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DFD Stratagem Investigation on Suspension Subframe Durability Test with Spindle Coupled Road Test Simulator

F.tech R&D North America Inc.-Jianghua Gao, Matt Guo, Xin Zhang, Xiao Yu
  • Technical Paper
  • 2020-01-0992
To be published on 2020-04-14 by SAE International in United States
In order to replicate the vehicle chassis proving ground (PG) durability test on the laboratory half vehicle spindle coupled Road Test Simulator (RTS), a drive file which can excite the actuators of the RTS to duplicate the chassis component stress state need to be developed. Traditionally the Drive File Development (DFD) aims to match the spindle forces and moments in addition with some supplement channels such as the tierod axial forces and the spring travels. However the suspension subframe which was connected to the vehicle body may particularly experience a different stress state on the RTS due to the boundary condition discrepancy between the vehicle PG test and the laboratory RTS test. In this paper, the investigation of the different boundary conditions impact on the chassis structures’ stress state is conducted both physically and virtually. It’s proved that the subframe stress state has a non-negligible difference from full vehicle PG test to the half vehicle spindle coupled RTS test using the conventional DFD stratagem. Thus, a special DFD stratagem which employees the subframe strain road…
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Steering behavior of an Articulated Amphibious All-Terrain Tracked Vehicle

ARIS SpA-Emanuele Rota, Andrea Novara
Politecnico di Torino-Antonio Tota, Mauro Velardocchia
  • Technical Paper
  • 2020-01-0996
To be published on 2020-04-14 by SAE International in United States
This paper presents a study related to an Articulated Amphibious All-Terrain Tracked Vehicle (ATV) characterized by a modular architecture. In this case, an ATV with two modules is considered: the first one hosts mainly the vehicle engine and powertrain, meanwhile the second one can be used for goods transportation, personnel carrier, crane and so on. The engine torque is transmitted to the front axle sprocket wheel of each module and finally distributed on the ground through a track mechanism. The two modules are connected through a specific multiaxial joint able to guarantee four relative degrees of freedom between them. One of ATV main characteristics is an Electro Hydraulic Power System (EHPS) to steer the vehicle up to a minimum curvature radius of 6.5 m, thus letting the vehicle steerable on any kind of terrain without a differential tracks speed. The paper aims to analyze the kinematic and dynamic behaviour of the ATV on a flat road, through a simplified vehicle model built in Matlab/Simulink environment. The model describes the vehicle main planar motion and the…
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Democratize AV Technology!

Autonomous Vehicle Engineering: January 2020

Lindsay Brooke
  • Magazine Article
  • 20AVEP01_04
Published 2020-01-01 by SAE International in United States

Aptiv's new generation of open-sourced architectures based on a few central processors aims to speed AV adoption. CTO Glen DeVos explains.

The software-intensive, electrified and increasingly automated vehicle will define the 2020s. Its rise is driving both the industry-wide re-thinking of electrical architectures and the growth of engineering employment behind it. At the forefront of this trend is Aptiv, the technology Tier 1 spun off from Delphi in 2017. It now has more than 19,000 engineers among its 160,000 staff, comprising one of the highest engineer-to-employee ratios among large suppliers.

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Corrosion Test Master Establishment

Wheel Standards Committee
  • Ground Vehicle Standard
  • J2636_201910
  • Current
Published 2019-10-21 by SAE International in United States
This SAE lab recommended practice may be applied to corrosion test methods such as salt spray, filiform, Corrosion creep back, etc. This procedure is intended to permit corrosion testing to be assessed between Laboratories for correlation purposes.
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Transformational Technologies Reshaping Transportation - An Academia Perspective

