表面技术
錶麵技術
표면기술
SURFACE TECHNOLOGY
2015年
5期
136-142
,共7页
表面粗糙度%比对试验%评价判据%相关性%一致性%应用软件
錶麵粗糙度%比對試驗%評價判據%相關性%一緻性%應用軟件
표면조조도%비대시험%평개판거%상관성%일치성%응용연건
surface roughness%contrast test%evaluating criterion%correlation%consistency%application software
目的：针对在与国外某汽车材料实验室进行冷轧薄钢板表面粗糙度比对试验中，没有统一评价判据的问题，对交流中提及的相关性和一致性进行系统研究。方法对评价方法遴选中涉及的数据，进行相关系数检验和配对t检验。结果经汽车板表面粗糙度比对试验数据验证，相关系数检验只适合评价两组试验数据是否具有线性相关关系；配对t检验，则适用于评价两组试验数据的均值之间是否具有一致性。通过应用实例，介绍了一种新开发的，在同一界面中既能显示配对t检验的定量评价结论，又能通过比对试验数据散点图几何中心点和坐标原点连线与45°理想位置线夹角的数值小于限制夹角为±1°的标准，直观显示比对试验的评价结果，编写完整结论的比对试验评价软件。±1°的评价标准是由大量的汽车板表面粗糙度比对试验数据统计确定的。结论由于汽车板表面麻点分布不均匀，所以在汽车板表面粗糙度比对试验中，只能采用一致性评价方法进行判断评定。
目的：針對在與國外某汽車材料實驗室進行冷軋薄鋼闆錶麵粗糙度比對試驗中，沒有統一評價判據的問題，對交流中提及的相關性和一緻性進行繫統研究。方法對評價方法遴選中涉及的數據，進行相關繫數檢驗和配對t檢驗。結果經汽車闆錶麵粗糙度比對試驗數據驗證，相關繫數檢驗隻適閤評價兩組試驗數據是否具有線性相關關繫；配對t檢驗，則適用于評價兩組試驗數據的均值之間是否具有一緻性。通過應用實例，介紹瞭一種新開髮的，在同一界麵中既能顯示配對t檢驗的定量評價結論，又能通過比對試驗數據散點圖幾何中心點和坐標原點連線與45°理想位置線夾角的數值小于限製夾角為±1°的標準，直觀顯示比對試驗的評價結果，編寫完整結論的比對試驗評價軟件。±1°的評價標準是由大量的汽車闆錶麵粗糙度比對試驗數據統計確定的。結論由于汽車闆錶麵痳點分佈不均勻，所以在汽車闆錶麵粗糙度比對試驗中，隻能採用一緻性評價方法進行判斷評定。
목적：침대재여국외모기차재료실험실진행랭알박강판표면조조도비대시험중，몰유통일평개판거적문제，대교류중제급적상관성화일치성진행계통연구。방법대평개방법린선중섭급적수거，진행상관계수검험화배대t검험。결과경기차판표면조조도비대시험수거험증，상관계수검험지괄합평개량조시험수거시부구유선성상관관계；배대t검험，칙괄용우평개량조시험수거적균치지간시부구유일치성。통과응용실례，개소료일충신개발적，재동일계면중기능현시배대t검험적정량평개결론，우능통과비대시험수거산점도궤하중심점화좌표원점련선여45°이상위치선협각적수치소우한제협각위±1°적표준，직관현시비대시험적평개결과，편사완정결론적비대시험평개연건。±1°적평개표준시유대량적기차판표면조조도비대시험수거통계학정적。결론유우기차판표면마점분포불균균，소이재기차판표면조조도비대시험중，지능채용일치성평개방법진행판단평정。
ABSTRACT:Objective Aiming at the problem of not having a unified evaluating criterion for the contrast test during the compari-son with a foreign auto material lab on the surface roughness of cold-rolled steel sheets, systematic study was carried out on the cor-relation and consistency mentioned in the communication. Methods This paper elaborated the correlation coefficient test and the paired t-test both concerned in the selection of evaluation methodologies. Results By the contrast test data verification of the auto sheet surface roughness, the correlation coefficient test was only suitable for evaluating whether the two groups of test data was line-arly correlated;the paired t-test was suitable to evaluate whether there was consistency between the averages of the two groups of test data. Based on application examples, a newly developed evaluation software of the contrast test was introduced. On the same interface, the software could not only display the quantitative evaluation conclusion of the paired t-test, but also visually display the evaluation result on the scattergram of the contrast test data via the value that was smaller than the limiting angle of ±1° standard of the angle formed by the line connecting the geometric center point to the origin of coordinate and the 45° ideal location line, and then draw a complete conclusion. ±1° standard was determined by a large number of statistical surface roughness contrast test data for the auto sheet. Conclusion Due to the uneven distribution of surface pits on the auto steel sheets, only the evaluation method for consistency could be used in the contrast test of auto sheet surface roughness.
