简介：OrganizedandsponsoredbytheAcousticalSocietyofChina(ASC),theFirstASCMembers‘sRepresentativeConferencewasheldfromNov.7—11,1988inTongJiUniv.,Shanghai.ThethirdmeetingoftheFirstCounciloftheASCandthefifthmeetingofitsStandingCommitteewereheldbeforetheConference.148representativesattendedtheConference.Intheopeningceremony,Prof.YingChongfu,PresidentoftheASC,gavetheopeningaddresswithabriefdescriptionofthepreparationandtheaimoftheConfer-ence.Prof.GuanDinghua,VicePresidentandSecretary-GeneraloftheASC,Pres-entedaworkreportonbehalfoftheFirstCounciloftheASC.Inhisrepory,Prof.GuansummarizedtheactivitiesanddevelopmentoftheASCinthepast3years.The

简介：TheevaluationofcreepdamagesofCr-Mo-Vsteelusedinthegasturbineofpowerplanthasbeencarriedoutusingtheline-focus-beam(LFB)acousticmicroscopy.Thevelocityofleakysurfaceacousticwave(LSAW)propagatednearthespecimensurfacewasusedforthequantitativeevaluations,whichwasmeasuredbyLFBacousticmicroscopyusingthev(z)curveanalysismethod.IthasbeenshownthatwiththeincreaseofcreepdamagefractionofmetalmaterialtheLSAWvelocitydecreasesobviously,whichsuggeststhepossibilityofnondestructiveandquantitativeevaluationsofcreeddamagesinmetalmaterialsbyacousticmicroscopy.