Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Comparison test block for creeping wave fault detection

A technology for comparing test blocks and creeping waves, which is applied in the direction of material analysis, measuring devices, and instruments using sound waves/ultrasonic waves/infrasonic waves, and can solve problems such as the lack of effective methods to determine the equivalent of defect reflections

Inactive Publication Date: 2012-12-12
CHINA SHENHUA ENERGY CO LTD +2
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the creeping wave propagates, most of its energy is mainly concentrated in a certain range under the surface, and unlike the surface wave, it is not sensitive to the surface roughness of the workpiece, so the creeping wave flaw detection method can detect cracks under the rough surface , but there is no effective method to determine the sensitivity of creeping wave flaw detection, and there is no effective method to determine the equivalent of flaw reflection

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Comparison test block for creeping wave fault detection
  • Comparison test block for creeping wave fault detection
  • Comparison test block for creeping wave fault detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0035] Such as Figures 1 to 6 As shown, the present invention provides a comparison test block for creeping wave flaw detection, wherein the comparison test block has a columnar structure, and one end of the comparison test block is provided with at least one first detection surface 10, the first detection The surface 10 is a part of the cylindrical surface and protrudes outward, the direction of the generatrix of the first detection surface 10 is consistent with the length direction of the comparison test block, and the first detection surface 10 is provided with a first detection groove 11, the first detection surface 10 The groove 11 is a groove of equal de...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Depthaaaaaaaaaa
Widthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a comparison test block for creeping wave fault detection, wherein the comparison test block has a column structure, in addition, one end of the comparison block is provided with at least one detection surface (10), the first detection surface (10) is a part of the cylindrical surface and is outwards projected, the bus line direction of the first detection surface (10) is the same as the length direction of the comparison test block, in addition, first detection grooves (11) are arranged in the first detection surface (10) and are grooves with the same depth, and in addition, the first detection grooves (11) extend in the circumference direction of the first detection surface (10). The first detection surface of the comparison test block can simulate the surface of an object to be tested, after a creeping wave probe is pasted with the first detection surface of the comparison test block, the first detection grooves arranged in the first detection surface can be used for determining the sensitivity during the creeping wave detection, and in addition, the reflection equivalent weight during the creeping wave fault detection can be determined.

Description

technical field [0001] The invention relates to the field of nondestructive testing, in particular to a comparison test block for creeping wave flaw detection. Background technique [0002] High-temperature fastening bolts are important parts of thermal power equipment in thermal power plants. In long-term operation, due to the effect of high temperature and high stress, the bolt material is prone to thermal embrittlement, creep, fatigue, and stress corrosion; due to excessive pre-tightening force and inadvertent burning of the center hole during installation, the bolt material is prone to cracks . In order to ensure the safe operation of equipment, it is very important to strengthen the effective inspection of high-temperature fastening bolts. [0003] At present, small-angle longitudinal wave detection methods, shear wave detection methods and creeping wave detection methods are often used to test whether cracks appear inside high-temperature fastening bolts. [0004] C...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N29/30
Inventor 王维东张允超
Owner CHINA SHENHUA ENERGY CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com