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In-vehicle diagnostic system for prognostics and OTA updates of automated / autonomous vehicles.

Softing Automotive Electronics GmbH-Peter Subke, Muzafar Moshref, Julian Erber
  • Technical Paper
  • 2020-01-1373
To be published on 2020-04-14 by SAE International in United States
The E/E architecture of a modern passenger car consist of a central connectivity gateway that comes with an interface to the legally required OBD connector (SAE J1978), to domain controllers and to a Telematic Control Unit (TCU). The TCU supports 4G or 5G and provides the wireless connection to the cloud. The domain controllers are connected to the gateway via 2-wire Ethernet with a star topology, whereby the domain controllers act as gateways to CAN FD bus systems. The interface to the wired OBD connector supports both OBD/UDS on CAN and UDS on IP. The new E/E system comes with increased self-diagnostic capabilities. They automatically perform tests, log diagnostic data and push such data for prognostics purposes to the cloud. They also support over-the-air (OTA) updates. This paper describes the components of an E/E system that is equipped with an in-vehicle diagnostic tester. The tester consists of standardized components, including MVCI D-Server (ISO 22900), ODX (ISO 22901), OTX (ISO 13209) and UDS on IP (ISO 14229-5). The paper includes a description of cybersecurity measures to…
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Bicycle Braking Performance Testing and Analysis

Momentum Engineering Corp.-Nicholas Famiglietti, Benjamin Nguyen, Edward Fatzinger, Jon Landerville
  • Technical Paper
  • 2020-01-0876
To be published on 2020-04-14 by SAE International in United States
The goal of this study was to determine the braking capabilities of different bicycle types, with different brake setups and applications. A variety of bicycles, including a mountain bike, beach cruiser, BMX bike, road bike, and commuter bike were used to perform brake-to-stop tests. Prior to brake testing, the bicycles were fully inspected, prepped, and documented. Details of the bicycles’ make, model, tires, wheels, brake setup, suspension setup, and preexisting damage were photographed and recorded. The standardized brake testing procedure consisted of rear only brake application and both front and rear brake application. In order to maintain brake application consistency, a single rider performed all series of the skid/brake tests at the same location, on dry asphalt. The tests were performed at an initial velocity of 9 – 20 mph. For each test, the rider accelerated to the test speed and applied maximum braking effort while maintaining a natural upright position to reduce lean. The tests were performed on a painted grid for visibility purposed in measuring skid lengths and post-test video analysis. The bicycle…
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Predictive Break-In and Rapid Efficiency Characterization of Beam Axles

FCA US LLC-Timothy Schumaier, Siqin Wei, Jasbir Singh
FEV North America, Inc.-Patrick R. Bias, Thomas D'Anna
  • Technical Paper
  • 2020-01-1413
To be published on 2020-04-14 by SAE International in United States
Given continued industry focus on reducing parasitic losses, the ability to accurately measure the magnitude of losses on all driveline components is required. A standardized test procedure enables manufacturers and suppliers to measure component losses consistently, in addition to offering a reliable process to assess enablers for efficiency improvements. This paper reviews the development of SAE draft standard J3218, which is a comprehensive test procedure to break-in and characterize the efficiency of beam axles. Focus areas of the study included ensuring the axle’s efficiency does not change as it is being characterized, building a detailed map of efficiency at a wide range of operating points, and minimizing test time. The resulting break-in procedure uses an asymptotic regression approach to predict fully broken in efficiency of the axle and determine how much the efficiency of the axle changes during the characterization phase. This paper outlines several temperature control methods and approaches to efficiency characterization. The paper goes on to define the proposed break-in and efficiency characterization procedures including results from characterization of several production axles.
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Security Analysis of Android Automotive

Georgia Institute of Technology-Josiah Bruner
Harman International-Amy Chu
  • Technical Paper
  • 2020-01-1295
To be published on 2020-04-14 by SAE International in United States
In-vehicle infotainment (IVI) platforms are getting increasingly connected. Besides OEM apps and services, the next generation of IVI platforms are expected to offer third-party application integration. Under this business model, vehicular sensor and event data can be collected and shared with selected third-party apps. To this end, Google is pushing towards standardization among proprietary IVI operating systems with their Android Automotive platform which is running natively on the vehicle’s IVI platform. Unlike Android Auto’s limited functionality of display-mirroring certain smartphone apps to the IVI screen, Android Automotive will have access to the in-vehicle network (IVN) and be able to read and share various sensor data from the car with third-party apps. This increased connectivity opens new business opportunities for both the car manufacturer as well as third-party entities, but also introduces a new attack surface on the vehicle. Therefore, Android Automotive must have a secure system architecture to prevent any potential attacks that might compromise the security and privacy of the vehicle and the driver. In particular, malicious third-party entities could possibly remotely compromise a…
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Safety Considerations for Lasers Projected in the Navigable Airspace

