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Electrical Connectors for Aerospae, Shipboard, Ground Vehicles and Associated Equipment

AE-8C1 Connectors Committee
  • Aerospace Standard
  • ARP1308D
  • Current
Published 2020-01-21 by SAE International in United States
The intent of this ARP is to identify electrical connectors maintained by the AE-8C1 Committee, to provide their general application characteristics, associated configuration options, and recommendations for new design (see 6.1.1), repair, and retrofit purposes (see 6.1). It is acknowledged the connectors listed herein will not completely satisfy all mobility vehicle and equipment requirements, but optimization of the use of these components will facilitate standardization in the form of maximum utilization of a minimum variety of connectors. This ARP only pertains to AS connector standards. See MIL-STD-1353 for U.S. military specification connector information.
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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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Independent Aftermarket (IAM) and the Three Dimensions of Friction Material Evaluation

LINK South America-Pedro Oliveira, Henrique Rodrigues, Eduardo Ferro
  • Technical Paper
  • 2019-36-0006
Published 2020-01-13 by SAE International in United States
It is well known the difference between development levels and engineering investment applied to passenger car brake pads when compared to Original Equipment Manufacturer (OEM) and items sold in the Independent Aftermarket (IAM). Based on these differences, the objective of this paper is to propose a simple evaluation for the IAM that can provide at least some level of the understanding of frictional material behavior. Based on a tripod of variables, or three Dimensions Development, described in this work as Performance, Comfort (NVH) and Durability; and using internationally and established testing procedures to measure these dimensions in order to meet the IAM demands for the cost-benefit engineering investment. An important part of the proposed tool is to position friction material against competition for market known issues, and, more importantly, to ensure end product safety and reliability.
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Finned surfaces in air-cooled internal combustion engine: influence of geometry and flow conditions

Federal Institute of Espírito Santo - IFES-Gomes C. L., Arruda C. A. M., Sian J. G. A, Schaeffer L. C., Favalessa L. B., Monhol F. A. F.
  • Technical Paper
  • 2019-36-0160
Published 2020-01-13 by SAE International in United States
The internal combustion engine cooling is very important to its proper functioning, since high temperatures can shorten the durability of internal components and hence increase fuel consumption. In air-cooled engines it is common to use extended surfaces (fins), which provide an increase in the convective and radiative heat exchange. Thus, the present work investigates the phenomenon of convection between the external air and the motor casing through computational simulations. The finite differences method was applied for two fin geometry (annular and rectangular). The temperature distribution and the heat transfer rate in the fin were obtained for different ambient temperatures (20 - 40 °C) and flow rates (0 - 25 m/s). The analysis was based on a typical 150-cylinder motorcycle engine with fins made of 204-aluminum alloy. It was observed that under zero flow conditions and ambient temperature of 30 °C there was a temperature gradient of 38.49 °C on the annular fins and only 7.76 °C on the rectangular ones. For forced convection conditions (at 25 m / s) the gradient on the annular fins…
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Customer Profile Identification and correlation between the customer damage and durability tests

FCA Fiat Chrysler Automóveis Brasil LTDA-Fabricio Passos, Filipe Maduro, Irving Coura, Matheus Braga
  • Technical Paper
  • 2019-36-0189
Published 2020-01-13 by SAE International in United States
Vehicle durability is related to its long-term performance. In order to assess the vehicle, subsystems and components expected life, those are subjected to extreme conditions to identify possible issues, detecting its causes and consequences, in order to reach a desired standard of excellence in the future.In the context, durability tests have been facing new challenges: Not only Vehicle development cycles have been reduced, but also there is a strong demand for weight reduction. Therefore, increasing the assertiveness of test parameters is a key factor in achieving these two demands.The present study aims to develop a method that allows the correlation between the durability tests and the customer use profile. Thus, it will be possible to determine a durability target aligned to the actual damage load which the vehicles are subjected, setting the test severity level to represent the customer demand.
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CASE STUDY: RELATION BETWEEN LOADS AND ENGINE MOUNTS STIFFNESS VARIATION APPLIED ON MID SIZE TRUCK

General Motors Mercosul-Marcos Rogério Sanches Barbetti, Fernando Braga, Luiz Carlos Sá, Rafael Tedim Terra
  • Technical Paper
  • 2019-36-0094
Published 2020-01-13 by SAE International in United States
This Paper has as objective to present a study about how the stiffness variation can affect the powertrain mounts system loading. The initial driver for this research is to find enablers to improve the durability performance through loads reduction without noise and vibration degradation.In this study, we will review a summary about powertrain mounts main characteristics to help the understanding how to establish the static and dynamic characteristics, with the external excitations originated from durability track as well the engine torque applied over the system.We used the mid-size truck as physical hardware and the required load data were collected through load cells installed on the powertrain mount system.The load data were analyzed individually per mount and split over the three axles (X, Y and Z). As control factor, we applied different stiffness or “tunings” on the mount rubber body and as result, we established the relation between stiffness and powertrain mounts system loading.The presented graphic results show the load behavior along the durability tracks, it is possible to understand and establish the relation between loads…
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CRIMPING TOOLS, TERMINAL, HAND OR POWER ACTUATED, WIRE TERMINATION, ACCESSORY HARDWARE FOR AS22520/28 AND AS22520/29 TOOLS

AE-8C2 Terminating Devices and Tooling Committee
  • Aerospace Standard
  • AS22520/30
  • Current
Published 2019-12-27 by SAE International in United States
No Abstract Available.
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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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Innovations in Orthopedic Elastomers Enhance Durability and Appearance

  • Magazine Article
  • TBMG-35625
Published 2019-12-01 by Tech Briefs Media Group in United States

The history of silicone rubber is synonymous with advancements in medical materials. Silicones, a family of biocompatible elastomers, provide an attractive balance of properties. For example, silicones offer thermal stability over a wide temperature range. They also provide electrical insulation and are resistant to ozone, water, ultraviolet (UV) light, and some chemicals. For medical applications, silicone rubber can also meet requirements from the U.S. Food and Drug Administration (FDA) and the U.S. Pharmacopeia (USP).

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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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