The Research of IC Test Based on LTX-77 Test System

2014 ◽  
Vol 496-500 ◽  
pp. 1176-1179
Author(s):  
Li Tan ◽  
Yu Fang
Keyword(s):  
Test Object ◽  
Test System ◽  
Test Method ◽  
Test Results ◽  
Analog Ic ◽  
Test Platform ◽  
Logic Functions ◽  
Actual Test ◽  
Ic Test

LTX-77 test system is a large IC test system that is used for various kinds of analog IC, digital IC and analog digital mixed IC. It can be used to test DC parameters, AC parameters and logic functions. In the paper, the IC test platform is LTX-77 test system. IC ADC0804 was tested as the test object. The test method of IC is described in the view of actual test. The test results show that the test system is convenient and accurate, which has important practical value for IC manufacturers and users.

The Improved Friction Properties of Bonded MoS2 Films by MAO Treating of Al Substrate

2013 ◽  
Vol 275-277 ◽  
pp. 1911-1914 ◽  
Author(s):  
Han Jun Hu ◽  
Hui Zhou ◽  
Yu Gang Zheng ◽  
Kai Feng Zhang ◽  
Zhi Hua Wan
Keyword(s):  
Tribological Properties ◽  
Solid Lubricants ◽  
Ceramic Coatings ◽  
Test System ◽  
Test Method ◽  
Test Results ◽  
Specimen Test ◽  
Micro Arc Oxidation ◽  
A New Technique ◽  
Porous Microstructures

The bonded MoS2 films are widely used as solid lubricants in aerospace mechanisms due to their excellent tribological properties. Traditionally, the MoS2 was directly bonded on the Al substrate that was only treated by the technique named of sandblast. For improving the tribological properties of MoS2 films, micro arc oxidation (MAO) instead of sandblast was introduced as a new technique for treating of Al substrate. In this article, the tribological properties of MoS2 films which were bonded on different surface of Al substrate as mentioned above were discussed, respectively. It was concluded from the test results that the MoS2 films bonded on substrate treated by MAO have better tribological properties than those samples treated by sandblast. The endurance life against abrasion of the former is as high as twenty times of the latter by the stand test method of ball on disk using the UMT Multi-Specimen Test System. This test results could be illustrated by the following reasons. The first is the porous microstructures of MAO ceramic coatings on the Al substrate. The coatings have numerous pits to be good at increasing the binding force with the MoS2 films, and the pits can also provide a MoS2 lubricants reservoir during processes of friction. Both of them improved the MoS2 film’s ability of wear-protective. The second is that hardness of the coating is higher than the Al, and this ensures well wearing resistance, especially in practical application to big load-supporting moving parts, such as bearing, gear, etc…

A Test Method of CCD Photoelectric Parameters

2011 ◽  
Vol 317-319 ◽  
pp. 1119-1122
Author(s):  
Nao Sheng Qiao ◽  
Chun Mei Yao ◽  
Yan Li ◽  
Xue Juan Chen
Keyword(s):  
Output Voltage ◽  
Measurement Method ◽  
Test System ◽  
Test Method ◽  
Test Results ◽  
The Real ◽  
Real Relation ◽  
Comparison Of The Results ◽  
The Ideal

Until now, no effective method to measure CCD photoelectric parameters. To solve the problem, a novel measurement method that combines hardware with software is proposed, and it can let hardware and software collaborate with each other to finish assignment together. Firstly, the ideal relation between output voltage and input exposure quantity of CCD is given. Secondly, some main photoelectric parameters of CCD are elaborated. Then based on the principle, test system of CCD photoelectric parameters that combines hardware with software is designed. Lastly, the real relation between output voltage and input exposure quantity of CCD is given, and the test results of experiment of each photoelectric parameter are obtained according to the relation. What’s more, analysis and comparison of the results of the experiment are given in this paper. The method is reliable and the precision is high in the experiment.

scholarly journals Studi Kapasitas Lendutan, Daktalitas, dan Kekakuan pada Balok Beton Bertulang yang Diperkuat GFRP-S dengan Perendaman Air Laut Selama Satu Tahun

