An Automated Quasi-Static Test Bench for a Detailed Torque Characterization of PM Synchronous Motors

2006 ◽  
Author(s):  
Luca Sgarbossa ◽  
Michele Dai Pre' ◽  
Silverio Bolognani
Keyword(s):  
Test Bench ◽  
Static Test ◽  
Synchronous Motors

Validation of a Linear Motor for Hyperloop Applications using a 3-axis Static Test Bench

2021 ◽  
Author(s):  
Jose Felix Gonzalez Rojo ◽  
Federico Lluesma-Rodriguez ◽  
Daniel Fons Sanchez ◽  
Anderson Pena Sabogal ◽  
Guillermo Regidor Perez
Keyword(s):  
Test Bench ◽  
Linear Motor ◽  
Static Test

scholarly journals Characterization of High-Power Turbomachinery Tilting Pad Journal Bearings: First Results Obtained on a Novel Test Bench

Lubricants ◽  
2018 ◽  
Vol 6 (1) ◽  
pp. 4 ◽  
Author(s):  
Enrico Ciulli ◽  
Paola Forte ◽  
Mirko Libraschi ◽  
Lorenzo Naldi ◽  
Matteo Nuti
Keyword(s):  
High Power ◽  
Test Bench ◽  
Journal Bearings ◽  
Tilting Pad ◽  
First Results ◽  
Tilting Pad Journal Bearings

scholarly journals Conceptual Design of a New Multi-Component Test Bench for the Dynamic Characterization of Running Specific Prostheses

Proceedings ◽  
2020 ◽  
Vol 49 (1) ◽  
pp. 75 ◽  
Author(s):  
Nicola Petrone ◽  
Gianfabio Costa ◽  
Gianmario Foscan ◽  
Francesco Bettella ◽  
Gianluca Migliore ◽  
...  
Keyword(s):  
Test Bench ◽  
Reaction Force ◽  
Dynamic Characterization ◽  
Prosthetic Foot ◽  
Load Combination ◽  
Stiffness Properties ◽  
Component Test ◽  
Static And Dynamic Loads ◽  
Force Components

Stiffness properties of running specific prostheses (RSP) for Paralympic runners are fundamental in the selection of the optimal running prosthetic foot (RPF) for sprint and jump events, depending on the athlete’s anthropometry and characteristics. RPFs are J-shaped or C-shaped, clamped to the socket or the pylon of the prosthetic leg. The aim of this work was to develop a test bench suitable for the static and dynamic characterization of a running prosthetic feet (RPF). Based on the evidence that the ground reaction force components change their relative orientation to the pylon or socket during the stance, loads were resolved in the socket reference frame and a multi-component test bench was designed and constructed. Two perpendicular actuators can apply static and dynamic loads to the foot while contacting a surrogate ground inclined at different angles. The preliminary tests show how the alignment, load combination, and ground angle can affect RPF stiffness curves.

Development of a Novel Ablative Composite Tape Layup Technology for Solid Rocket Motor Nozzle and Liquid Engine Liners

2015 ◽  
Vol 830-831 ◽  
pp. 417-420 ◽  
Author(s):  
L. Mohan Kumar ◽  
K.M. Usha ◽  
E.N. Anandapadmanabhan ◽  
P. Chakravarthy
Keyword(s):  
New Technology ◽  
Rocket Motor ◽  
Operating Conditions ◽  
Solid Rocket Motor ◽  
Cylindrical Blank ◽  
Static Test ◽  
Composite Tape ◽  
Good Potential ◽  
Solid Rocket

Solid rocket motor nozzles and liquid engine throats use ablative composite materials to protect the structures from the extremely severe operating conditions of high temperature, pressure and particle impingement. These ablative nozzle liners are processed from carbon phenolic/silica phenolic prepregs using a complex processing cycle. The process starts from impregnating the fibres with phenolic resin followed by either moulding or wrapping/winding prepreg tapes over metallic mandrels followed by polymerization under pressure. Traditionally, prepreg is cut into straight tapes and wound on mandrels to form the divergents. For throats and convergents, prepreg patterns are cut and stacked for curing. Plies of shape conforming to the development of base cone are cut from the prepreg and wound on the mandrel. After polymerization, the final required configuration is machined from this cylindrical blank after the liners are cured. The new method, described in this paper, replaces the straight-cut prepreg tapes by bias-cut prepreg tapes. These can be used for ablative liners in which the plies are at an angle to the direction of the flow. Bias tapes are cut at 45° to the warp and weft directions of the fabric to the required width and formed to the required frustum of cone. Since the cone is formed from straight cut bias tape, the fibre construction will be uniform around the circumference unlike the pattern cut tape. The efficiency of this process depends on the wrapping ratio which is in turn a function of the diameter, ply angle and tape width. To get the best wrapping ratio, shaped mandrels are used which brings down the material wastage and machining allowances. This paper describes the attempts to develop the Bias wrapping technology for angle wound liners. The details of process trials, challenges faced and how they were overcome, advantages of the process over conventional process etc are explained. Exhaustive material characterization of the material was done. Property comparison and validation of performance in subscale tests and a full scale static test are also discussed. The analysis indicates that this new technology has good potential in replacing the traditional tape-winding technology for rocket motor nozzle liners.

