A COMPUTERIZED CONTROL AND DATA ACQUISITION SYSTEM FOR A UNIVERSAL TESTING MACHINE

1986 ◽  
Vol 17 (3) ◽  
pp. 315-330
Author(s):  
JAMES A. BARTSCH ◽  
NEIL B. McLAUGHLIN ◽  
R. E. PITT
2011 ◽  
Vol 328-330 ◽  
pp. 1963-1967
Author(s):  
Guang Li Yu ◽  
Li Hui Dang

The paper introduces the status of rolling bearing life testing machine in China first. Then, the paper mainly focuses on the design of vibration signal data acquisition system for rolling bearing life testing machine. The system is developed for a rolling bearing manufacturer based on Labview with perfect functions according to the requirement of the customer. The rolling bearing manufacturer can set up different measurement time and time interval for data record to carry out test according to the requirement of its customers. The developed vibration signal acquisition system is not subject to testing machine, which can run only that the sensors are installed on the measurement locations of testing machine. The developed system can be used for different rolling bearing life testing machine, so it has good application perspective in future.


2020 ◽  
Vol 18 (2) ◽  
pp. 159
Author(s):  
Yusuf Giri Wijaya ◽  
Abian Nurrohmad

In this research, the design of the force measuring system on main landing gear weight drop test for the LSU series that developed by LAPAN was carried out. The principle of this machine is to apply the load according to the weight of the aircraft on the main landing gear and drop it at a certain height assisted by the guiding rail. At the bottom of this machine there is a impact platform where each angle is mounted with a load cell that functions to measure the reaction force due to the impact of the main landing gear. In addition, there is a data acquisition system whose function is to process the output signal from load cell and display measurement data. The data acquisition system used consists of DAQ measurement hardware made by national instruments and LabVIEW software installed on a PC. The design of this testing tools aims to carry out a dynamic impact test on the main landing gear structure of the UAV. In this study, static calibration has also been successfully performed on the impact platform and shows consistent results for various test masses.


2014 ◽  
Vol 556-562 ◽  
pp. 1332-1337
Author(s):  
Li Xin Wang ◽  
Li Gang Zhai ◽  
Ya Yan Gao

Friction wear testing machine is generally used in researches of various friction wear mechanisms, explorations of influences factors, and property evaluations of friction pair materials. Measurement accuracy and automation level of the friction wear testing machine directly influence the precision of data acquisition and analysis processing, as well as the intuition of data displaying. Based on virtual instrument LabVIEW, a data acquisition system of friction wear testing machine was developed. Hardware of this data acquisition system mainly consists of sensors utilized as acquiring information on rotate speed, normal pressure, friction force and temperature, as well as signal conditioning module and data acquisition card. Utilizing the LabVIEW, data processing and interface displaying software was programmed. Debugging results confirmed that the developed system can accurately acquire the demand information when operating the friction wear testing machine, also intuitively display these obtained information in real-time. Therefore, the developed data acquisition system satisfies the demand of precisely acquiring information related to friction wear testing of experimental materials.


Author(s):  
Ziyad Tariq Abdullah

Aims: Study sustainability of Remanufacturing Aided Upgrading of Universal Testing Machine Business. Study Design: Sustainability assessment criteria are elicited, unified, normalized and weighted to find the mean global weights of economic, environmental, social, management and technical measures of sustainability. Place and Duration of Study: Middle Technical University, Institute of Technology-Baghdad, Mechanical Techniques Department, between January 2020 and August 2020. Methodology: Remanufacturing Aided Upgrading experience is used to project the suitable literature comparatively to construct sustainability assessment model. Remanufacturing Aided Upgrading are reviewed and modified to accommodate new changes that accompany the current case study. Decision making for selection of remanufactured alternatives and remanufacturing alternative in field of machine tools remanufacturing is reviewed. Experience in field of machine tool remanufacturing is exploited to remodeling of existence models to optimize a remanufactured lathe into CNC machine case study. Results: Remanufacturing Aided Upgrading of Universal Testing Machine can encounter four phases of upgradability so that Universal Testing Machine can be divided into: 1- Analog Display Universal Testing Machine 2- Digital Display Universal Testing Machine 3- Computer Display Universal Testing Machine 4- Electro-Hydraulic Servo Control Universal Testing Machine Such classification cannot fulfill structural analysis to study sustainability through prospective of remanufacturing added upgradability so structural analysis is required to be applied. Structural analysis can show that mechanical structure and hydraulic sub-systems are developing slightly through these four phases so they are remanufacturing oriented while control and data acquisition system encounters dramatically changes so that Universal Testing Machines are classified based on their specifications in control and data acquisition. According to Remanufacturing Aided Upgrading based sustainability prospective, Universal Testing Machine components can be classified into :- 1- Remanufacturing Aided Upgrading based design components 2- Remanufacturing based design components 3- Upgrading based design components 4- General purposes based design components Assessment matrices are of consistent weights with an error due to ambiguity, inexactness subjectivity, impreciseness and vagueness to an extent in some joints of the problem statement which requires future research. Conclusion: Literature based analysis and experience based analysis can be used to develop alternatives based analysis to elicit potentials to apply Remanufacturing Aided Upgrading of Universal Testing Machine to develop sustainable business. Technically, remanufacturing is the viable to be followed by economic and environment viabilities. There is a need to enhance the social and management viabilities because they are low. Assessment based classification lead to that Universal Testing Machine can be divided into: 1- Remanufacturing based Design Components which include Upper Cross Head, Moveable Cross Head, Lead Screws, Driving Sub-system, Upper Cross Head and Table Alignment Columns, Table, Machine Base Foundation, Hydraulic Cylinder and Hydraulic Pump. 2- Remanufacturing Aided Upgrading based Design components which include Load Control Valve, hydraulic oil returning valve and Pump Electrical Motor. 3- Upgrading based Design components which include Analog Display, Pendulum Load Cell, Elongation Translation Mechanism, Pressure Sensor, Load Cell, Encoder, Extensometer, Data Acquisition Card, Data Acquisition-Control Card, Computer Display Data Acquisition Software and Computer Display Data Acquisition-Control Software. 4- General purposes based design components which include piping system, Upper Cross Head Grips and Moveable Cross Head Grip.


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