2019 ◽  
Vol 5 (2) ◽  
pp. 112
Author(s):  
Asri Mulya Setiawan ◽  
Erniati Bachtiar
Keyword(s):  
Test Object ◽  
Concrete Beam ◽  
Sea Water ◽  
Water Immersion ◽  
Reinforced Concrete Beam ◽  
Test Method ◽  
The Other ◽  
Test Results ◽  
Loading Method ◽  
Simple Supports

This study aims to analyze the deflection capacity, ductality and stiffness of reinforced concrete beam structures reinforced by GFRP with sea water immersion for 1 year. The test method used is a monotonic loading method that uses two simple supports over the test object and is pressed at a constant ramp actuator speed of 0.05 mm / sec until the concrete beam fails. The test results show that BF0 is more ductile compared to BF6 and BF12. This can be seen the existing deflection, where BF0 has a deflection that tends to be larger than the other beams. In BF0 specimens, the load that is able to hold is greater than BN specimens, but the resulting deflection is also greater

Tractor Hydraulic Lighten Testing System Based on OPC Technology

2012 ◽  
Vol 184-185 ◽  
pp. 614-620
Author(s):  
Yun Hong Sang ◽  
Liang Ma ◽  
Jian Ning ◽  
Shao Qing Li ◽  
Yi Tian Sun
Keyword(s):  
Test System ◽  
Control Circuit ◽  
Host Computer ◽  
Testing System ◽  
Labor Intensity ◽  
Test Results ◽  
Opc Technology ◽  
Actual Test

This paper proposes a tractor hydraulic lighten testing system based on OPC technology. OPC technology is well applied to Tractor Hydraulic Lighten Testing System. The host computer can directly communicate with PLC and AD module through OPC technology.The control circuit is greatly simplified, the entire experiments can be completed on PC.The operation is convenient; the system is reliable;the program is easy to debug;test types can choose automatic or manual mode.The actual test results show that the performance of device is stable and reliable.The automation degree of the test system is greatly improved, and the labor intensity of operators is greatly reduced.

Joint Development of a Package-Level Thermal Interface Material Test System

2009 ◽  
Author(s):  
Yanshu Susan Chen ◽  
Stanley Pecavar ◽  
Vadim Gektin
Keyword(s):  
Material Selection ◽  
Test System ◽  
Thermal Design ◽  
Test Method ◽  
Thermal Interface Material ◽  
Test Results ◽  
Performance Measurements ◽  
Thermal Interface ◽  
Application Performance ◽  
Successful Model

As the microelectronics industry continues to trend towards smaller, lighter, and higher power devices, thermal management is becoming more important than ever. Thermal interface materials (TIMs) play a crucial role in removing heat from both bare die and lidded packages. A serious challenge the industry has been facing is the lack of an agreed upon test standard that is specifically tailored for TIM thermal performance measurements between TIM suppliers and OEM customers. ASTM D 5470 is not necessarily the best gauge for TIMs in-application performance. Data generated by the OEM often differ from TIM supplier’s results, and thus can not be used confidently in thermal design. An OEM’s material selection can also prove to be unreliable when comparing data from different TIM suppliers. This paper presents a successful model that an OEM customer (Sun Microsystems) and a TIM supplier (LORD Corporation) have established for characterization of TIMs, and illustrates a package-level thermal test vehicle (TTV) setup for junction-to-sink thermal resistance measurements. Also presented are test results for several TIMs and repeatability of the test method. The effects of a few influencing factors, such as pressure load and TIM staging time, on the test results are also discussed.

Design of Digital Test Platform for Diesel Engine

2013 ◽  
Vol 333-335 ◽  
pp. 2314-2318
Author(s):  
Shu De Ji ◽  
Zhen Jia ◽  
Zhi Hong Wang ◽  
Ya Jun Liu ◽  
Xiao Yan Yuan ◽  
...  
Keyword(s):  
Control System ◽  
Cooling Water ◽  
Test Method ◽  
Test Results ◽  
Water Control ◽  
Overall Design ◽  
Test Conditions ◽  
Test Platform ◽  
Digital Test ◽  
Manual Manipulation

For the problem of manual manipulation and data asynchronous acquisition, the opinion of digital test was introduced. Based on the existing equipment, control and test method, the overall design of test platform was put forward. In the following, the data sharing, the software control system, dynamometer system, lube oil control system and cooling water control system were designed respectively. In the end, the digital test platform was developed. Under the new test platform, the test conditions can be adjusted automatically, the measurement device can be remote-controlled, the test data can be collected and recorded in synchronization and the test results can be sent to the designers in time.

