II
Abstract
Bylearningthematerial,mechanicalandacousticpropertiesofaviationtransparent
parts,andunderstandingtheresearchstatusofexistingnondestructivetestingand
monitoringtechnologies,thedistributionofelasticconstantsofdirectionalplexiglassis
studiedbyultrasonicnondestructivetestingtechnology.Inthispaper,thedensityand
ultrasoniclongitudinalwavesoundvelocitytestofdirectionalplexiglasspartswere
completed.
Materialdensityismeasuredusingadensityelectronicbalance.Measurefivedry
weights,fivefloatweigh
定向有机玻璃弹性常数的超声无损表征-17724字.pdf