6飞机复合材料损伤机理及适航评定技术研究_硕士

南京航空航天大学硕士学位论文飞机复合材料损伤机理及适航评定技术研究姓名：彭明玉申请学位级别：硕士专业：载运工具运用工程指导教师：李艳军20080101IIIAbstractWiththedevelopmentofaviationtechnologyandmaterialscience,variousofnew-style,advancedmaterialsareintensivelyusedincivilaircraftindustry.Damagemechanism,failurestyleandrepairtechniqueofcompositematerialaredistinctfromthatofconventionalmetalmaterialduetoitscharactersuchasanisotropy.Relatedtechnologiessuchasdetection,maintenanceandairworthinesscertificationwillthusdefinitelyconfrontwithbothdevelopmentandchallenge.Howtobuildasafe,dependableandeconomicalcontrolsystemhasbecomeanurgentproblemnowadays.Amongthesementionedabove,NDIofcompositematerialsisofespecialimportance.Therearefourfailuremodesforlaminatedcompositewhicharematrixcrushing,delamination,fibertensilefailureanddebond.Afterthestudyoftheprocessingcharacteristicsofcompositematerials,fatigueandfracturemechanismofcompositesaretheoreticallyresearched,thetypicaldefectofcompositeandthecauseofthesedefectsincivilaircraftareallinvestigatedinthispaper.Theprincipletogetherwiththeapplicationrangeofwell-knownnondestructivetestingmethodsisalsostudied.Themostappropriatetestmethodcanhencebedeterminedaccordingtothedifferentcategoryandshape,aswellasthefailuretypeofthecomposite.Thedefectsofthecompositearefirstlyevaluated,theflowoftheevaluationonthedefectsisthenestablished.Therepairingmethodsforthedefectandtheflowoftherepairingcanbeascertainedsubsequently.Thedatabaseoffailureevaluationandrepairingaredesignedwhichinfactconstitutetheflowoftheairworthinessevaluation.Basedontheworkdoneabove,airworthinessevaluationsystemofcivilaircraftisfinallyconstructedinthispaper.KeyWords:Composite,AircraftStructure,NondestructiveTestmethods,DamageAssess,AirworthinessEvaluation,CivilAircraftV1.1777..................................11.2..............................21.3........................................42.1.........................112.2...............................122.3...........................................152.4...........................................182.5n.....................................192.6.................................212.7...............222.8CFRP................................222.9...........................232.10........................242.11........................242.12..................242.13........................253.1.............................................273.2.......................................273.3.............................................283.4...........................................283.5.......................................303.6.............................................313.7...........................333.8...........................333.9.......................................343.10................................................353.11......................................363.12..................................383.13......................................414.1.......................................484.2...................................484.3...................................504.4...........................................534.5.............................................544.6...........................................565.1...........................................585.2...............................................595.3.........................................605.4...............................................615.5...................................62VI5.6...........................................625.7...........................................635.8.................................645.9...................................645.10......................................655.11......................................655.12......................................665.13......................................675.14......................................672.1.....162.2.............................213.1.......................................443.2...................................454.1...............................464.2.............................494.3...................................524.4.........................554.5.............................55VIICFACMRTMRFICFRFFAASSIEDFDNDISRMAC,11.1[1]1960CFACM1970ACM20%30%7779.911%[2](1.1)1.177778750%2A320A322A33015%A34013%A38020%124550018%1.2[3]ATR4210%ATR-7220%AASIJETCRUZER5006/()ARJ2120001.21.2.11.22005B787A322B777MD90A321A340A330MD10B747-400A320A310A300-600B737-300B767B757MD90L1011B747DC9DC1019651970197519801985199019952000515253545FRP%3(1)(2)(3)(4)(5)/(6)41.31.2.2/1102/34[4]27355()67////8[5]1.2.36FAAAC20-1071981212TN81/04STPA/EGLBA1.3/NDTC-[6]107//()NDT/NDINDT/NDI12NDT832041.49102.12.1.1123112.1.21(1)(2)(3)(4)2.12(1)()(2)(3)()122.23(1)(2)()/[7]4006001000,20002.1.31[8]13233050708045678910142.2/(RTM)(RFI)2.2.1122.315PEEKPEKPEEKPEIPPS80RTMRFI1251702.33/2.2.21(,)()2RTMRFI162.1RTMRTMRTMRTMRTM2.3[9]172.3.112045-4590445-454525102()()()()7.5mm2.3.22.418ab2.411221212σεσετγ1112122266QQ0QQ000Q2.1[Q]11112211EQυυ=−122121121221122111EEQυυυυυυ=−−22212211EQυυ=−6612QG=[A]=()()11nijkkkkQZZ−=−∑2