红外与激光工程
紅外與激光工程
홍외여격광공정
INFRARED AND LASER ENGINEERING
2015年
1期
6-11
,共6页
张金玉%孟祥兵%杨正伟%王冬冬%陶胜杰
張金玉%孟祥兵%楊正偉%王鼕鼕%陶勝傑
장금옥%맹상병%양정위%왕동동%도성걸
锁相%涂层厚度%数值模拟%数据拟合
鎖相%塗層厚度%數值模擬%數據擬閤
쇄상%도층후도%수치모의%수거의합
lock-in%coating thickness%numerical simulation%data fitting
在传热学基础上建立了涂层的三维瞬态导热模型,利用ANSYS仿真软件对施加有正弦规律变化热流密度的涂层试件进行有限元分析;运用两次加载、减法处理的方法有效克服了常量和环境因素带来的影响,然后讨论了数据拟合求相位的方法;改变加载频率,得到了多组涂层厚度与相位的定量关系曲线,从理论计算的角度揭示涂层厚度和相位及加载频率的定量关系;最后利用曲线中的线性线段,总结确定了涂层厚度与相位的定量关系,为利用锁相法对涂层厚度进行精确测量提供了理论依据。
在傳熱學基礎上建立瞭塗層的三維瞬態導熱模型,利用ANSYS倣真軟件對施加有正絃規律變化熱流密度的塗層試件進行有限元分析;運用兩次加載、減法處理的方法有效剋服瞭常量和環境因素帶來的影響,然後討論瞭數據擬閤求相位的方法;改變加載頻率,得到瞭多組塗層厚度與相位的定量關繫麯線,從理論計算的角度揭示塗層厚度和相位及加載頻率的定量關繫;最後利用麯線中的線性線段,總結確定瞭塗層厚度與相位的定量關繫,為利用鎖相法對塗層厚度進行精確測量提供瞭理論依據。
재전열학기출상건립료도층적삼유순태도열모형,이용ANSYS방진연건대시가유정현규률변화열류밀도적도층시건진행유한원분석;운용량차가재、감법처리적방법유효극복료상량화배경인소대래적영향,연후토론료수거의합구상위적방법;개변가재빈솔,득도료다조도층후도여상위적정량관계곡선,종이론계산적각도게시도층후도화상위급가재빈솔적정량관계;최후이용곡선중적선성선단,총결학정료도층후도여상위적정량관계,위이용쇄상법대도층후도진행정학측량제공료이론의거。
On the basis of the heat transfer, a three-dimensional heat conduction model was proposed. The coating applied sinusoidal variation of heat flux was analyzed using large-scale finite element analysis software ANSYS. The use of two loading and subtraction effectively overcome the effects brought about by the constant part and environmental factors. Then data fitting method for seeking phase was discussed. Changing loading frequency, multiple sets of the quantitative relationship curves were obtained. From the theoretical point of view, the relationship of the phase between the modulation frequency and thickness were revealed. Finally, using the linear stages in curves, the quantitative relationship between phase and thickness was identified. A theoretical basis for precise measurements of coating thickness using infrared lock-in method was provided.