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Guidelines for Using Plastic Encapsulated Microcircuits and Semiconductors in Military, Aerospace, and Other Rugged Applications

CE-12 Solid State Devices
  • Aerospace Standard
  • SSB1D
  • Current
Published 2020-01-14 by SAE International in United States

This Engineering Bulletin and its annexes provide guidance to Original Equipment Manufacturers (OEMs) in evaluating device manufacturer flows and in selecting cost effective, standard products that meet the performance objective for potential use in many rugged, military, space, extreme, or other environments.

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PLASTICS INNOVATIONS 2019

SAE Truck & Off-Highway Engineering: December 2019

Lindsay Brooke
  • Magazine Article
  • 19TOFHP12_05
Published 2019-12-01 by SAE International in United States

The 49th annual SPE Automotive Awards highlight the ongoing benefits of lightweight polymers and composites.

The Society of Plastics Engineers (SPE) annual Automotive Innovation Awards Competition, now in its 49th year, is considered the “Oscars” for those developing polymer and composites-intensive components, systems and vehicles. Winners of the 2019 competition topped an incredible field of entries that continue to show the benefits of lightweight, durable plastics across the spectrum of vehicle applications.

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Next Generation Power Distribution Unit in Wiring Harness

Mahindra & Mahindra, Ltd.-Boobala Krishnan D, Himanshi Dua, T Vijayan, Apurbo Kirty
  • Technical Paper
  • 2019-28-2571
Published 2019-11-21 by SAE International in United States
With the exponential advancement in technological features of automobile’s EE architecture, designing of power distribution unit becomes complex and challenging. Due to the increase in the number of features, the overall weight of power distribution unit increases and thereby affecting the overall system cost and fuel economy. The scope of this document is to scale down the weight and space of the power distribution unit without compromising with the current performance.The concept of next generation power distribution unit in automobiles is achieved using miniaturization of its sub-components which involves replacing the mini fuses and JCASE fuses with LP mini and LP JCASE fuses respectively. The transition doesn’t involve any tooling modification and hence saves the tooling cost. Furthermore, to address stringent weight and space targets, LP mini fuses and LP JCASE fuses were further replaced with micro-2 fuse and M-case fuse respectively. Similarly, Micro relay and Mini relay were replaced with Ultra micro and high current micro relay respectively.We took MPV segment vehicle for our initial testing and validation and it has been observed to…
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Characterization and Durability of Mold-In-Color Engineering Plastics

Mahindra & Mahindra, Ltd.-Sandeep Kumar Shukla
  • Technical Paper
  • 2019-28-2542
Published 2019-11-21 by SAE International in United States
Plastics are prone to photo oxidative and thermal oxidative degradation under usage conditions due to their chemical nature. From sustainability and cost standpoint, there is an increasing focus on Mold-In-Color (MIC) plastic materials. Simultaneously customer’s expectations on the perceived quality of these MIC parts has been increasing with attractive color and glossy appearance.A study was conducted to analyze the product quality and durability aspects over a prolonged exposure to accelerated weathering condition. Material selected for this study were injection molded specimens of ABS and PC-ABS used in automotive passenger vehicles.Comparative analysis was conducted before and after weathering exposure at defined intervals by using Fourier Transform infra-red spectrometer (FTIR), differential scanning colorimetry (DSC), universal testing machine (UTM), Izod impact tester and microscope to understand the impact on their chemical and mechanical properties.
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End-of-Life Vehicles in India-Regulatory Perspectives

