Development Testing of Epicyclic Gearing

1991 ◽  
Author(s):  
D. E. Yates ◽  
G. J. Lack
Keyword(s):  
Vibration Isolation ◽  
Industrial Applications ◽  
Low Noise ◽  
Test Rig ◽  
Innovative Design ◽  
Design Concepts ◽  
Low Weight ◽  
Design And Manufacturing ◽  
Manufacturing Methods ◽  
Dynamic Load Sharing

The increasing use of epicyclics for high powered marine and industrial applications has resulted in world wide interest in this type of gearing. The coaxial input and output, reduced losses, small size and low weight are some of the advantages. The use of a full size development test rig using the power circulation method has been fundamental to the evolution of double helical, flexible annulus epicyclics, and has led to a detailed understanding of their operating principles. This understanding has been essential for the analytical modelling and the development of innovative design concepts. The paper outlines some of the work which has been carried out in the test rig at NEI Allen Ltd - Allen Gears. The method of measuring the dynamic load sharing is discussed and some of the results which have led to improvements in the design and manufacturing methods are given. Test rig work continues currently with the development of low noise gears and vibration isolation.

Development Testing of Epicyclic Gearing

1992 ◽  
Vol 114 (2) ◽  
pp. 328-333 ◽  
Author(s):  
D. E. Yates ◽  
G. J. Lack
Keyword(s):  
Analytical Modeling ◽  
Vibration Isolation ◽  
Industrial Applications ◽  
Low Noise ◽  
Test Rig ◽  
Innovative Design ◽  
Design Concepts ◽  
Low Weight ◽  
Design And Manufacturing ◽  
Dynamic Load Sharing

The increasing use of epicyclics for high-powered marine and industrial applications has resulted in world-wide interest in this type of gearing. The coaxial input and output, reduced losses, small size, and low weight are some of the advantages. The use of a full-size development test rig using the power circulation method has been fundamental to the evolution of double helical, flexible annulus epicyclics, and has led to a detailed understanding of their operating principles. This understanding has been essential for the analytical modeling and the development of innovative design concepts. The paper outlines some of the work that has been carried out in the test rig at NEI Allen Ltd.—Allen Gears. The method of measuring the dynamic load sharing is discussed and some of the results that have led to improvements in the design and manufacturing methods are given. Test rig work continues currently with the development of low-noise gears and vibration isolation.

Educational Model for the Kinematic Study of Non-Circular Gears

2013 ◽  
Vol 332 ◽  
pp. 297-304
Author(s):  
Liviu Ciupitu
Keyword(s):  
Numerical Methods ◽  
Industrial Applications ◽  
Point Of View ◽  
Spur Gears ◽  
Test Rig ◽  
Educational Model ◽  
Educational Test ◽  
Kinematic Study ◽  
Variation Curve ◽  
Noncircular Gears

The noncircular gears are used more and more in industrial applications. The paper presents an educational test rig for the kinematic study of non-circular gears. Two gears are studied from kinematic theoretically point of view: a gear with identically oval spur gears and another gear with identically elliptical spur gears, and simulation diagrams are presented. As for the testing rig, a gear with identically oval spur gears has been used. The researchers are able to draw with high precision the variation curve of output angle with respect to input angle. By using numerical methods for integration and differentiation other diagrams could be drawn and a comparation with simulation diagrams could be made.

Design and Manufacturing of a Multistage Cooled Current Lead for Superconducting High Current DC Busbars in Industrial Applications

2017 ◽  
Vol 27 (4) ◽  
pp. 1-5 ◽  
Author(s):  
Florian Schreiner ◽  
Bernd Gutheil ◽  
Mathias Noe ◽  
Wolfgang Reiser ◽  
Stefan Huwer ◽  
...  
Keyword(s):  
Industrial Applications ◽  
Current Lead ◽  
High Current ◽  
Design And Manufacturing

Knowledge-Based Diagnostics and Design Systems

1991 ◽  
Author(s):  
Sherman S. Wang
Keyword(s):  
Disk Drive ◽  
Industrial Applications ◽  
Survey Study ◽  
New Techniques ◽  
Knowledge Based ◽  
Industrial Companies ◽  
Intelligent Software ◽  
Design And Manufacturing ◽  
Tightly Coupled ◽  
Design Systems

Abstract Substantial literature using knowledge-based system techniques has been accumulated over the past few years in the fields of diagnostics, modeling and design. Many of these techniques have been successfully used by a wide variety of industrial companies. The purpose of this paper is to present a summary of these new techniques, and an examination of their advantages and limitations for industrial applications. These techniques will help to insure the integrity of future concurrent design and manufacturing development. The purpose of our survey study is to show that the design and modeling of product functions and their associated diagnostic processes should be tightly coupled. The design and diagnostic tasks should be supported by integrated and intelligent software. Many examples of knowledge-based systems for disk drive diagnostics and design will also be included.

scholarly journals 3D Digitization and Additive Manufacturing Technologies in Medicine

