CAJ | 학술논문

涡流检测实质上就是通过运用法拉利电磁感应定律来反映金属导电材料表面缺陷和厚度变化。文章主要研究电涡流检测钢件淬火层厚度时表面阻抗的变化，通过阻抗变化来反映淬火层厚度的变化，经过数据处理得到待测钢件的厚度。由于在电涡流测厚传感器设计过程中会受到多种因素的干扰，对测量精度和可靠性有很大的影响，这里也对主要的干扰因素进行了推导和分析，通过对标准涂层试块进行测量和对数据的分析，能够大略的反映出淬火层厚度的变化。
와류검측실질상취시통과운용법랍리전자감응정률래반영금속도전재료표면결함화후도변화。문장주요연구전와류검측강건쉬화층후도시표면조항적변화，통과조항변화래반영쉬화층후도적변화，경과수거처리득도대측강건적후도。유우재전와류측후전감기설계과정중회수도다충인소적간우，대측량정도화가고성유흔대적영향，저리야대주요적간우인소진행료추도화분석，통과대표준도층시괴진행측량화대수거적분석，능구대략적반영출쉬화층후도적변화。
Eddy current testing is essentially to reflect the defects and surface variation of the metallic conductive materials using Ferrari's law of electromagnetic induction. This paper mainly studies the surface impedance variation when the thickness of the steel quenching layer is detected using electric eddy current, and the thickness of the steel piece under test is obtained after data processing. Since the design of the eddy current thickness measurement sensor is affected by various factors, resulting in significant influence on the measurement precision and reliability, here the main interference factors are deduced and analyzed. The experiment and data analysis on the standard coated sample shows that the quenching layer thickness can be reflected roughly.