光谱学与光谱分析
光譜學與光譜分析
광보학여광보분석
SPECTROSCOPY AND SPECTRAL ANALYSIS
2014年
2期
289-292
,共4页
刘桐%杨立军%王立君%王浪平
劉桐%楊立軍%王立君%王浪平
류동%양립군%왕립군%왕랑평
无源电探针%光谱诊断%光致等离子体%电子温度
無源電探針%光譜診斷%光緻等離子體%電子溫度
무원전탐침%광보진단%광치등리자체%전자온도
Passive probe%Spectrum diagnosis%Laser-induced plasma%Electron temperature
提出一种利用无源电探针探测激光焊接光致等离子体的方法。采用光电同步采集系统对激光焊接光致等离子体进行研究,利用无源电探针和光纤式光谱仪探测光致等离子体,利用等离子鞘层理论分析电信号,并运用相对光强法计算出光致等离子体的电子温度,比较同步光电信号分析结果。将不涂覆表面物质以及表面分别涂覆K F和T iO2三种情况下的计算结果进行对比,对影响结果准确性的因素进行分析。研究结果表明通过无源探针法计算等离子体温度与光谱信号计算结果基本吻合,准确度受等离子体离子质量的影响。无源电探针法能够反映激光焊接光致等离子体内温度变化,具有较好的实时性,可以作为激光等离子体监测手段。
提齣一種利用無源電探針探測激光銲接光緻等離子體的方法。採用光電同步採集繫統對激光銲接光緻等離子體進行研究,利用無源電探針和光纖式光譜儀探測光緻等離子體,利用等離子鞘層理論分析電信號,併運用相對光彊法計算齣光緻等離子體的電子溫度,比較同步光電信號分析結果。將不塗覆錶麵物質以及錶麵分彆塗覆K F和T iO2三種情況下的計算結果進行對比,對影響結果準確性的因素進行分析。研究結果錶明通過無源探針法計算等離子體溫度與光譜信號計算結果基本吻閤,準確度受等離子體離子質量的影響。無源電探針法能夠反映激光銲接光緻等離子體內溫度變化,具有較好的實時性,可以作為激光等離子體鑑測手段。
제출일충이용무원전탐침탐측격광한접광치등리자체적방법。채용광전동보채집계통대격광한접광치등리자체진행연구,이용무원전탐침화광섬식광보의탐측광치등리자체,이용등리자초층이론분석전신호,병운용상대광강법계산출광치등리자체적전자온도,비교동보광전신호분석결과。장불도복표면물질이급표면분별도복K F화T iO2삼충정황하적계산결과진행대비,대영향결과준학성적인소진행분석。연구결과표명통과무원탐침법계산등리자체온도여광보신호계산결과기본문합,준학도수등리자체리자질량적영향。무원전탐침법능구반영격광한접광치등리자체내온도변화,구유교호적실시성,가이작위격광등리자체감측수단。
An approach to detecting laser-induced plasma using passive probe was brought up .The plasma of laser welding was studied by using a synchronous electric and spectral information acquisition system ,the laser-induced plasma was detected by a passive electric probe and fiber spectrometer ,the electrical signal was analyzed on the basis of the theory of plasma sheath ,and the temperature of laser-induced plasma was calculated by using the method of relative spectral intensity .The analysis results from electrical signal and spectral one were compared .Calculation results of three kinds of surface circumstances ,which were re-spectively coated by KF ,TiO2 and without coating ,were compared .The factors affecting the detection accuracy were studied . The results indicated that the results calculated by passive probe matched that by spectral signal basically ,and the accuracy was affected by ions mass of the plasma .The designed passive electric probe can be used to reflect the continuous fluctuation of elec-tron temperature of the generated plasma ,and monitor the laser-induced plasma .