IDEAS home Printed from https://ideas.repec.org/a/wsi/srlxxx/v27y2020i02ns0218625x1930003x.html
   My bibliography  Save this article

A Simple Method For Determining A Thickness Of Metal Based On Lock-In Thermography

Author

Listed:
  • A. ZRHAIBA

    (Industrial Engineering Laboratory, Faculty of Science and Technology, BP)

  • A. BALOUKI

    (Industrial Engineering Laboratory, Faculty of Science and Technology, BP)

  • A. ELHASSNAOUI

    (Industrial Engineering Laboratory, Faculty of Science and Technology, BP)

  • S. YADIR

    (#x2020;Laboratory of Electronics, Instrumentation and Energetic, Faculty of Sciences, B.P 20. 24000 El Jadida, Morocco‡Laboratory of Materials, Processes, Environment and Quality, National School of Applied Sciences, Cadi Ayyad University, Safi, Morocco)

  • H. HALLOUA

    (#x2020;Laboratory of Electronics, Instrumentation and Energetic, Faculty of Sciences, B.P 20. 24000 El Jadida, Morocco)

  • S. SAHNOUN

    (#x2020;Laboratory of Electronics, Instrumentation and Energetic, Faculty of Sciences, B.P 20. 24000 El Jadida, Morocco)

Abstract

The use of coatings is an important tool in the industry. It allows protecting against oxidation, corrosion and various types of fatigue. The coating thickness is an important characteristic that influences the quality and the performance of materials. In this paper, we develop a simple method of infrared lock-in thermography (LIT) to determine galvanizing coating thickness measurement, by using a sample multiple zinc layer with thickness ranging from 0.25mm to 1.5mm. The method has the particularity of taking a sinusoidal excitation heat flux which contributes with a heat exchange coefficient fixed at 10w/m2k and a surface emissivity of about 0.1. The finite element method (FEM) is used to model and analyze the thermal response of studied structure. The metal substrate used in this study is a structural steel, covered with six zinc layers. The finite elements analysis allows us to determine the temperature evolution at different points on the specimen. The Fourier transform method is used on the Matlab software to determine the phase angle of the data found. A correlation between the coating thickness and the equivalent phase angle is defined, and the results deduced show that the estimated values are close to the actual coating thicknesses with a precision ranging from 0.029mm to 0.011mm.

Suggested Citation

  • A. Zrhaiba & A. Balouki & A. Elhassnaoui & S. Yadir & H. Halloua & S. Sahnoun, 2020. "A Simple Method For Determining A Thickness Of Metal Based On Lock-In Thermography," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 27(02), pages 1-5, February.
    • Handle: RePEc:wsi:srlxxx:v:27:y:2020:i:02:n:s0218625x1930003x
    DOI: 10.1142/S0218625X1930003X
    as

    Download full text from publisher

    File URL: http://www.worldscientific.com/doi/abs/10.1142/S0218625X1930003X
    Download Restriction: Access to full text is restricted to subscribers
    File URL: https://libkey.io/10.1142/S0218625X1930003X?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Sławomir Gryś & Waldemar Minkina, 2022. "Noninvasive Methods of Active Thermographic Investigation: Short Overview of Theoretical Foundations with an Example of Application," Energies, MDPI, vol. 15(13), pages 1-22, July.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:wsi:srlxxx:v:27:y:2020:i:02:n:s0218625x1930003x. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Tai Tone Lim (email available below). General contact details of provider: http://www.worldscinet.com/srl/srl.shtml .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.