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Abstract <p>Operating conditions of fuel element cladding materials in nuclear reactors are characterized by intense radiation exposure capable of causing significant changes in their physical and mechanical properties. This work is devoted to the study of Lamb wave dispersion for materials used in fuel element (FE) cladding irradiated with 10 MeV fast electron beams. Complex measurements of the studied samples were carried out before and after irradiation. Irradiation-induced changes in practically important characteristics of steel plates were experimentally established. Based on the experimental data, refined dispersion dependences of Lamb waves were obtained, which made it possible to quantitatively estimate and analyze the degree of radiation modification of the acoustic and elastic characteristics of the material, as well as their correlation with the formation of radiation damage. It&#xa0;was found that Lamb waves excited in the zero symmetric mode are an effective source of information on the irradiation state of the material. The results of the conducted research are of certain interest for the development of the methodological base of ultrasonic nondestructive testing and in the field of physical materials science, related to increasing the reliability and durability of structural materials in extreme conditions. In particular, the obtained data can be used in the development of more accurate models for predicting the behavior of structural materials under conditions of intense radiation loads.</p>

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Dispersion of Lamb Waves in Steel Plates after Irradiation with Accelerated Electrons

  • 期刊论文

  • 发表日期：

    2025年11月1日

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  • A. V. Vasiliev,
  • D. V. Perov,
  • D. Yu. Biryukov,
  • V. N. Kostin,
  • A. F. Zatsepin

摘要

Abstract

Operating conditions of fuel element cladding materials in nuclear reactors are characterized by intense radiation exposure capable of causing significant changes in their physical and mechanical properties. This work is devoted to the study of Lamb wave dispersion for materials used in fuel element (FE) cladding irradiated with 10 MeV fast electron beams. Complex measurements of the studied samples were carried out before and after irradiation. Irradiation-induced changes in practically important characteristics of steel plates were experimentally established. Based on the experimental data, refined dispersion dependences of Lamb waves were obtained, which made it possible to quantitatively estimate and analyze the degree of radiation modification of the acoustic and elastic characteristics of the material, as well as their correlation with the formation of radiation damage. It was found that Lamb waves excited in the zero symmetric mode are an effective source of information on the irradiation state of the material. The results of the conducted research are of certain interest for the development of the methodological base of ultrasonic nondestructive testing and in the field of physical materials science, related to increasing the reliability and durability of structural materials in extreme conditions. In particular, the obtained data can be used in the development of more accurate models for predicting the behavior of structural materials under conditions of intense radiation loads.