Photoacoustic measurement of thermal properties and thickness of buried layers in a multilayer film

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摘要 Thephotoacousticmodelofmultilayerwithastrong-absorbingsurfacelayerisdeveloped.Thephaseofph0toacoustiesignalismeasuredasafunctionofmodulatedfrequencyusingapparatustotallycontrolledbyacomputersystem.Thethermaldiffusivity,effusivityaswellasthicknessofseveralburiedlayersareobtainedindependentlythroughthebestfitofexperimentaldataaccordingtothetheoreticalmodel.Themultilayersofthinmetalandalloyfilmareinvestigated.Thismethodisprovedtobevaluableparticularlyinnondestructiveexaminationofsubsurfacephysicalproperties.
作者
机构地区 不详
出处 《声学学报:英文版》 1993年4期
出版日期 1993年04月14日(中国期刊网平台首次上网日期,不代表论文的发表时间)
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