A Data Acquisition System for Wide Plate Tensile Testing Machine

A wide-plate tensile, data acquisition and processing technology, applied in the field of data acquisition system of wide-plate tensile testing machine, can solve the problems of incomplete acquisition signals, affecting the accuracy of the test, etc., to achieve real-time data acquisition and high reliability, The effect of preventing mutual interference and fast response
CN104198281BActive Publication Date: 2016-10-19BC P INC CHINA NAT PETROLEUM CORP +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
BC P INC CHINA NAT PETROLEUM CORP
Publication Date
2016-10-19

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Abstract

The invention discloses a data acquisition system for a wide plate tensile testing machine, comprising: a sensor module, a data acquisition and processing module; capable of collecting and processing crack opening displacement signals, point strain signals, and regional strains during the wide plate tensile test process signal, mechanical signal, displacement signal and temperature signal, the acquisition system has a fast response speed, a large amount of data processing, and can prevent mutual interference between various signals. At the same time, the crack opening displacement signal, regional strain signal, mechanical signal and displacement signal collected in real time during the test can also be fed back in time, and the test signal can be fed back to the industrial computer as the main control parameter of the test process. Take control. Therefore, the wide-plate tensile test data acquisition system has high response frequency, strong anti-interference ability, high real-time data acquisition and high reliability.
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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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