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Viewing 1 to 30 of 2762
2016-04-27
WIP Standard
AMS3217/4C
This specification covers a standard fluoroelastomer (FKM) rubber stock in the form of molded test slabs.
2016-04-25
WIP Standard
AMS3644H
This specification covers a polyimide plastic in the form of isostatically molded rod, bar, and tube, unidirectionally molded plaque, and direct formed parts.
2016-04-13
WIP Standard
J1961
This test method specifies the operating procedures for using a solar fresnel reflector apparatus for the accelerated exposure of various automotive materials. Sample preparation, test durations, and performance evaluation procedures are covered in material specifications of the different automotive manufacturers.
2016-04-05
Technical Paper
2016-01-0286
Changsheng Wang, Haijiang Liu, Tao Zhang, Zhiyong Zhu, Liang Liu
Abstract With the increasing development in automotive industry, finite element (FE) analysis with model bias prediction has been used more and more widely in the fields of chassis design, body weight reduction optimization and some components development, which reduced the development cycles and enhanced analysis accuracy significantly. However, in the simulation process of plastic fuel tank system, there is few study of model validation or verification, which results that non-risky design decisions cannot be enhanced due to too much consuming time. In this study, to correct the discrepancy and uncertainty of the simulated finite element model, Bayesian inference-based method is employed, to quantify model uncertainty and evaluate the simulated results based on collected data from real mechanical tests of plastic fuel tanks and FE simulations under the same boundary conditions.
2016-04-05
Journal Article
2016-01-0514
Yan Meng, Yong Xia, Qing Zhou, Shaoting Lin
Abstract This article is concerned with identification of true stress-strain curve under biaxial tension of thermoplastic polymers. A new type of biaxial tension attachment was embedded first in a universal material test machine, which is able to transform unidirectional loading of the test machine to biaxial loading on the specimen with constant velocity. Cruciform specimen geometry was optimized via FE modeling. Three methods of calculating true stress in biaxial tension tests were compared, based on incompressibility assumption, linear elastic theory and inverse engineering method, respectively. The inverse engineering method is more appropriate for thermoplastic polymers since it considers the practical volume change of the material during biaxial tension deformation. The strategy of data processing was established to obtain biaxial tension true stress-strain curves of different thermoplastic polymers.
2016-04-05
Journal Article
2016-01-0515
Jee Young Youn, Seok Hwan Kim, Yong Sun (Steven) Jin
Abstract Impact resistance of plastic underbody parts was studied using simulated injection-molded specimen which can be tested according to different types of material used, injection molding variants like position and number of injection molding gates, and features of ribs. Material applied was glass fiber reinforced polyamide which can be used in underbody parts. Test was performed using several combinations of injection molding gates and rib types. From the test result, optimal design guide for plastic underbody parts was determined. Also, new high impact resistant plastic material made of glass fiber reinforced polyamide 66 (PA66) and polyamide 6 (PA6) alloy was developed and the material properties useful for CAE were determined. As a case study, oil pan and muffler housing were designed following the optimal design guide and CAE. And the reliability of the sample muffler housing designed was verified.
2016-04-05
Technical Paper
2016-01-0418
Xin Xie, Danielle Zeng, Junrui Li, Jeffrey Dahl, Qiancheng Zhao, Lianxiang Yang
Abstract Polymer plastics are widely used in automotive light weight design. Tensile tests are generally used to obtain material stress-strain curves. Due to the natural of the plastic materials, it could be elongated more than several hundred percent of its original length before breaking. Digital Image Correlation (DIC) Analysis is a precise, full field, optical measurement method. It has been accepted as a practical in-field testing method by the industry. However, with the traditional single-camera or dual-camera DIC system, it is nearly impossible to measure the extreme large strain. This paper introduces a unique experimental procedure for large elongation measurement. By utilization of quad-camera DIC system and data stitch technique, the strain history for plastic material under hundreds percent of elongation can be measured. With a quad-camera DIC system, the correlation was conducted between two adjacent cameras.
2016-04-05
Journal Article
2016-01-0497
Brian Falzon, Wei Tan
Abstract The development of the latest generation of wide-body carbon-fibre composite passenger aircraft has heralded a new era in the utilisation of these materials. The premise of superior specific strength and stiffness, corrosion and fatigue resistance, is tempered by high development costs, slow production rates and lengthy and expensive certification programmes. Substantial effort is currently being directed towards the development of new modelling and simulation tools, at all levels of the development cycle, to mitigate these shortcomings. One of the primary challenges is to reduce the extent of physical testing, in the certification process, by adopting a ‘certification by simulation’ approach. In essence, this aspirational objective requires the ability to reliably predict the evolution and progression of damage in composites. The aerospace industry has been at the forefront of developing advanced composites modelling tools.
2016-03-29
WIP Standard
J913
This SAE Standard is applicable for determining the wicking characteristics of seat fabrics, convertible tops, headlining, fiber padding, and other automotive textile materials.
2016-03-29
WIP Standard
J315
This SAE Standard provides test methods for determining the critical characteristics of basic or finished fiberboard products. Where applicable, methods of test developed by SAE and ASTM have been referenced.
2016-03-28
WIP Standard
J323
This SAE Recommended Practice is applicable for determining the cold characteristics of flexible plastic materials, as applicable. It consists of three different methods for determining low-temperature properties of materials depending on type of material and end use.
