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Crack measurement device and method

A technology for measuring devices and cracks, which can be used in measuring devices, using sonic/ultrasonic/infrasonic waves to analyze solids, and using sonic/ultrasonic/infrasonic waves for material analysis, etc., and can solve problems such as inability to accurately sense cracks

Inactive Publication Date: 2018-08-21
POHANG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, according to conventional methods, cracks formed in various directions in the rear surface of the structure may not be accurately sensed, and cracks may not be accurately sensed even when the crack distribution has a curved or irregular shape.

Method used

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  • Crack measurement device and method
  • Crack measurement device and method

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Embodiment Construction

[0034] Hereinafter, a crack measurement device and a crack measurement method according to exemplary embodiments in the present disclosure will be described with reference to the accompanying drawings.

[0035] In the blast furnace steel plate, which is a large-scale high-temperature and high-pressure vessel formed of a thick plate, many holes are drilled in order to supply coolant for cooling equipment, so that various stress concentration parts exist, and high heat in the blast furnace steel plate, fuel in the blast furnace steel plate, and The load of the raw material and the mechanical load caused by the gas pressure act differently, so that vertical cracks are generated in all directions in the blast furnace steel plate. In a structure formed of a thick material such as a thick plate, cracks generated in one surface of the structure cannot be confirmed on the other surface of the structure in many cases. Especially in a blast furnace, cracks grow from the inner surface of...

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Abstract

According to one embodiment of the present invention, a crack measurement device and a crack measurement method are provided. The crack measurement device according to one embodiment of the present invention comprises: an ultrasound sensor for emitting a first ultrasound wave, to be focused on the bottom surface of an object to be inspected, in the vertical direction of the bottom surface of the object to be inspected, and receiving a reflected wave reflected from the bottom surface of the object to be inspected; and a monitoring unit for providing information on cracks on the basis of the intensity of the reflected wave.

Description

technical field [0001] The present disclosure relates to a crack measurement device and method for measuring cracks generated in a structure. Background technique [0002] Various attempts have been made to measure cracks generated in structures using ultrasound. A general method of using ultrasonic waves to measure cracks generated in structures measures cracks by making ultrasonic waves incident on a structure to be inspected and receiving reflected waves. [0003] However, according to the conventional method, cracks formed in various directions in the rear surface of the structure may not be accurately sensed, and cracks may not be sensed accurately even when the crack distribution has a curved or irregular shape. Contents of the invention [0004] technical problem [0005] An aspect of the present disclosure provides a crack measurement device capable of more accurately providing measurement information on cracks including vertical cracks. [0006] An aspect of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/06G01N29/04G01N29/22G01N29/265
CPCG01N29/043G01N29/069G01N29/07G01N29/11G01N29/221G01N29/2437G01N29/265G01N29/28G01N2291/044G01N2291/051G01N2291/052G01N2291/055G01N2291/056G01N29/04G01N29/06G01N29/22G01N2291/0289
Inventor 崔相佑洪在锡金官泰申楠镐崔泰和
Owner POHANG IRON & STEEL CO LTD