Your Selections

Containers
Show Only

Collections

File Formats

Content Types

Dates

Sectors

Topics

Authors

Publishers

Affiliations

Committees

Events

   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

A Novel Asynchronous UWB Positioning System for Autonomous Trucks in An Automated Container Terminal

Tongji University-Mingyang Wang, Aiguo Zhou, Xinbo Chen, Yong Shen, Zhenyu Li
  • Technical Paper
  • 2020-01-1026
To be published on 2020-04-14 by SAE International in United States
As a key technology to autonomous vehicles, high precise positioning is essential for automated container terminals to implement intelligent dispatching and to improve container transport efficiency. In view of the unstable performance of global positioning system (GPS) in some circumstances, an ultra wide band (UWB) positioning system is developed for autonomous trucks in an automated container terminal. In this paper, an asynchronous structure is adopted in the system and a three-dimension (3D) localization method is proposed. Other than a traditional UWB positioning system with a server, in this asynchronous system, positions are calculated in vehicle. Therefore, propagation delays from the server to vehicles are eliminated and real-time performance of the system can be significantly improved. Traditional 3D localization methods based on TDOA are mostly invalid with anchors in the same plane. However, in order to guarantee anchors and tags in line of sight (LOS), anchors have to be installed in a vertical plane under the tyre cranes. Coping with this problem, an improved method is presented, which overcomes the matrix singularity. Three hyperboloids can be…
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.
new

Fluid, Jet Reference

AMS G9 Aerospace Sealing Committee
  • Aerospace Material Specification
  • AMS2629F
  • Current
Published 2020-03-12 by SAE International in United States
This specification covers a mixture of liquid hydrocarbons and soluble additives.
This content contains downloadable datasets
Annotation ability available
new

Slippery Surfaces Allow Sticky Pastes and Gels to Slide

  • Magazine Article
  • TBMG-36192
Published 2020-03-01 by Tech Briefs Media Group in United States

Materials known as yield-stress fluids, including gels and pastes, can be found in consumer products such as food, condiments, and cosmetics, and in products in the energy and pharmaceuticals industries. Unlike other fluids such as water and oils, these materials will not start to flow on their own, even when their container is turned upside-down. Starting the flow requires an input of energy, such as squeezing the container.

   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Interior Decorative Clear Coating for Metal Surfaces

AMS G8 Aerospace Organic Coatings Committee
  • Aerospace Material Specification
  • AMS7200
  • Current
Published 2020-02-10 by SAE International in United States
This specification establishes requirements for an interior decorative clear coating for wear protection of metal substrates.
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Magnetic Particles, Fluorescent Wet Method, Oil Vehicle, Aerosol Packaged

AMS K Non Destructive Methods and Processes Committee
  • Aerospace Material Specification
  • AMS3046H
  • Current
Published 2020-01-03 by SAE International in United States
This specification covers one type of fluorescent magnetic particles in the form of a mixed, ready-to-use suspension in an odorless, inspection oil vehicle and packaged in aerosol cans.
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Gas Metal Arc Welding Process Parameter Optimization to Reduce Porosity Defect in a Longitudinal Seam Welding of Pressure Vessels

SAE International Journal of Materials and Manufacturing

Amrita Vishwa Vidyapeetham, India-A. Kuppusamy, K. Rameshkumar, A. Sumesh
ELGI Equipment Limited, India-S. Premkumar
  • Journal Article
  • 05-13-01-0005
Published 2019-12-02 by SAE International in United States
Pressure vessels are critical equipment used in industries for storing liquids or gases at a pressure significantly different from ambient conditions. Porosity is one of the major weld defects in pressure vessels that leads to failure during inspection and as well as during its service. Gas Metal Arc Welding (GMAW) process is widely used in industries to fabricate pressure vessels using carbon steel “IS 2062 E250BR” material for storing compressed air. The main objective of this article is to reduce the porosity defect in the longitudinal seam (LS) welding of the pressure vessels. Detailed analysis is carried out to identify the parameters which are influencing the porosity defect. Central Composite Design (CCD) and Response Surface Methodology (RSM) approaches are used to find the optimum value of the weld parameters which produce weld without porosity or any major defects in the pressure vessel. An experimental setup has been established and welding experiments have been conducted under a controlled environment. Experiments were conducted without any external disturbances ensuring clean weld surface and filler wire without any moisture,…
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Aluminum Alloy, Bar, Rod, Shapes, Structural Shapes, Tube, and Wire, Extruded: General Specification for

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMSQQA200C
  • Current
Published 2019-11-19 by SAE International in United States
This specification covers the general requirements for aluminum alloy bar, rod, shapes, structural shapes, tube, and wire extruded. Specific requirements for these products in a particular alloy are covered by the applicable detailed specification (See 6.3).
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Precipitation Hardenable Steel Alloy, Corrosion and Heat-Resistant Powder for Additive Manufacturing 16.0Cr - 4.0Ni - 4.0Cu - 0.30Nb

AMS AM Additive Manufacturing Metals
  • Aerospace Material Specification
  • AMS7012
  • Current
Published 2019-11-14 by SAE International in United States
This specification covers a corrosion and heat-resistant steel alloy in the form of pre-alloyed powder.
This content contains downloadable datasets
Annotation ability available

Passive Smart Container

  • Magazine Article
  • TBMG-35464
Published 2019-11-01 by Tech Briefs Media Group in United States

Although Radio Frequency Identification (RFID) technology is being used widely for pallet and box-level tracking in the commercial sector, significant technology gaps remain for tracking dense quantities at the item level. NASA’s Johnson Space Center has developed a Passive Smart Container to monitor and track items that are too small to tag individually.

   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Paint System, Fluorescent, Removable, for Aircraft Application

AMS G8 Aerospace Organic Coatings Committee
  • Aerospace Material Specification
  • AMSP21600B
  • Current
Published 2019-10-28 by SAE International in United States
This specification establishes the requirements for a high visibility, durable, exterior fluorescent coating system consisting of a pigmented fluorescent coating with a clear protective overcoat containing a weathering stabilizer. This coating system is capable of being removed without softening the permanent undercoats.
This content contains downloadable datasets
Annotation ability available