摘要
针对超声表面强化技术要求,设计了基于稀土超磁致伸缩材料的超声强化换能器。通过对换能器整体结构进行磁场分析,模型的磁力线和磁流密度分布情况表明该换能器磁场封闭性良好,无明显漏磁现象,验证了其结构设计的合理性。基于该超声换能器的振幅输出实验,得到在电源的激励信号为方波、频率为15 kHz条件下,该换能器产生的输出振幅最大,达到11μm以上。
Aiming at the requirements of ultrasonic surface strengthening technology,an ultrasonic enhanced transducer based on rare-earth giant magnetostrictive material was designed.By analyzing the magnetic field of the whole structure of the transducer,the magnetic field line and magnetic flux density distribution of the model show that the magnetic field of the transducer is well sealed and no obvious magnetic leakage phenomenon happened,which verifies the rationality of structural design.Based on the amplitude output experiment of the ultrasonic transducer,the output amplitude of the transducer reaches over 11μm when the excitation signal of the power supply is a square wave and the frequency is 15 kHz.
作者
房善想
曾露平
初永臣
FANG Shanxiang;ZENG Luping;CHU Yongchen(School of Mechanical,Electronic and Control Engineering,Beijing Jiaotong University,Beijing 100044,China;China Railway Publishing House Co.,Ltd..Beijing 100054,China)
出处
《电加工与模具》
2019年第6期61-65,共5页
Electromachining & Mould
基金
中央高校基本科研业务费专项资金资助项目(2018YJS135)
江西省高等学校科技落地计划资助项目(KJLD14 044)
关键词
稀土
超声换能器
模态
磁场
rare-earth
ultrasonic transducer
modal
magnetic field
