The Technology of Ultrasound for Measuring the Thickness of the Pipe Lining

2013 ◽  
Vol 457-458 ◽  
pp. 1176-1180
Author(s):  
Xin Wang ◽  
Guo Xiang Li ◽  
Xuan Zhou
Keyword(s):  
Pipe Wall ◽  
Thickness Measurement ◽  
Dynamic Changes ◽  
Wall Lining ◽  
Ultrasonic Technology ◽  
Ultrasonic Thickness Measurement ◽  
Ultrasonic Propagation ◽  
Non Destructive ◽  
Ultrasonic Thickness ◽  
Technology Solution

For the issue of the industrial pipe wall lining the thickness of dynamic changes difficult to be measured, based on the principle of ultrasonic thickness measurement and ultrasonic propagation in solids and based on existing research and theory of ultrasonic, this topic has designed a ultrasonic technology solution for measuring the thickness of the pipe wall lining. This technology achieves online measurement and non-destructive thickness measurement. Through processing and analysis of the experimental results, it demonstrates the feasibility and reliability of the technology. This technology has great significance for improving the security and stability of the pipeline.

Non destructive testing thickness measurement by laser ultrasound under high temperature

Optik ◽  
2018 ◽  
Vol 172 ◽  
pp. 1140-1154 ◽  
Author(s):  
Suyuan Li ◽  
Haitao Wang ◽  
Ruipeng Guo ◽  
Jiyuan Zhao ◽  
Kai Zheng ◽  
...  
Keyword(s):  
High Temperature ◽  
Thickness Measurement ◽  
Laser Ultrasound ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Non Destructive

Evaluation of near-drum thinning data in recovery boiler generating bank tubes

TAPPI Journal ◽  
2016 ◽  
Vol 15 (7) ◽  
pp. 491-500
Author(s):  
W.B.A. SANDY SHARP ◽  
W.A. BILLY JONES
Keyword(s):  
Finite Element Analysis ◽  
Thickness Measurement ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Element Analysis ◽  
Data Set ◽  
Industry Standard ◽  
Recovery Boiler ◽  
Thickness Measurements ◽  
Non Destructive

Near-drum thinning affects the fireside surface of recovery boiler generating bank tubes near the surface of the mud drum. Although sophisticated thickness scanning equipment has been developed to rapidly make tens of thousands of thickness measurements in the portion of a tube that is vulnerable to near-drum thinning, methods for using these data to evaluate fitness-for-service have not shown similar advances. Non-destructive testing companies typically use a technician’s subjective judgment to identify the “thinnest reliable" thickness measurement on each tube. Some mills decide whether tubes can continue in operation or should be plugged or replaced based on this single thickness measurement. However, finite element analysis of the remaining strength of individual tubes thinned in the near-drum area suggests that it is essentially impossible to identify the weakest tubes from simple empirical rules. In the absence of an industry standard for evaluating these data, different mills could reach different conclusions about the fitness-for-service of a tube from the same data set. This paper reviews the technology for scanning the thickness of generating bank tubes and discusses approaches that have been used to identify the tubes most weakened by near-drum thinning and to evaluate the fitness-for-service of individual tubes.

scholarly journals Non-Contact, Non-Destructive Testing in Various Industrial Sectors with Terahertz Technology

Sensors ◽  
2020 ◽  
Vol 20 (3) ◽  
pp. 712 ◽  
Author(s):  
Yu Heng Tao ◽  
Anthony J. Fitzgerald ◽  
Vincent P. Wallace
Keyword(s):  
Construction Industry ◽  
Material Characterization ◽  
Manufacturing Industry ◽  
Thickness Measurement ◽  
Thz Spectroscopy ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Industrial Sectors ◽  
Terahertz Technology ◽  
Non Destructive

In this article, we survey various non-contact, non-destructive testing methods by way of terahertz (THz) spectroscopy and imaging designed for use in various industrial sectors. A brief overview of the working principles of THz spectroscopy and imaging is provided, followed by a survey of selected applications from three industries—the building and construction industry, the energy and power industry, and the manufacturing industry. Material characterization, thickness measurement, and defect/corrosion assessment are demonstrated through the examples presented. The article concludes with a discussion of novel spectroscopy and imaging devices and techniques that are expected to accelerate industry adoption of THz systems.

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