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Viewing 1 to 30 of 5610
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
2015-01-0718
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
2015-01-1340
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
2015-01-0695
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
2015-01-0698
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
2015-01-0715
Terry Lynn Chapin, Van Thomas Walworth
Abstract 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. Comparative analysis of molded runner samples reveals a significant and positive improvement in runner and cavity fill balancing when the Vanturi Effect is integrated into the runner design.
2015-04-14
Technical Paper
2015-01-0713
Helena Simmonds, Sophie Cox, Steve Nicholls, Geraint Williams
Abstract To meet corporate CO2 emission targets polymer composites are being explored for light-weighting vehicle applications. Operational requirements may demand that such materials function above glass transition temperatures or heat deflection points. Intumescent coatings are traditionally used in construction to protect steelwork during fire. This paper presents a novel experimental investigation of two intumescent technologies to thermally protect a reinforced polyamide, for use as a semi-structural vehicle component. Coatings were assessed against the thermal requirement to withstand 500°C for 10 minutes. The differences in performance observed between water and epoxy based coatings as well as when an insulation layer was introduced are reported. Ultimate Tensile Stress (UTS) and modulus values were obtained at −40°C, ambient, and 85°C for uncoated specimens before and after thermal cycling.
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).
2015-04-14
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
Technical Paper
2015-01-1122
Kengo Yabe, Toru Inagaki, Takashi Kondo
Abstract Seat vibration when a vehicle is idling or in motion is an issue in automobile development. In order to reduce this vibration, dynamic damper or inertia mass is widely used. These countermeasures increases vehicle's weight and causes bad fuel-efficiency. Some new ways to reduce the vibration without weight increase are needed. One of that is the floating seat. Seat vibration has been reduced by controlling seat resonance frequencies. In order to control resonance frequency, the structures of the seat-mounting unit are replaced with floating structures using rubber bushings. It was demonstrated that partially 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 caused by the fitting of rubber bushings to the seat-mounting unit was addressed using stopper structures optimized for each type of input.
2015-04-14
Journal Article
2015-01-0690
Salah H. R. Ali, Badr S. N. Azzam
Abstract The aim of this research is to assess and develop a polymeric material consisting of a mixture of high-density polyethylene (HDPE) and ultra- high- molecular- weight polyethylene (UHMWPE) reinforced by carbon-nanotube (CNT) by optimizing the mixing concentration of the three constituents. This optimized mixture is accomplished by using a melt extruder-mixing process. An experimental evaluation for accurate assessment of the developed nanocomposite material characteristics is achieved by using a universal tensile test machine and a plint-tribometer pin-on-disc machine. Moreover, the hardness of the material surface and its surface topography are assessed by a hardness tester machine and SEM technique, respectively. Developed samples for testing are classified into two groups of nanocomposites. The first group is created through mixing two pure polymeric UHMWPE and HDPE with different mass ratios of each.
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
2015-01-0888
Michael D. Kass, Chris Janke, Raynella Connatser, Sam Lewis, James Keiser, Timothy Theiss
Abstract The compatibility of elastomer 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. (This fuel blend is not to be confused with B20, which is a blend of diesel fuel with 20% biodiesel.) The elastomer types evaluated in this study included fluorocarbon, fluorosilicone, acrylonitrile rubber (NBR), styrene butadiene rubber (SBR), polyurethane, neoprene, and silicone. All of these elastomer types are used in sealing applications, but some, like the nitrile rubbers are also common hose materials. The elastomer specimens were exposed to the two fuel types for 4 weeks at 60°C. After measuring the wetted volume and hardness, the specimens were dried for 65 hours at 60°C and then remeasured. 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.
2015-04-14
Journal Article
2015-01-0722
Mathieu Imbert
Abstract High speed Reactive Resin Transfer Moulding (RTM) is a promising process for the mass production of structural composite parts in the automotive industry. In this technology a low viscosity reactive thermosetting or thermoplastic polymer is injected in a fibrous preform made of glass or carbon fibres fabrics. Continuous fibre reinforcements contain two types of volume to be impregnated: microscopic voids inside the fibre tows and mesoscopic ones between the tows. Because of this double-scale structure, the saturation of fabrics with bi-disperse porous structure is not instantaneous during resin injection. The use of reactive resins aims to reduce both the resin viscosity and part cycle time by beginning curing during the filling stage. However the chemical reactions generate significant evolution in the temperature, composition and properties of the resin during injection, which can affect the filling and quality of the part.
2015-03-25
Standard
AMS3377A
This specification covers a synthetic rubber sealing compound which is electrically conductive when used in a faying surface, contains corrosion inhibitors, and supplied as a two-component system which cures at room temperature, suitable for application by extrusion gun or spatula.
2015-03-24
WIP Standard
J1647
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.
2015-03-19
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.
Viewing 1 to 30 of 5610

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