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For Power-Efficient Wireless Sensing, Start with Analog Processing

  • Magazine Article
  • TBMG-36150
Published 2020-03-01 by Tech Briefs Media Group in United States

It seems like new applications for wireless sensors are appearing nearly every day. Two of the biggest growth areas are wake-word-driven systems like Alexa or Google and remote vibration monitoring of industrial machinery. Vibration monitoring provides useful information about the machinery, either in real time — condition monitoring; or to predict defects 60 or 90 days in advance — predictive maintenance.

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SOLVING THE “telehandler problem”

SAE Truck & Off-Highway Engineering: February 2020

Maurice Ashmore
  • Magazine Article
  • 20TOFHP02_04
Published 2020-02-01 by SAE International in United States

Two-stage overcenter valves create stability in machines with highly dynamic loads.

A common challenge engineers face in the application of counterbalance or overcenter valves is machines with a high degree of load dynamics. Vehicles with slender booms, multiple booms, wear pads with varying frictional forces or pneumatic tires are all subject to higher levels of load dynamics. Concrete pumps are a common example as they require multiple long, slender booms to deliver concrete to the work site. Rough-terrain forklifts or telescopic handlers with pneumatic tires are other examples.

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A Recommended Method of Analytically Determining the Competence of Hydraulic Telescopic Cantilevered Crane Booms

Cranes and Lifting Devices Committee
  • Ground Vehicle Standard
  • J1078_202001
  • Current
Published 2020-01-15 by SAE International in United States
This analysis applies to crane types as covered by ASME B30.5.
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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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Hydrogen Surface Vehicle to Station Communications Hardware and Software

Fuel Cell Standards Committee
  • Ground Vehicle Standard
  • J2799_201912
  • Current
Published 2019-12-13 by SAE International in United States
This standard specifies the communications hardware and software requirements for fueling hydrogen surface vehicles (HSV), such as fuel cell vehicles, but may also be used where appropriate, with heavy-duty vehicles (e.g., busses) and industrial trucks (e.g., forklifts) with compressed hydrogen storage. It contains a description of the communications hardware and communications protocol that may be used to refuel the HSV. The intent of this standard is to enable harmonized development and implementation of the hydrogen fueling interfaces. This standard is intended to be used in conjunction with the hydrogen fueling protocols in SAE J2601 and nozzles and receptacles conforming with SAE J2600.
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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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Hydraulic Directional Control Valves, 3000 psi Maximum

CTTC C1, Hydraulic Systems
  • Ground Vehicle Standard
  • J748_201912
  • Current
Published 2019-12-04 by SAE International in United States
This SAE Recommended Practice has been set up by Subcommittee 4 of the Off-Road Machinery Technical Committee and is primarily for directional control valves on construction and industrial machinery equipment as referenced in SAE J1116. The purpose is to establish port area to flow relationship and match valve spool eye ends in relation to rated capacity. Port connections are optional for either the 4-bolt split flange connection or the internal straight thread "O" ring connection.
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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.