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Development and analysis of a rotary wall crane design using CAD and CAE Tools

Unesp – Faculdade de Engenharia de Guaratinguetá-Jessé de Jesus Silva, Fernando de Azevedo Silva
  • Technical Paper
  • 2019-36-0220
Published 2020-01-13 by SAE International in United States
Cranes and rigging equipment are important machines in industrial activities, construction, port operations and in many sectors that demand the lifting of high loads in a safe, controlled and efficient way. And the design of these equipment, in turn, requires the use of machine elements, mechanisms, and structures that are widely used in engineering, such as wire ropes, gears, pulleys, bolted connections, structural profiles, etc. In this work, a rotary wall crane was built in a virtual environment. The design was based mainly on the ABNT NBR 8400 standard. The software used for 3D modeling was Autodesk Inventor® and the main structure of the equipment was analyzed, according to its functionality, using numerical simulations based on the finite element method. Firstly, the structure of the crane, consisting of L and U structural profiles, bolted joints, structural reinforcements and other connections, was analyzed separately. Static structural simulations were conducted in this subassembly. Concomitantly, structural calculations were performed using statics and vector mechanics methods and by the finite element analysis. In this case, the Direct Stiffness Method…
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Advanced Model Experiment for the Research of Journal Bearings with Cavitation

University of Applied Sciences and Arts Hildesheim/Holzminde-Peter Reinke, Marcus Schmidt, Tom Beckmann
  • Technical Paper
  • 2019-01-2331
Published 2019-12-19 by SAE International in United States
The prediction of cavitation in journal bearings is one of the current challenges in the field of fluid dynamics. Hydrodynamic journal bearings are used in a wide range of industrial applications because they provide low friction and minimal wear. Suction cavitation is one potential cause of bearing failures. The work on hand presents a new experimental approach to study suction cavitation in a scaled bearing model. Moreover, mechanical and fluid dynamic similarity laws are described which enable the transfer of bearing operation conditions into the laboratory experiment.
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Flashing Warning Lamp for Industrial Equipment

OPTC3, Lighting and Sound Committee
  • Ground Vehicle Standard
  • J96_201912
  • Current
Published 2019-12-09 by SAE International in United States

This SAE Standard covers the general requirements and the test requirements for a flashing warning lamp for industrial wheeled equipment.

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Industrial and Agricultural Disc Wheels

MTC8, Tire and Rim
  • Ground Vehicle Standard
  • J712_201909
  • Current
Published 2019-09-25 by SAE International in United States
The purpose of this SAE Recommended Practice is to provide a selection of disc wheels for industrial and agricultural application with a maximum of interchangeability. This is accomplished by establishing five groups of disc wheels, in each of which the hub mounting elements are common. These groups are designated 4 bolt, 5 in bolt circle; 5 bolt, 4.5 in bolt circle; 5 bolt, 5.5 in bolt circle; 6 bolt, 6 in bolt circle; and 8 bolt, 8 in bolt circle. Further, this document establishes an SAE part number and the maximum rated radial load for each standard wheel. In addition, the document requires the wheel manufacturer's name or trademark to be impression stamped on the wheel with location at the discretion of the manufacturer.
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How to Choose the Right Wireless Technology for Industrial Condition Monitoring

  • Magazine Article
  • TBMG-35194
Published 2019-09-01 by Tech Briefs Media Group in United States

Industries are constantly searching for new approaches to advance operational efficiency and product quality. With unplanned downtime estimated to cost manufacturers $50 billion each year, improving asset health and availability is a top priority.

The Many Uses of Inductive Position Sensors in the IIoT

  • Magazine Article
  • TBMG-35198
Published 2019-09-01 by Tech Briefs Media Group in United States

The IIoT is all about communication of information concerning the status of devices and being able to control them remotely. This imposes a whole new set of requirements on sensors. They have to be designed to be able to interface well with electronics and computers, with all of the complications of that, such as EMC — sensitivity to, and generation of, noise and interference. This can only be achieved with intelligent sensors. We interviewed K. Mark Smith, Ph.D., Senior Product Manager, Sensors, Microchip Technology, (Chandler, AZ) about the role of inductive position sensors in the IIoT.

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Steering for Off-Road, Rubber-Tired Machines

OPTC1, Personnel Protection (General)
  • Ground Vehicle Standard
  • J1511_201907
  • Current
Published 2019-07-29 by SAE International in United States

This SAE Standard applies to off-road rubber-tired machines having rated speed capability exceeding 20 km/h.

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Evaluation of Navigation in Mobile Robots for Long-Term Autonomy in Automotive Manufacturing Environments

Clemson University - ICAR-Jasprit Singh Gill, Mark Tomaszewski, Yunyi Jia, Pierluigi Pisu, Venkat N Krovi
Published 2019-04-02 by SAE International in United States
In recent times, a number of reference implementations of Simultaneous Localization and Mapping (SLAM) and navigation techniques have been made publicly available via the ROS Community. Several implementations have transitioned to commercial products (vacuum robots, drones, warehouse robots, etc.). However, in such cases, they are specialized and optimized for their specific domains of deployment. In particular, their success criteria have been based primarily on mission completion and safety of humans around them. In this light, deployment in any new operational design domain (ODD) requires at least a careful verification of performance and often re-optimization. We seek the technological gaps that need to be addressed to ensure the mobile robots are fit for automotive manufacturing environments. Automotive final assembly environments pose significant additional challenges for mobile robot deployment. They are replete with relatively unstructured tasks with significant uncertainty, involve tasks with skills that require robots to work in collaboration with humans and are time sensitive. Currently, metrics for evaluating mobile robot functionalities have been based on accuracy, functionality and resource consumption. In addition to these, automotive…
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Driverless Forklifts

  • Magazine Article
  • TBMG-33887
Published 2019-03-01 by Tech Briefs Media Group in United States

Although driverless forklifts have been around for about 30 years, it's only in the last 10 or so that they've been free to maneuver anywhere around their environment. In the early days, the machines followed a current in a wire buried in a concrete floor. There have since been a handful of different approaches, but all are variants on that theme. They went from wires in the floor to paint on the floor, to tape on the floor, to magnets in the floor, to reflectors on the walls, to QR codes on the ground, but they were all just different types of landmarks. So, the vehicles were confined to a fixed path — quite predictable, but extremely inflexible.

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Clip Fastener Fitting

Hydraulic Hose and Hose Fittings Committee
  • Ground Vehicle Standard
  • J1467_201808
  • Current
Published 2018-08-24 by SAE International in United States
This SAE Standard covers material and dimensional requirements of steel clip fastener fittings. These fittings are intended for use in hydraulic systems on industrial equipment primarily in mining applications.
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