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Accelerated Exposure of Automotive Interior Trim Materials Using Outdoor Under-Glass Controlled Sun-Tracking Temperature and Humidity Apparatus

Textile and Flexible Plastics Committee
  • Ground Vehicle Standard
  • J2230_202001
  • Current
Published 2020-01-15 by SAE International in United States

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 hour cycle. The humidity is controlled during the dark (night) portion of the cycle.

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Mitigating Wire Insulation Damage During Processing and Handling

AE-8A Elec Wiring and Fiber Optic Interconnect Sys Install
  • Aerospace Standard
  • AIR5717
  • Current
Published 2019-12-27 by SAE International in United States
Wire and cable products progress through a series of handling or operational steps from the time they leave the manufacturer, and until a finished harness or assembly is ready for installation on a vehicle. Throughout these many steps, environmental or processing conditions may be present which can generate damage detrimental to the wire or cable and/or its intended application.
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Effect of Tab Cooling on Large-Format Lithium-Ion Pouch Cells

Kasetsart University-Kanchai Theinglim, Poowanart Poramapojana
  • Technical Paper
  • 2019-01-2261
Published 2019-12-19 by SAE International in United States
Battery thermal management systems can extend service life time while operating Lithium-ion batteries in hot and humid climates. To study thermal and electrochemical behaviors of a large format cell for the tab cooling method, this paper presents a Dual Potential Multi-Scale Multi-Domain (MSMD) approach using the equivalent circuit model in ANSYS Fluent software. A pouch cell of 25 Ah consists of N1/3Mn1/3Co1/3O2 (NMC) cathode and graphite anode is used for the model validation. The simulation results present the effect of tab cooling temperature at different discharge rates as well as the effect of the cell surface area and its thickness.
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Vehicle Interior cleanliness tracker

Aptiv Components India Pvt Ltd.-Vijayalakshmi kr, Anitha Loganathan
  • Technical Paper
  • 2019-28-2466
Published 2019-11-21 by SAE International in United States
The future of mobility is being driven towards fully autonomous driving. As a result, people spend majority of the time in vehicles for chores other than driving. The focus of automotive makers shifts towards providing best-in-class passenger comfort. One of the least focused area in passenger comfort is vehicle interior cleanliness which requires periodic human intervention. An intelligent vehicle can outsmart a human by self-caring to maintain the cleanliness elements on floor, seat and roof. This paper addresses subjects like wetness, dirt and stains in the vehicle interior utilizing the capability of Interior sensing platform. An internally mounted camera in the vehicle can capture images of the interior and apply image processing techniques to identify the subjects mentioned above. The wetness on the floor mats can lead to moldy odor, corrosion, failure of the electronic components in the car. Over a period, the vehicle upholstery or seats absorb the dirt and stains and lead to foul smell. HVAC can be used for drying the interior as appropriately detected by the system. A modern system to…
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Durability Performance of Polymer Electrolyte Membrane Fuel Cells under Open-Circuit Voltage

Tongji University-Xiangyang Zhou, Xiaolang Chen, Bing Li, Cunman Zhang
Published 2019-11-04 by SAE International in United States
Polymer electrolyte membrane fuel cells (PEMFCs) are a good candidate for fuel cell electric vehicles (FCEVs) due to their high efficiency, high power density and zero-emission. However, the lifetime is one of the main barriers to overcome before their commercialization. The durability testing methods for PEMFCs are main include electrocatalyst cycle, catalyst support cycle, membrane electrode assembly (MEA) chemical stability, membrane mechanical cycle and so on. In addition, there is little research about MEA chemical stability test, which applies a continuous open-circuit voltage (OCV) to produce more free radicals and these will have a bad influence on PEMFCs. Based on this, the durability of PEMFC was studied under OCV operation at 30% relative humidity (RH), 90 °C and 150 kPa inlet pressure. The electrochemical performances such as in-situ cyclic voltammetry (CV), linear sweep voltage (LSV) and cell polarization were used to evaluate the durability of PEMFC. Scanning electron microscopy (SEM) was applied to identify the degradation of polymer electrolyte membrane (PEM). After 168 h of durability test, the open circuit voltage decreases from 0.96 to…
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Qualifying Aftermarket Two-Component Structural Foams

Motor Vehicle Council
  • Ground Vehicle Standard
  • J2621_201910
  • Current
Published 2019-10-28 by SAE International in United States
This recommended practice provides a guideline for qualifying automotive aftermarket, two-component structural foams, and defines a classification system for such foams.
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Paint System, Fluorescent, Removable, for Aircraft Application

AMS G8 Aerospace Organic Coatings Committee
  • Aerospace Material Specification
  • AMSP21600B
  • Current
Published 2019-10-28 by SAE International in United States
This specification establishes the requirements for a high visibility, durable, exterior fluorescent coating system consisting of a pigmented fluorescent coating with a clear protective overcoat containing a weathering stabilizer. This coating system is capable of being removed without softening the permanent undercoats.
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Wire and Cable Marking Process, UV Laser

AE-8A Elec Wiring and Fiber Optic Interconnect Sys Install
  • Aerospace Standard
  • AS5649A
  • Current
Published 2019-10-21 by SAE International in United States
This standard is applicable to the marking of aerospace vehicle electrical wires and cables using ultraviolet (UV) lasers. This standard specifies the process requirements for the implementation of UV laser marking of aerospace electrical wire and cable and fiber optic cable to achieve an acceptable quality mark using equipment designed for UV laser marking of identification codes on aerospace wire and cable. Wiring specified as UV laser markable subject to AS4373 and which has been marked in accordance with this standard will conform to the requirements of AS50881.
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Squeak Behavior of Plastic Interfaces

Auto & Truck Services-Lokesh Pancholi
Published 2019-10-11 by SAE International in United States
Automotive is getting advanced and increasingly comfortable with new technologies and demand from customers. Car cabins have become much quieter as compared yesteryears. Where the outside noise has gone down significantly, secondary and small noises like squeak and rattle have become more prominent. Squeak though a transient and short lived, is an unexpected noise and often considered as an irritant. There is an increasing need felt to eliminate squeak completely from the interiors of the vehicle where choice materials play dominant role. This article briefs about the work done on evaluating different plastic interfaces for squeak behavior using Stick-Slip method. Some plastic surfaces were even tested with other interfaces like leather and vinyl coated fabrics. Choice of plastic material and interfaces to be tested were shortlisted after studying many different vehicles and benchmarking. Difference in squeak was also studied with respect to external conditions like temperature, velocity of interfaces, normal force, humidity and roughness. The result of any test is measured in the form of Risk Priority Number (RPN) where higher the RPN, higher is…
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Fused Filament Fabrication, Material for

AMS AM Additive Manufacturing Non-Metallic
  • Aerospace Material Specification
  • AMS7101
  • Current
Published 2019-10-09 by SAE International in United States
This specification establishes the minimum requirements for Fused Filament Fabrication (FFF) feedstock.
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