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Phased array repeatability test verification test block design method

A technology for test verification and design methods, which is applied in the direction of material analysis, measuring devices, and instruments using sound waves/ultrasonic waves/infrasonic waves.

Pending Publication Date: 2020-10-02
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The process used in phased array sector scanning is usually to excite a group of 31 angles of ultrasonic beams from 40° to 70° in a focal law. (60°) presents different angles. Therefore, the conventional test verification test block cannot meet the reference wave height of each reflector echo reaching 80% FSH, which leads to the inability to carry out the subsequent phased array detection system certification

Method used

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  • Phased array repeatability test verification test block design method
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  • Phased array repeatability test verification test block design method

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Embodiment Construction

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0032] like Figure 1 to Figure 5 As shown, in an embodiment of the present invention, the pipeline size is 2 "x6.4mm, and the groove form of the filling area is a V-shaped groove, and its phased array repeatability test verification test block design method comprises the following steps (in the test The block may be marked with weld centerline 11 and test piece centerline 12):

[0033] S100. According to the form and parameters of the weld groove, divide the weld into sections, which are divided into cover area, filling area an...

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Abstract

The invention discloses a phased array repeatability test verification test block design method, and the method comprises the following steps: dividing a welding seam into a cover surface region, a filling region and a root region in sequence according to a welding seam groove form and parameters; respectively configuring phased array fan-shaped scanning processes for the cover surface region, thefilling region and the root region; partitioning the upstream filling region, and configuring and filling an upstream reflector for each partition; disposing a cover surface upstream reflector in theupstream cover surface region; partitioning the downstream filling region and configuring and filling a downstream reflector for each partition; disposing a cover surface downstream reflector in a downstream cover surface region; disposing a root upstream reflector and a root downstream reflector for the upstream and downstream of the root region, respectively. Based on a phased array fan-shapedscanning process, the sizes and angles of the reflectors are optimally designed, so reflection echoes of the reflectors in all regions reach reference sensitivity in a repetitive test scanning process, and the repeatability of a phased array detection system is verified.

Description

technical field [0001] The invention relates to the technical field of nondestructive testing, in particular to a design method for a phased array repeatability test verification test block. Background technique [0002] At present, with the development of phased array inspection technology and the gradual improvement of related technical support standards, phased array inspection technology has gradually attracted attention in the field of marine engineering construction due to its advantages of high efficiency, environmental protection, and high precision. More and more non-destructive testing of marine steel structures, process pipes and seabed pipelines has begun to introduce phased array inspection technology. [0003] In particular, since 2014, submarine pipelines have introduced the design of sub-pipes and sub-pipes. The sub-pipes usually use carbon steel sea pipes with a diameter of 2 inches. There is radiation damage in conventional ray operations. Due to the limit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/30
CPCG01N29/30
Inventor 裴彪陈亮尤卫宏张俊杰张天江李睿尧吴员姜华徐振赵明达闫留青
Owner CHINA NAT OFFSHORE OIL CORP
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