2018 ◽  
Vol 26 (42) ◽  
pp. 165-170
Author(s):  
Ivan Molnár ◽  
Ladislav Morovič
Keyword(s):  
Additive Manufacturing ◽  
Manufacturing Processes ◽  
Design And Manufacturing ◽  
Medical Aids ◽  
Manufacturing Methods ◽  
Manufacturing Technologies ◽  
Design And Manufacture ◽  
3D Digitization ◽  
The Given

Abstract The paper discusses the use of 3D digitization and additive manufacturing technologies in the field of medicine. In addition, applications of the use of 3D digitization and additive manufacturing methods are described, focusing on the design and manufacture of individual medical aids. Subsequently, the process of designing and manufacturing of orthopedic aids using these technologies is described and the advantages of introducing the given technologies into the design and manufacturing processes in the medicine sector are presented.

scholarly journals Innovative design concepts for the LMF target chamber and related systems

1989 ◽  
Author(s):  
R. Bourgue ◽  
E. Cheng ◽  
R. Creedon ◽  
K. Schultz ◽  
D. Sonn
Keyword(s):  
Target Chamber ◽  
Innovative Design ◽  
Design Concepts

Layered Manufacturing With Embedded Components: Process Planning Considerations

1999 ◽  
Author(s):  
Jorge G. Cham ◽  
Beth L. Pruitt ◽  
Mark R. Cutkosky ◽  
Mike Binnard ◽  
Lee E. Weiss ◽  
...  
Keyword(s):  
Process Planning ◽  
Layered Manufacturing ◽  
Manufacturing Processes ◽  
Smart Products ◽  
Design And Manufacturing ◽  
Manufacturing Methods ◽  
The Creation ◽  
Shape Deposition Manufacturing ◽  
Planning Algorithms ◽  
Mechanical Components

Abstract This paper addresses the design and manufacturing of products with embedded components through layered manufacturing processes such as Shape Deposition Manufacturing (SDM). Embedding components allows the creation of novel designs such as “smart” products and integrated assemblies of sensors, actuators and other mechanical components. We present prototypes to illustrate the possibilities for such devices and we address the issues that constrain their process planning. Next, we present a combination of process planning algorithms and manufacturing methods that we have developed to support the design of layered products with embedded components.

The multi-functional rotor aerodynamic and aeroacoustic test platform at HKUST

2021 ◽  
Vol 263 (2) ◽  
pp. 4410-4417
Author(s):  
Han Wu ◽  
Chuntai Zheng ◽  
Peng Zhou ◽  
Ryu Fattah ◽  
Xin Zhang ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Phase Locking ◽  
Axial Flow ◽  
Low Noise ◽  
Test Rig ◽  
Tunnel Wall ◽  
Noise Characteristics ◽  
Piv Measurement ◽  
Test Platform ◽  
Semi Empirical

This paper describes the multi-functional rotor noise and aerodynamics test platform at the Hong Kong University of Science and Technology (HKUST). To investigate the noise characteristics of propellers with aerodynamic flows, the test rig is installed in the 2.5×2 (m) low-speed and low-noise wind tunnel in the Aerodynamic and Acoustic Facility (AAF) at HKUST. The wind tunnel can facilitate flow from 0 to 40 m/s. The test rig is assembled in a turntable on the ceiling of the tunnel wall, which enables the testing range of pitch angle can vary from 0° (axial flow) to 90° (parallel flow), with an accuracy of 0.1°. The noise produced by the rotor is measured by a set of wall-mounted surface microphones. Semi-empirical calibration is conducted to quantify the noise reflection by the tunnel walls. A low-noise struct has been designed and manufactured to locate a set of far-field microphones equipped with nosecone, to improve the quality of acoustic measurement inside the flow. In addition, a synchronized system is developed to conduct the phase-locking Particle Image Velocimetry (PIV) measurement on the rotor, to study the flow pattern to better understand the noise generation mechanism.

Successful Moveable Bridges

2019 ◽  
Author(s):  
Kjeld Thomsen ◽  
Christian Riis Petersen
Keyword(s):  
Operation Time ◽  
Cost Effective ◽  
Modern Technology ◽  
Point Of View ◽  
Maintenance Cost ◽  
Hydraulic Systems ◽  
Design Concepts ◽  
Electrical Systems ◽  
Low Weight ◽  
Selection Of

<p>The present paper describes developments in the design of the most common types of movable bridges – Bascule bridges and Swing Bridges. The selection of design concepts is influenced by span, foundation conditions as well as environmental issues. Application of modern hydraulic systems and innovative bearing types for swing bridges facilitate the creation of outstanding designs. Recently built moveable bridges in Denmark exemplifies the trend and how application of modern technology and creativity can lead to outstanding solutions. There are many governing parameters such as the span, free opening height and loading conditions. Equally important issues such as surroundings, landscape, foundation conditions, requirement to low weight, achievable tolerances and from a mechanical point of view, the operation time. Risk assessment, mechanical- and electrical systems and the requirement to operation time and maintenance cost, will have influence on the selection of machinery and the architectural and structural design. For each of the moveable bridges described, it is shown how innovative application of modern bearing concepts and hydraulic systems can lead to elegant and cost-effective solutions.</p>

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