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Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 31 , No. 3

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Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 31, No. 3, pp. 154-161
Abbreviation: J. Korean Soc. Manuf. Technol. Eng.
ISSN: 2508-5107 (Online)
Print publication date 15 Jun 2022
Received 26 Apr 2022 Revised 12 May 2022 Accepted 17 May 2022
DOI: https://doi.org/10.7735/ksmte.2022.31.3.154
Evaluation of NDE Characteristics for Measuring the Painting Thickness in Wind Energy Turbine Power Blades Based on Ultrasonic Wave Simulation
Gui-Lin Zhang^a ; Yun-Taek Yeom^b ; Sun-Kyu Kim^c ; Young-Tae Cho^d ; Yong-Deuck Woo^e ; Kwang-Hee Im^e^{, *}
aDepartment of Automotive Engineering, Graduate School of Woosuk University
bDepartment of Mechanical Engineering, Sungkyunkwan University
cDivision of Mechanical System Engineering, Chonbuk National University
dDepartment of Basic Scinence, Jeonju University
eDepartment of Automotive Engineering, Woosuk University


Correspondence to : ^*Tel.: +82-63-290-1473 E-mail address: khim@woosuk.ac.kr (Kwang-Hee Im).



Funding Information ▼ National Research Foundation of Korea 2021R1I1A3042195 Iowa State University

Abstract

In recent years, wind energy turbine blades have been manufactured using composite materials. Post manufacturing, these blades are painted with special coatings to protect the surface. Subsequently, they are generally tested by breaking a specimen and checking the uniform coating state using an optical microscope. A non-destructive technique is considered as an inspection tool; therefore, ultrasonic techniques are widely selected to measure thin painting thicknesses. In this study, the NDE (Nondestructive evaluation) CIVA package (CIVA 2020 software, NDE CIVA) was adopted for ultrasound simulation. The package was used to propose parameters, which brings the measurement of painting thickness based on the non-destructive ultrasonic waves. An optimal technique was also proposed with a use of the time and amplitude reflected from the surface and the back in the samples according to the blade painting thicknesses.


Keywords: Painting thickness, Ultrasonic testing, Ultrasonic transducer, Blades, Time of flight (TOF)

Acknowledgments

This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) (No.2021R1I1A3042195) and also experimentally helped by the CNDE at Iowa State University, Ames, IA, USA.

References


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Gui-Lin Zhang

Ph. D. candidate in the Department of Automotive Engineering, Graduate School of Woosuk University. His research interest is NDE on composites.

E-mail: zhengbao1203@naver.com

Yun-Taek Yeom

Research professor, Mechanical Research Center, College of Engineering, SKKU. His research interest is NDE modeling on composites.

E-mail: ytyeom@skku.edu

Sun-Kyu Kim

A full professor in Division of Mech. System Eng., at Jeonbuk Natl. University. He is interested in nondestructive testing and impact analysis of composite materials.

E-mail: sunkkim@chonbuk.ac.kr

Young-Tae Cho

An associate professor at the Dept. of Basic Science, College of Engineering, Jeonju University. He is interested in nondestructive testing and evaluation of infrared thermography and FEM analysis.

E-mail:dgycho@hanmail.net

Yong-Deuck Woo

A full professor in Dept. of Automotive Engineering at Woosuk University. He is interested nondestructive testing and analysis of composite materials and semiconductors.

E-mail: wooyongd@woosuk.ac.kr

Kwang-Hee Im

A full professor in Dept. of Automotive Engineering at Woosuk University. He is interested in T-ray/UT nondestructive testing and analysis of composite materials.

E-mail: khim@woosuk.ac.kr