Test Bench for Characterization and Durability Tests of Motorbike Clutches

2021 ◽  
Author(s):  
G. Previati ◽  
M. Gobbi
Keyword(s):  
Test Bench ◽  
Friction Material ◽  
Operating Conditions ◽  
Test Rig ◽  
Automatic Transmissions ◽  
Different Temperatures ◽  
Durability Assessment ◽  
Good Repeatability ◽  
The One

Abstract In the paper, a new test bench for characterization and durability assessment of multi disc wet clutches for motorbike applications is presented. The design of the new test bench is inspired by the current SAE standards J2490 and J286 that refer to the testing of friction material for automatic transmissions wet clutches. Differently from the test bench described in the two standards, which is mainly designed to test the friction material, the test bench presented in this paper has been designed for testing the whole clutch, comprising all discs and the actuation mechanism. The lubrication system of the clutch utilized on the test bench is very similar to the one present on the actual motorbike. The design and instrumentation of the new test rig is analysed and discussed in the paper. The test bench has been used for the characterization of different motorbike clutches. The bench has proved to be able to measure the clutch characteristic for different temperatures and clutch wear levels. A very good repeatability of the tests has been achieved allowing for a comparison of different clutches design, friction material properties and operating conditions (temperature, ..). Some experimental results are presented and discussed in the paper.

Characterization of small Brushless motors for unmanned aerial vehicles/ Caracterização de motores Brushless de pequeno porte para veículos aéreos não tripulados

2021 ◽  
Vol 7 (6) ◽  
pp. 63447-63463
Author(s):  
Ivo Z. L. Meyer ◽  
José E. M. Barros ◽  
José E. M. Barros
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Motor Performance ◽  
Test Bench ◽  
Experimental Characterization ◽  
Servo Motor ◽  
Great Efficiency ◽  
Brushless Motors ◽  
Speed Controller ◽  
Aerial Vehicles

Brushless motors are increasingly present in our lives and to get the best out of them it is important to know their performance. The objective of this work is to create a methodology of experimental characterization of this type of motor. As a methodology, research was done on similar works, it was built a test bench and an acquisition system to obtain the data. The variables measured were: rotation, torque, temperature, current and voltage. In addition to possessing a servo motor that acts like brake prony type to vary the load applied to the system. The results obtained allowed the analysis of the motor performance. It was also possible to design a mathematical model that represents the system, using the information obtained and the equations present in the literature. It was possible to conclude that the bench and the methodology used were valid, and that the ESC (electronic speed controller) is a great efficiency limiter of the motors.

Design of a Solid Rocket Motor for Characterization of Spinning

2011 ◽  
Vol 63-64 ◽  
pp. 621-626
Author(s):  
Zai Cheng Wang ◽  
Chun Lan Jiang ◽  
Ming Li
Keyword(s):  
Rocket Motor ◽  
Structure Characterization ◽  
Test Results ◽  
Solid Rocket Motor ◽  
Ballistic Performance ◽  
Static Test ◽  
Rocket Propulsion ◽  
Working Performance ◽  
Solid Rocket

Although the rocket propulsion technologies have been used for several decades, the traditional motor can not meet the special rotating requirement. A kind of spinning solid rocket motor (SSRM) which used as power device of some kinds of dispenser was introduced. This kind of motor has the structure characterization for tangential nozzles. Its design scheme and prediction of interior ballistic performance were discussed. And the main factors should to be considered in design were analyzed comprehensively. In order to research working performance of the SSRM static test was carried out. The calculation and test results indicate that the design can satisfy general requirement of its application normally.

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