欢迎来到天天文库
浏览记录
ID:36642436
大小:2.11 MB
页数:63页
时间:2019-05-13
《金属常压储罐底板声发射源特性研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、分类号:TGl】528单位代码学号密衄Y891098北京工业大学硕士学位论文题目金属常压储罐底扳声发射源特性研究英文并列题目曼兰!!堕x!旦墨旦望!塑£垒!!!!!!!鲢△£Q坚!韭量虫i塾iQ坠堑!坐!垒!曼!!鲤婴!!!垒!坐垒业塾!!堑丛巫!!曼也!!g!!!坚k研究生姓名:臼沮专业:工程由堂导师姓名:张峦基——沈垃旦.研究方向:~匹左查矍塞全递定职称:熬援皿宜虽论卫报告提交日期2Q晒生』目学位授予只期——授予单位名称和地址jE壶王些太掌——一一业鏖直盟阻基卫玉国19Q量监姗北京工业大学工学硕士学位论文关键词常压储罐;声发射检测:漏磁检测;定位声速;信号处理
2、ABSTRACTThisp印erwassupportedbychinaspecialEquipmentInspe甜on&Researchcen订e,andnwasperfornledonthebaseofkeypr。jectof‘StudyofTechnologya11dExploitatjonofEquipmentsforB唔Stor89eOilTaIlk'belongingtot11eministryofscienceaI】dtechn010醪nleresearchputemphaSesonAcousticEmissionTeStingandMa髓eticFl
3、uxLeal(ageTeStinga11d仃iedtoeStablishthesefiesstandafdofthetwonlethodsabove.Thetraditionaltesnn&on-1inetes痂唱aIldopeninginspectionaregenerallyuSedforhuge咖osphericstoragetallks.Acous廿cEmissjontes石ngisonem面ormethodofon—l{netestjng,andbmain诬’kistOresolVetheekeyproblemsof】ocation,qual讯catiO
4、nandquanti打cation.Itmeansthattoconfi皿tllepositionofnaws,toanalyzethereaSoncausednawsa11dtoestablishthestandardofquannficationfordeterminingt11eseriousde酽eeofflaws.combiningbaSicexperimems锄deD舀neering印plication,majorobjectswereperformedanddiscussedin“spaperasfollows:(1).Loc砒ionspeedund
5、ermedifrerentmotivatingstyleandthemethodofconforminglocaIionspeed.Thespeeds盯e1350Ⅱl,s,11501T1/sa工ld1000州scorrespondingtomestorIehming,hanlmerhittinga11d1eadbreal(in岛a11dthe州ncipleofleastLucYvaluewasconfo皿ed.(2).Tos札dytlledi彘rencebe押eensi口alsrcspondingtodi施remmotivatingm锄ersaswellasbe铆
6、eensignalscome舶mmes锄eorigin,thedj髋rentmanagingmannersofwavelettransfbm,舶quencyanalysis,pertinencea11alysisandcbaract州sticcOemcientsOfwaveletregjonforsignaIinfomationwerepe—bmed.Thee圩brtof叫ngtodistinguish也es蟾nalsmotjvatedbydif话rentmallIlerS柚dtoconfi姗thesignaloriginthrou曲thereceivedinfo
7、rlllationwaSmade.Itwasjndicatedmatthemajor疗equencyofsignaIsforthreedia奄rentmotiVatjngmannersconcen仃atedbetween20aTld50KHz,tlledi舵rencebetweenwaveletcoe娟cientswaSsmall,andthepeninenceoftheori舀nalsi鲷aland也ereturnings蟾nalswaS10w(3).Theon.1inetes曲堰resultsforNo.r13伽1kjnzhenhaistorageCompan
8、ybyus
此文档下载收益归作者所有