Study of Acoustic Attenuation Trends in Permendur 49 Magnetostrictive Material

IF 0.5 4区 材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING
M. Sheykholeslami, M. Allahdadi, M. Zeighami, M. Ghodsi
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引用次数: 0

Abstract

The mechanical properties of ferromagnetic materials change when the magnetization level of these materials changes. This phenomenon occurs due to magnetostriction. The change in direction of the magnetic domains is the reason for magnetostriction. In this paper, we hypothesize that the amount of acoustic attenuation in ferromagnetic materials depends on their magnetization level. To prove this hypothesis, a numerical approach is employed and the results compared to previous results in the literature. Permendur, an iron-cobalt alloy that exhibits a large magnetostriction effect, is used for the simulation. The results of the numerical study show that ultrasonic reflection and transmission coefficients in Permendur change in response to changes in the external magnetic field. A comparison between these numerical results and experimental results in the literature allows us to determine the changes in acoustic attenuation due to the magnetic field. The results show that there is an increasing trend at first, and then a decreasing trend, between acoustic absorption attenuation and increasing external magnetic field. This approach would be useful in ultrasonic testing of ferromagnetic materials when the reflected echoes are not detectable due to attenuation.The mechanical properties of ferromagnetic materials change when the magnetization level of these materials changes. This phenomenon occurs due to magnetostriction. The change in direction of the magnetic domains is the reason for magnetostriction. In this paper, we hypothesize that the amount of acoustic attenuation in ferromagnetic materials depends on their magnetization level. To prove this hypothesis, a numerical approach is employed and the results compared to previous results in the literature. Permendur, an iron-cobalt alloy that exhibits a large magnetostriction effect, is used for the simulation. The results of the numerical study show that ultrasonic reflection and transmission coefficients in Permendur change in response to changes in the external magnetic field. A comparison between these numerical results and experimental results in the literature allows us to determine the changes in acoustic attenuation due to the magnetic field. The results show that there is an increasing trend at first, and then a decreasing trend, between acoustic absorption attenuation and increasing external magnetic field. This approach would be useful in ultrasonic testing of ferromagnetic materials when the reflected echoes are not detectable due to attenuation.
磁致伸缩材料中声衰减趋势的研究
铁磁材料的力学性能随着材料磁化强度的变化而变化。这种现象是由磁致伸缩引起的。磁畴方向的改变是磁致伸缩的原因。在本文中,我们假设铁磁材料的声衰减量取决于它们的磁化水平。为了证明这一假设,采用了数值方法,并将结果与文献中先前的结果进行了比较。模拟采用具有强磁致伸缩效应的铁钴合金永久合金。数值研究结果表明,超声反射系数和透射系数随外加磁场的变化而变化。将这些数值结果与文献中的实验结果进行比较,使我们能够确定由于磁场引起的声衰减的变化。结果表明:声吸收衰减随外加磁场的增大呈先增大后减小的趋势;当反射回波由于衰减而无法检测时,该方法可用于铁磁材料的超声波检测。铁磁材料的力学性能随着材料磁化强度的变化而变化。这种现象是由磁致伸缩引起的。磁畴方向的改变是磁致伸缩的原因。在本文中,我们假设铁磁材料的声衰减量取决于它们的磁化水平。为了证明这一假设,采用了数值方法,并将结果与文献中先前的结果进行了比较。模拟采用具有强磁致伸缩效应的铁钴合金永久合金。数值研究结果表明,超声反射系数和透射系数随外加磁场的变化而变化。将这些数值结果与文献中的实验结果进行比较,使我们能够确定由于磁场引起的声衰减的变化。结果表明:声吸收衰减随外加磁场的增大呈先增大后减小的趋势;当反射回波由于衰减而无法检测时,该方法可用于铁磁材料的超声波检测。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Materials Evaluation
Materials Evaluation 工程技术-材料科学:表征与测试
CiteScore
0.90
自引率
16.70%
发文量
35
审稿时长
6-12 weeks
期刊介绍: Materials Evaluation publishes articles, news and features intended to increase the NDT practitioner’s knowledge of the science and technology involved in the field, bringing informative articles to the NDT public while highlighting the ongoing efforts of ASNT to fulfill its mission. M.E. is a peer-reviewed journal, relying on technicians and researchers to help grow and educate its members by providing relevant, cutting-edge and exclusive content containing technical details and discussions. The only periodical of its kind, M.E. is circulated to members and nonmember paid subscribers. The magazine is truly international in scope, with readers in over 90 nations. The journal’s history and archive reaches back to the earliest formative days of the Society.
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