is geometrically balanced. A new runner design technique, named “The Vanturi Effect”, is disclosed to help address the inherent deficiencies of traditional runner and cavity layouts in order to achieve a more balanced fill sequence. Design/Methodology/Approach Specialized molds for rubber injection were designed and built with a series of hot runner layouts and specialized cavity shapes. Regressive short shot techniques were employed to establish how the runners filled and how the cavities filed. The injection series included matched pairs of identical molds with identical runner and cavity layouts.
2015-04-14
Journal Article
2015-01-0894
Michael D. Kass, Chris Janke, Timothy Theiss, James Baustian, Leslie Wolf, Wolf Koch
Plastic materials are used ubiquitously in fuel infrastructure systems. A matrix of plastic specimens including thermoplastics and thermosetting resins were exposed to test fuels representing neat gasoline and E10. Previously the research team had evaluated plastic materials in test fuels representing E0, E25, E50, and E85. The lack of information for a 10 percent ethanol blend has prevented accurate interpolation of performance of these materials at low blend levels. The test fuel was an aggressive formulation derived following the SAE J1681 protocol. Four specimens were evaluated for each material type (three immersed in the test fuel liquid and one placed exposed to the vapor phase only). For each specimen exposed to the liquid fuel, the mass and volume change and hardness were measured for both wetted and dried conditions. The specimens exposed to the vapor phase were measured for hardness only.
2015-04-14
Journal Article
2015-01-0893
Michael D. Kass, Chris Janke, Raynella Connatser, Sam Lewis, James Keiser, Timothy Theiss
Plastic materials are used ubiquitously in fuel infrastructure systems. A matrix of plastic specimens including thermoplastics and thermosetting resins were exposed to No. 2 diesel fuel and a blend containing 20% bio-oil. Material types included permeation barriers, (PET, PPS, PVDF, and PTFE), Nylon, acetals, polyethylene and several types of fiberglass resin, Four specimens were evaluated for each material type (three immersed in the test fuel liquid and one placed exposed to the vapor phase only). The exposure time for each material was 16 weeks at 60oC For each specimen exposed to the liquid fuel, the mass and volume change and hardness were measured for both wetted and dried conditions. The specimens exposed to the vapor phase were measured for hardness only. Dynamic mechanical analysis was also performed for each material to determine the onset of the glass to rubber transition temperature.
2015-04-14
Technical Paper
2015-01-0710
Daniel Frazier, Kelly Williams, Javed Mapkar
Global vehicle emissions reduction initiatives have warranted the development and usage of new materials and processes not traditionally used in the automotive industry besides exclusive applications. To support this mandate, vehicle lightweighting via metal replacement and design optimization has come into sharp focus as a doubly rewarding effect; namely, a lighter vehicle system not only requires less road load power for motivation, but also allows for smaller, usually more efficient powertrain options, which tend to be more efficient still. The automotive industry has begun to embrace adapting composite materials that have typically been available only to the upper end of the market and specialty racing applications. The specific component detailed in this paper highlights the challenges and rewards for metal replacement with an injection molded, fiber reinforced plastic for usage in mass produced drivetrain systems, namely the Electronic Limited Slip Differential (eLSD).
2015-03-09 ...
  • March 9-10, 2015 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
Training / Education Classroom Seminars
Today's necessity for quickly delivering products to market limits product development time and leaves less room for error and 're-dos.' With so many plastic materials available, it is crucial that those involved in product design understand resin properties and how they affect part design and manufacturability. To help you make the best plastic choices the first time, this seminar provides an overview of polymer chemistry, explains the methods for testing properties of plastics and presents a method of systematic selection that will optimize your plastics material selection process.
2015-02-09
WIP Standard
ARP6889
A. This certification standard establishes the minimum requirements for training, examining, and certifying composite structure repair personnel. It establishes criteria for the certification of personnel requiring appropriate knowledge of the technical principles underlying the composite structural repairs they perform. Persons certified under this document may be eligible for licensing or certification/ qualification by an appropriate authority, in addition to this industry accepted aircraft composite repair technician certification and qualification. B. Persons who successfully complete the requirements of this certification standard are considered to be able to perform commercial aircraft composite repairs to composite structures in compliance with the manufacturers’ repair documentation or other acceptable repair methods. C. This document provides a method that a maintenance organization can use to qualify repair technicians
2015-02-04
WIP Standard
AMS3277J
This specification covers polythioether rubber fuel resistant sealing compounds supplied as a two-component system which cures at room temperature.
2015-02-04
Magazine
Rotary SI/CI combustion engines: A thing of the future? The internal combustion engine enjoys widespread use as an inexpensive and reliable power conversion system. While piston engines date back 150 years, various alternative engine architectures and cycles have been considered. Aftertreatment comes with challenging diagnosis Diagnosing engine and aftertreatment systems is forcing design teams to look at new ways to diagnose problems over long vehicle lifetimes. Taking on NVH reduction techniques A look at the enhanced durability benefits obtained by changing the polymer composition, manufacturing methods, and design optimization of a powertrain mount for an off-highway vehicle.
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
Viewing 1 to 30 of 5602

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