Issue 6, 2023

Classification of uneven steel samples by laser induced breakdown spectroscopy based on a Bessel beam

Abstract

Steel is one of the most widely used industrial materials in the world, and the classification of steel grades is of great concern in the steel industry. However, traditional analysis methods are time-consuming and complex, which are unsuitable for efficient detection. Gaussian beam-laser induced breakdown spectroscopy (LIBS) is widely used in steel analysis because of its speed and accuracy. However, the sample surface needs to be flat to keep the stability of LIBS, which limits the usage of LIBS. The Bessel beam, a non-diffraction beam with a long focal depth, has unique advantages in solving the variation of defocus caused by an uneven surface of the sample. To be suitable for industrial field inspection, a classification model for alloy steel samples based on a Bessel beam-LIBS system is established. In this study, the LIBS technology combined with a Bessel beam was used for the rapid detection and classification of steel samples with uneven surfaces. 510 LIBS spectra of 17 kinds of alloy steel based on a Gaussian beam and Bessel beam were collected separately, and based on the spectra, the recognition accuracies of alloy steel samples were compared between two systems. The spectra of uneven steel samples based on the Bessel beam-LIBS system can be definitely discriminated using support vector machines (SVMs), with an average accuracy of over 93.17%, which is better than that of the Gaussian beam. This research reflects the potential of Bessel beams in detecting samples with uneven surfaces and provides an effective method for industrial inspection.

Graphical abstract: Classification of uneven steel samples by laser induced breakdown spectroscopy based on a Bessel beam

Article information

Article type
Paper
Submitted
01 mrt 2023
Accepted
19 apr 2023
First published
11 mei 2023

J. Anal. At. Spectrom., 2023,38, 1232-1237

Classification of uneven steel samples by laser induced breakdown spectroscopy based on a Bessel beam

W. Yan, J. Lv, C. Zhu, Q. Li, J. Chen, L. Kang, B. Lu and X. Li, J. Anal. At. Spectrom., 2023, 38, 1232 DOI: 10.1039/D3JA00064H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements