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Data acquisition system of wide plate tension test machine

A data acquisition system and wide plate stretching technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of incomplete acquisition signals, affecting the accuracy of the test, etc., achieve real-time data acquisition and high reliability, and prevent The effect of mutual interference and high response frequency

Active Publication Date: 2014-12-10
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

The existing test methods to collect signals are not comprehensive, which will affect the accuracy of the test

Method used

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  • Data acquisition system of wide plate tension test machine
  • Data acquisition system of wide plate tension test machine

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Embodiment Construction

[0014] In order to enable those skilled in the technical field to which the application belongs to understand the application more clearly, the technical solutions of the application will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0015] The following first introduces the overall structure during the wide plate tensile test.

[0016] During the whole test process, three structures are involved: the wide-plate tensile testing machine 1, the industrial computer 2 of the wide-plate tensile testing machine, and the data acquisition system 3 of the wide-plate tensile testing machine.

[0017] During the test, the data acquisition system 3 of the wide plate tensile testing machine is mainly used to measure various data of the wide plate tensile testing machine 1 in real time, namely crack opening displacement signal, point strain signal, area strain signal, temperature After the signal is integrated and processed, it is...

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Abstract

The invention discloses a data acquisition system of a wide plate tension test machine. The data acquisition system comprises a sensor module and a data acquiring-processing module, and is capable of acquiring and processing a crack opening displacement signal, a point strain signal, an area strain signal, a mechanics signal, a displacement signal and a temperature signal in a wide plate tension test; the data acquisition system has high reacting speed, achieves large data processing capacity and is capable of avoiding mutual interference among various types of data. Meanwhile, the crack opening displacement signal, the area strain signal, the mechanics signal and the displacement signal, which are acquired in the test process can be fed back in time, and test signals are fed back to an industrial personal computer to serve as main control parameters in the test process for controlling the test process. The data acquisition system is high in reacting frequency, strong in interference resisting capability, and high in real-time performance and reliability of data acquisition.

Description

technical field [0001] The invention relates to the technical field of girth weld evaluation of oil and gas pipelines, in particular to a data acquisition system for a wide plate tensile testing machine. Background technique [0002] Wide plate tensile test is an important research method for welding procedure qualification and welding reliability evaluation technology, which was first proposed by Wells in 1956. Subsequently, with the development of integrity assessment technology, this technology has gradually matured. In the past two decades, the wide-plate tensile test has been widely recognized in the field of pipeline steel research, and has been increasingly used in the evaluation of pipeline steel girth welds. and strain design. The wide-plate tensile test has the incomparable advantages of the small-size sample test. The wide-plate tensile test can more truly reflect the influence of uneven material properties and welding residual stress on structural performance, a...

Claims

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Application Information

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IPC IPC(8): G01N3/06
Inventor 姚登樽隋永莉郭锐姚学全靳海成曲凤霞
Owner BC P INC CHINA NAT PETROLEUM CORP
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