Ohio State University-Giorgio Rizzoni, Qadeer Ahmed, Mukilan Arasu, Pradeep Sharma Oruganti
Published 2019-10-14 by SAE International in United States
This paper and the associated lecture present an overview of technology trends and of market and business opportunities created by technology, as well as of the challenges posed by environmental and economic considerations. Commercial vehicles are one of the engines of our economy. Moving goods and people efficiently and economically is a key to continued industrial development and to strong employment. Trucks are responsible for nearly 70% of the movement of goods in the USA (by value) and represent approximately 300 billion of the 3.21 trillion annual vehicle miles travelled by all vehicles in the USA while public transit enables mobility and access to jobs for millions of people, with over 10 billion trips annually in the USA creating and sustaining employment opportunities.Commercial vehicles provide access to work and leisure time for millions of people every day and deliver and distribute the goods that make our economy move, from raw materials, to components, to finish products, as well as providing a multitude of services and support functions. While on-road trucks and buses represent only part…
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The Road to the Top is Not on the Map: Conversations with Top Women of the Automotive Industry

Terry Barclay
Center For Automotive Research-Carla Bailo
  • Book
  • R-491
Published 2019-09-04 by SAE International in United States

Carla Bailo, CEO of the Center for Automotive Research, and Terry Barclay, CEO of Inforum, bring together over 30 of the most influential women in the automotive industry to share their insight and advice. From suppliers to OEMs, they hail from every corner of the industry.

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Feasibility Study of Portable Water Desalination Systems for Water Contingencies at Remote Navy Installations

Aerospace & Defense Technology: August 2019

  • Magazine Article
  • 19AERP08_07
Published 2019-08-01 by SAE International in United States

Navy explores ways to ensure an uninterrupted supply of potable water at remote installations.

The Department of the Navy (DON) has major installations located around the world. Twenty-two main installations operate outside the continental United States (OCONUS) and rely on on-base water processing facilities. These facilities serve a total population of 71,000 military and civilian personnel, and the water plants have a total production capacity of 15.7 million gallons per day.

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Training and Approval of Heat-Treating Personnel

AMS B Finishes Processes and Fluids Committee
  • Aerospace Standard
  • ARP1962B
  • Current
Published 2019-06-11 by SAE International in United States
This SAE Aerospace Recommended Practice (ARP) describes training and approval of personnel performing certain heat-treating and associated operations that could have a material impact on the properties of materials being heat treated. It also recommends that only approved personnel perform or monitor the functions listed in Table 1.
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Aerospace Work Platforms - More than Meets the Eye

Aerospace & Defense Technology: June 2019

  • Magazine Article
  • 19AERP06_13
Published 2019-06-01 by SAE International in United States

Today's work platforms are far more complex than the simple designs of the past.

For maintenance personnel in the aerospace industry to do their jobs effectively, they need to be able to get physically close to the equipment they are working on. This statement sounds obvious, but in order to meet this requirement, it is very important to utilize quality work platforms. Although most people are familiar with the basic uses of work platforms, there is not always much thought given to everything that goes into their design and fabrication.

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Reconstruction of 3D Accident Sites Using USGS LiDAR, Aerial Images, and Photogrammetry

Kineticorp LLC-Toby Terpstra, Jordan Dickinson, Alireza Hashemian, Stephen Fenton
Published 2019-04-02 by SAE International in United States
The accident reconstruction community has previously relied upon photographs and site visits to recreate a scene. This method is difficult in instances where the site has changed or is not accessible. In 2017 the United States Geological Survey (USGS) released historical 3D point clouds (LiDAR) allowing for access to digital 3D data without visiting the site. This offers many unique benefits to the reconstruction community including: safety, budget, time, and historical preservation. This paper presents a methodology for collecting this data and using it in conjunction with aerial imagery, and camera matching photogrammetry to create 3D computer models of the scene without a site visit. To determine accuracies achievable using this method, evidence locations solved for using only USGS LiDAR, aerial images and scene photographs (representative of emergency personnel photographs) were compared with known locations documented using total station survey equipment and ground-based 3D laser scanning. The data collected from three different site locations was analyzed, and camera matching photogrammetry was performed independently by 5 different individuals to locate evidence. On average, the resulting evidence…
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