2016-03-28
WIP Standard
J855
This method of test applies to the measurement of elastic and recovery properties of materials after being subjected to a low-static load.
2016-03-23
WIP Standard
J2230
This SAE Standard specifies operating procedure for the exposure of automotive interior trim materials in an outdoor behind-glass apparatus in which the temperature is controlled in a 24 h cycle. The humidity is controlled during the dark (night) portion of the cycle. Specimen preparation, test durations, and performance evaluation procedures are covered in material specifications of the different automotive manufacturers.
2016-03-16
WIP Standard
J1530
This test method covers determination of abrasion resistance, fiber loss and bearding resistance of automotive carpet materials.
2016-03-16
WIP Standard
J948
These methods of test are applicable for determining the resistance to snagging and abrasion of automotive bodycloth, vinyl and leather.
2016-03-01
WIP Standard
AMS1535D
This specification covers a cleaner for plastics in the form of a liquid. This cleaner has been used typically for removing soils, contaminants, and residues from interior and exterior surfaces of aircraft windows by manual application, but usage is not limited to such applications.
2016-02-29
WIP Standard
AS90387D
Scope is unavailable.
2016-02-01
Technical Paper
2016-28-0224
Akshay Ramesh Karjol, Ajay Virmalwar
Abstract Reducing overall weight of the vehicle is one of the main areas of research in automotive industries. Current trend, CO2 reduction, is a major incentive for this process. For this, engineers are finding out various ways to reduce weight to strength ratio of the different components. The immediate pay-off of such developments is lower fuel consumption, which is followed by lower CO2 emissions. For this engineers opt for, use of low-density and high-strength materials, along with optimization of the geometry of the components. One of the solutions is to convert metal parts to plastics which have desired properties. The main focus of this paper is to convert the sheet metal brackets to plastic brackets which will ultimately reduce weight and production cost associated with automobile. In this paper, an optimum process, using Topology optimization and Mold Flow Analysis, is developed to convert sheet metal bracket to plastic bracket.
2015-12-29
WIP Standard
J361
This SAE Recommended Practice applies to parts and materials used in vehicle manufacture which are intended to be acceptable color matches to a specified standard. This document is intended for use with parts or materials which are opaque or nearly so. Materials covered by this document include topcoat paint finishes, interior soft trim, interior and exterior hard trim, and exterior film and flexible trim. The intent of this document is to precisely specify procedures for the visual evaluation of appearance of colored materials or parts incorporated in the manufacture of vehicles. The document provides a consistent engineering practice for the determination of visual color difference between materials or parts of the same or like materials. A suitable fixture providing daylight, fluorescent, and horizon lighting conditions is necessary for this evaluation.
2015-12-14
WIP Standard
J2412
This test method specifies the operating procedures for a controlled irradiance, xenon arc apparatus used for the accelerated exposure of various automotive interior trim components. Test duration as well as any exceptions to the specimen preparation and performance evaluation procedures contained in this document, are covered in material specifications of the different automotive manufacturers. Any deviation to this test method, such as filter combinations, is to be agreed upon by contractual parties.
2015-12-02
Standard
AS33391B
No scope available.
2015-11-03
Video
Dow is driving innovation for the future. From the structural integrity of vehicles, to driver safety features, to enhanced durability, Dow science and technology ensures sustainable solutions to anticipate market demand.
2015-10-22
Standard
AMS2535B
This specification covers requirements for poly-monochloro-para-xylylene coatings. Primarily for use as a secondary moisture barrier coating on hybrid microcircuit substrates and on active monolithic devices. Additionally, the coating immobilizes undesirable particles remaining in sealed microcircuits and enhances to some degree the strength of fine wire interconnections.
2015-10-13
WIP Standard
AMSS83318C
This specification covers two-component polysulfide sealing compounds, temperature resistant, for use from -65 to 250 °F (-54 to 121 °C), low temperature curing from 20 °F (-13 °C) minimum, for quick repair of integral fuel tanks and fuel cell cavities. During application, sealing compound shall exhibit suitable, fluid consistency.
2015-10-01
Standard
AS23190C
AS23190 is a procurement specification that covers a series of plastic and metal components and devices used for the tying, positioning, and supporting cable, cable assemblies, wire, and wire bundles in electrical, electronic and communication equipment, and in interconnection systems.
2015-09-22
Technical Paper
2015-36-0112
Fernando de Azevedo Silva, Erick Siqueira Guidi
Abstract The union of parts by using bolts is one of the most used, which combines versatility and low cost, and the failure of a single bolt can cause failure of the entire structure or machine. Several factors influence the effectiveness of these bolted joints, including the material of the washer. During the process of applying torque to the bolted joint, an elastic deformation occurs in the bolt and a plastic deformation in the washer while applying the external force. This plastic deformation which occurs in the washer causes a reduction of the elastic deformation of the bolt and, consequently, of the assembly torque, and depending on the values of external loading and deformation of the washer occurs the separation of the pieces of the joint, causing overload in the bolt and a reduction in your fatigue life. The use of numerical simulation using the finite element method makes it possible to change the model variables, such as the geometry and materials of the components.
Viewing 1 to 30 of 2762

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