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Natural and Artificial Weathering of Automotive Leather, Leatherette and Textile

Mahindra & Mahindra, Ltd.-Elavarasan Palaniappan
  • Technical Paper
  • 2019-28-0091
To be published on 2019-10-11 by SAE International in United States
This paper presents the natural and artificial weathering behavior of different soft skin materials such as leather, leatherette and textiles used for automotive seat cover applications. The objective of this study was to understand the physical and aesthetical changes occurring at these flexible materials under sun UV light and heat exposure. The natural weathering study under glass exposure was carried out as per ASTM G 24 at natural weathering site location and artificial weathering as per SAE J2412 at lab. The material was observed for surface changes such as color, texture, crack and physical changes like flexibility and hardness during the exposure. The sample exposed at natural weathering data for every 15 days were recorded, and artificial weathering for every 100 hours were recorded. Light and dark color materials were tested to understand the effect of color and UV light resistance as well as various textures were studied to understand the effect of various texture and texture retention under UV.The study was also carried out at two different period in a year and the data…

Textile Cools or Insulates Automatically

  • Magazine Article
  • TBMG-34915
Published 2019-08-01 by Tech Briefs Media Group in United States

Researchers have created a fabric that automatically regulates the amount of heat that passes through, depending on conditions; for example, when conditions are warm and moist — such as those of a sweating body on a summer day — the fabric allows infrared radiation (radiant heat) to pass through. When conditions become cooler and drier, the fabric reduces the heat that escapes. Infrared radiation is a primary way the body releases heat and is the focus of this new technology.

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Test Method for Measuring Wet Color Transfer Characteristics

Textile and Flexible Plastics Committee
  • Ground Vehicle Standard
  • J1326_201906
  • Current
Published 2019-06-25 by SAE International in United States
This procedure describes a method of measuring the resistance to wet color transfer of materials such as textiles, leather, and composites.
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Self-Powered, Washable, Wearable Displays

  • Magazine Article
  • TBMG-34632
Published 2019-06-01 by Tech Briefs Media Group in United States

Clothing usually is formed with textiles and has to be both wearable and washable for daily use; however, smart clothing has had a problem with its power sources and moisture permeability, which causes the devices to malfunction. To solve this problem, a textile-based, wearable display module technology was developed that is washable and does not require an external power source.

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New platform, chic sheetmetal for tech-centric 2020 Range Rover Evoque

Automotive Engineering: May 2019

Stuart Birch
  • Magazine Article
  • 19AUTP05_16
Published 2019-05-01 by SAE International in United States

The new-generation Range Rover Evoque is loaded with luxury and lots of electronic safety systems to bring comfort, in every sense, to its driver. But why does it still need the outlandish offroad prowess Jaguar Land Rover demonstrated at its media launch when most examples are likely to spend their working lives in the city or cruising freeways?

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Environmental Degradation of Textiles

AGE-2 Air Cargo
  • Aerospace Standard
  • AIR1490C
  • Current
Published 2019-04-24 by SAE International in United States
Since cargo restraint devices made with textiles should have a predictable service life, there should be data available so that predictions can be made. This document compiles available information on textiles of the types used in air cargo restraint devices and reviews the degradation characteristics of each. Textiles are used primarily in cargo restraint nets on air cargo pallets and nonstructural containers, restraint nets installed in cargo aircraft, and similar applications.
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Investigating Collaborative Robot Gripper Configurations for Simple Fabric Pick and Place Tasks

University of Windsor-Morteza Alebooyeh, Bowen Wang, Ruth Jill Urbanic, Hamed Kalami
Wayne State University-Ana Djuric
Published 2019-04-02 by SAE International in United States
Fiber composite materials are widely used in many industrial applications - specially in automotive, aviation and consumer goods. Introducing light-weighting material solutions to reduce vehicle mass is driving innovative materials research activities as polymer composites offer high specific stiffness and strength compared to contemporary engineering materials. However, there are issues related to high production volume, automation strategies and handling methods. The state of the art for the production of these light-weight flexible textile or composite fiber products is setting up multi-stage manual operations for hand layups. Material handling of flexible textile/fiber components is a process bottleneck. Consequently, the long term research goal is to develop semi-automated pick and place processes for flexible materials utilizing collaborative robots within the process. Collaborative robots allow for interactive human-machine tasks to be conducted. The immediate research is to assess standard and modified grippers for basic material pick and place tasks via sets of experimental tasks. Pick and place experiments with flat carbon fiber fabric and two gripper configurations are tested with a YuMi 14000 ABB collaborative robot to determine…
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Q&A: Dr. Patrick Hopkins, Professor, University of Virginia, Charlottesville

  • Magazine Article
  • TBMG-33233
Published 2018-11-01 by Tech Briefs Media Group in United States

Professor Hopkins and University of Virginia colleagues — in collaboration with materials scientists at Penn State, the University of Maryland, and the National Institute of Standards and Technology — have studied a material that can dynamically regulate its thermal properties, switching back and forth between insulating and cooling based on the amount of water that is present.

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Environmental Degradation of Composite Materials

AGE-2 Air Cargo
  • Aerospace Standard
  • ARP6287
  • Current
Published 2018-10-18 by SAE International in United States
In accordance with § 4.11 of AS36100, materials used in the construction of pallets, nets, and containers shall take into account the effects of environmental conditions, such as temperature, humidity, and UV degradation, expected in service. In accordance with (E)TSO-C90, the applicant shall consider environmental degradation due to aging, ultra-violet (UV) exposure, weathering, etc., for any materials used in the construction of pallets, nets, and containers. The purpose of this Aerospace Recommended Practice (ARP) is to provide guidelines for the basic requirements to be considered regarding environmental degradation effects when qualifying composite materials in the design to fulfill the (E)TSO-C90 Minimum Performance Standard. Material qualification is the verifying of a materials attributes and characterizations, which are typically determined through testing. Material variances related to raw materials and manufacturing processes are not part of this Aerospace Recommended Practice (ARP), nor is damage tolerance. However, these variances cannot be neglected, as all variances shall be considered when deciding the test factors for environmental effects.
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Metal Clad Fibers for Electrical Shielding and Harness Overbraid

AE-8D Wire and Cable Committee
  • Aerospace Standard
  • AIR5464A
  • Current
Published 2018-08-23 by SAE International in United States
Over the past two and one-half decades several metal clad fibers and fabrics have been developed to provide aerospace vehicle designers with a conductive, lighter weight alternative to coated copper, coated stainless steel and steel wire used for cable and wire shielding and harness overbraids on electrical cables. Several of these candidates have been unable to provide the strength or thermal stability necessary for the aerospace environment. However, several polymer-based products have shown remarkable resistance to the rigorous environment of aerospace vehicles. Concurrent with these fiber developments, there have been changes in the structures of aerospace vehicles involving greater use of nonmetallic outer surfaces. This has resulted in a need for increased shielding of electrical cables which adds substantial weight to the vehicle. Thus, a lighter weight shielding material has become more critical to meet the performance requirements of the vehicle. This report covers the properties of metal clad aramid fibers (MCAF), metal clad polybenzobisoxazole (PBO) fibers (MCPF), and metal clad liquid crystal polymer (LCP) fibers (MCLF), with test results when these products are used…
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