DDS-Based Analog IC Test System for Audio ICs

2021 ◽  
Author(s):  
Yu Yanling ◽  
Wei Tianyu ◽  
Zhao Zhiwei ◽  
Wang Bin ◽  
Wang Fang
Keyword(s):  
Test System ◽  
Analog Ic ◽  
Analog Ic Test ◽  
Ic Test

scholarly journals The reliability acceleration test method of special vehicle transfer box

2021 ◽  
Vol 243 ◽  
pp. 02006
Author(s):  
Rui Liu ◽  
Wanying Liu ◽  
Yihui Zhao
Keyword(s):  
Product Development ◽  
New Product Development ◽  
New Product ◽  
Test System ◽  
Test Method ◽  
Reliability Test ◽  
Test Results ◽  
Development Cycle ◽  
Special Vehicle ◽  
Acceleration Test

This paper introduces the principle of the simulation load acceleration test system, the principle of accelerating test, and discusses the technology and method of the reliability acceleration test of the box.The accelerated test results show that the simulation load acceleration test can meet the reliability test of the unit, which can shorten the development cycle and have important production practical value for research and new product development.

Framework and performance analysis of college English testing system based on data mining technology

2021 ◽  
pp. 1-11
Author(s):  
Liu Narengerile ◽  
Li Di ◽  
Keyword(s):  
Data Mining ◽  
Test System ◽  
Test Time ◽  
Testing System ◽  
Test Results ◽  
System Software ◽  
Examination System ◽  
Mining Technology ◽  
College English ◽  
And Performance

At present, the college English testing system has become an indispensable system in many universities. However, the English test system is not highly humanized due to problems such as unreasonable framework structure. This paper combines data mining technology to build a college English test framework. The college English test system software based on data mining mainly realizes the computer program to automatically generate test papers, set the test time to automatically judge the test takers’ test results, and give out results on the spot. The test takers log in to complete the test through the test system software. The examination system software solves the functions of printing test papers, arranging invigilation classrooms, invigilating teachers, invigilating process, collecting test papers, scoring and analyzing test papers in traditional examinations. Finally, this paper analyzes the performance of this paper through experimental research. The research results show that the system constructed in this paper has certain practical effects.

scholarly journals Experimental Study of the Space–Time Effect of a Double-Pipe Frozen Curtain Formation with Different Groundwater Velocities

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3830
Author(s):  
Shicheng Sun ◽  
Chuanxin Rong ◽  
Hua Cheng ◽  
Bin Wang ◽  
Xiaogang Jiang ◽  
...  
Keyword(s):  
Freezing Temperature ◽  
Physical Model Test ◽  
Sand Layer ◽  
Test Results ◽  
Groundwater Velocity ◽  
Test Platform ◽  
The Difference ◽  
Freezing Test ◽  
Double Pipe ◽  
Thermal Physical Properties

Groundwater velocity has significant effects on the formation of a frozen curtain during freezing. In order to study the influence of the velocity on a frozen curtain, a large physical model test platform was established for double-pipe freezing. Based on this platform, freezing tests for different velocities were carried out. Quartz sand was selected as a similar material. The freezing temperature of the saturated sand layer was found by analyzing the results of the nuclear magnetic resonance (NMR). Based on the study of the thermal physical properties of the sand layer, the freezing test results were analyzed, and the results showed that the flow led to the differential development of the temperature between the upstream and downstream sections of the freezing pipes. Moreover, the larger the velocity, the greater the difference. The flow prolonged the overlapping time of the frozen curtains. Additionally, the flow slowed down the development of the frozen curtain area and the frozen curtain thickness. The larger the flow velocity, the greater the inhibition of the flow on the development of the frozen curtain. The test results can provide more references for the design and construction of freezing engineering with flowing groundwater.

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