G10T Laser Safety Hazards Committee
  • Aerospace Standard
  • ARP5293A
  • Current
Published 2020-03-10 by SAE International in United States
This document applies to laser proponents involved with the use of laser systems outdoors. It may be used in conjunction with AS4970, ARP5535, and ARP5572 and the ANSI Z136 series of laser safety standards.
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A Study on the Development of Aerostructures Design for Assembly Guidelines and Their Effective Use to Proactively Identify Opportunities for Improvement in Mitigating Common Defects of the Aerostructures Assembly

GITAM School of Technology, Hyderabad-Mani Rathinam Rajamani, Eshwaraiah Punna
  • Technical Paper
  • 2020-01-0009
Published 2020-03-10 by SAE International in United States
An Aircraft’s assembly process plays a vital part in its design, development and production phases and contributes to about half of the Total cost spent in its entire product lifecycle. Design For Assembly (DFA®) principles have been one of the proven effective methodologies in Automotive and Process industries. Use of DFA® principles have resulted in proactively simplifying and optimizing engineering designs with reduced product costs, and improved efficiencies in product design and performance. Standardization of Assembly guidelines is vital for “Design and Build” and “Build-To-Print” manufacturing supplier organizations. However, Standardizing design methodologies, through use of proven tools like Advanced Product Quality Planning, (APQP) are still in the initial stages in Aerospace part and process design processes. Thus, there is a tremendous opportunity for research on the application of the existing DFA® guidelines to optimize Engineering Aerospace Assembly processes aiming to simplify, standardize design methodologies by building on existing industry practices which have a common platform for design communication and are easy to adopt within the existing process/systems. This technical paper is to discuss the framework…
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Metallic Materials Properties Development and Standardization (MMPDS) Handbook - 14

  • Book
  • B-986
Published 2020-03-05 by Battelle Memorial Institute in United States

The Metallic Materials Properties Development and Standardization MMPDS-14supersedes MMPDS-13 and prior editions of the MMPDS Handbook as well as all editions of MIL-HDBK-5, Metallic Materials and Elements for Aerospace Vehicle Structures Handbook that was maintained by the U.S. Air Force. The last edition, MIL-HDBK-5J was cancelled by the U.S. Air Force in March 2006.

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Aerospace Standards Index - 2020

  • Index
  • ASIN2020
Published 2020-03-03 by SAE International in United States

This valuable resource lists all Aerospace Standards (AS), Aerospace Recommended Practices (ARP), Aerospace Information Reports (AIR), and Aerospace Resource Documents (ARD) published by SAE. Each listing includes title, subject, document number, key words, new and revised documents, and DODISS-adopted documents.

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SAE STANDARDS NEWS

Automotive Engineering: March 2020

  • Magazine Article
  • 20AUTP03_06
Published 2020-03-01 by SAE International in United States

SAE International and ISO, the International Organization for Standardization, announced in February 2020 the joint publication of a draft of a new Standard to address automotive cybersecurity engineering. The standard, ISO/SAE 21434, is designed to help industry define a structured process to ensure cybersecurity is incorporated into the design of road vehicles, including their components, subsystems, software and connections to external devices and networks.

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Estimated Spectrum Adaptive Postfilter (ESAP)

  • Magazine Article
  • TBMG-35978
Published 2020-02-01 by Tech Briefs Media Group in United States

The Estimated Spectrum Adaptive Postfilter (ESAP) is an adaptive digital image processing tool that enhances standardized digital JPEG imagery, MPEG video, and HDTV at very low bit rates (less than 0.25 BPP). Since these digital technologies can be scaled down to accommodate the low bit rates needed in constrained bandwidth space exploration applications, ESAP can be used to compensate for these low bit rates where applicable.