International Centre for Automotive Technology-Vijayanta Ahuja, Shakti N Khanna
  • Technical Paper
  • 2019-28-2580
Published 2019-11-21 by SAE International in United States
This paper discusses the areas affected during and beyond the recycling of the End-of-Life Vehicle (ELV). While the scrap of the vehicle shall be crushed and re-utilised from scrap metal (ferrous and non-ferrous), this paper also discusses potential usage of the components for remanufacturing by the respective OEMs. It further discusses how non-metallic parts such as plastics may be recycled. A complete framework committed to such a comprehensive approach shall not only reduce the impact on the environment but will also provide a more affordable and responsible alternative to the industry. While doing that, the economic and environmental impact on the industry and the un-organised sector has to be considered whilst also ensuring that a model with shared responsibility is established to dispose/ recycle any such ELV responsibly. The paper in its true spirit aims at effectively implementing the 3 Rs - Reduce, Reuse and Recycle - Reduction of waste and virgin natural elements, Reuse of working and efficient spares for remanufacturing purposes and Recycling of the scrap material. Older vehicles, conforming to lenient emission…
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Simulation of Softening and Rupture in Multilayered Fuel Tank Material

General Motors Technical Center India-Vijaya Kumar R L, Biswajit Tripathy, Jayaraj Radhakrishnan
  • Technical Paper
  • 2019-28-2557
Published 2019-11-21 by SAE International in United States
Multi-layered, high-density polyethylene (HDPE) fuel tanks are increasingly being used in automobiles due to advantages such as shape flexibility, low weight and corrosion resistance. Though, HDPE fuel tanks are perceived to be safer as compared to metallic tanks, the material properties are influenced by service temperature. At higher temperatures (more than 80oC), plastic fuel tanks can soften, sag and eventually spill out the fuel, while the extreme cold (less than -20°C) can lead to potential cracking problems. Damage may also occur due to accidental drop while handling or due to an impact from a flying shrapnel. This can be catastrophic due to flammability of the fuel. The objective of this work is to characterize and develop a failure model for the plastic fuel tank material to simulate damage and enhance predictive capability of CAE for chassis and safety load cases. Different factors influencing the material properties such as service temperature, rate of deformation, state of stress etc. were considered to develop a characterization and modelling strategy for the HDPE fuel tank material. Samples cut-out from…
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Mathematical Technique Quickly Tunes Next-Generation Lenses

  • Magazine Article
  • TBMG-35480
Published 2019-11-01 by Tech Briefs Media Group in United States

Most of us know optical lenses as curved, transparent pieces of plastic or glass, designed to focus light for microscopes, spectacles, cameras, and more. For the most part, a lens’ curved shape has not changed much since it was invented many centuries ago.

Pearl-Like Coating Enhances Lightweight Armor

  • Magazine Article
  • TBMG-35453
Published 2019-11-01 by Tech Briefs Media Group in United States

By mimicking the outer coating of pearls (nacre or mother of pearl), researchers created a lightweight plastic that is 14 times stronger and eight times lighter (less dense) than steel. It could be applicable to vests, helmets, and other types of body armor as well as protective armor for ships, helicopters, and other vehicles.

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CLAMP, LOOP, PLASTIC, WIRE SUPPORT

AE-8C2 Terminating Devices and Tooling Committee
  • Aerospace Standard
  • AS25281D
  • Current
Published 2019-10-29 by SAE International in United States
No Abstract Available.
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OEM Plastic Parts Repair

Motor Vehicle Council
  • Ground Vehicle Standard
  • J1573_201910
  • Current
Published 2019-10-24 by SAE International in United States
This SAE Recommended Practice defines the information required to repair the various types of plastics found on modern light-duty highway vehicles. Information is included for the repair and refinishing of most plastic body parts, both interior and exterior. Repair information is described for all commonly used plastics including, but not limited to, polyurethanes, polycarbonate blends, modified polypropylenes, polyethylenes and nylons. Repairs can be made to these types of plastics using two-part (2K) repair adhesives, plastic welding, and other materials available from body shop suppliers. When a new type of plastic is being introduced to the market through a new vehicle program, specific repair and refinishing procedures should be provided, following the format in this document. Sheet-molded compounds (SMC), fiber-reinforced plastics (FRP) and carbon fiber reinforced plastics can also be repaired using slightly different procedures and repair materials.
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