チョウ ヒデオ   CHO,Hideo
  長 秀雄
   所属   青山学院大学  理工学部 機械創造工学科
   職種   教授
言語種別 英語
発行・発表の年月 2015/02
形態種別 学術雑誌
査読 査読有り
標題 Characterization of the bond quality of adhesive plates utilizing zero-group-velocity Lamb waves measured by a laser ultrasonics technique
執筆形態 共同
著者・共著者 Hideo CHO, Yudai YAGUCHI and Hiroaki ITO
概要 The bonding quality of an adhesive component was estimated using the frequency of zero-group-velocity (ZGV) Lamb waves, which can be generated and detected with a laser ultrasonic technique. Two distinct peaks corresponding to ZGV Lamb waves in the amplitude spectrum were obtained for well- and weak-bonded adhesive plate samples. The frequency difference between the measured low frequency mode and the calculated frequency, which can be obtained by assuming a continuous stress and strain at a bonding interface, linearly increased with shear strength, as obtained by the shear-tensile test. The frequency of ZGV Lamb waves was also calculated with reduced shear modulus of the bonding layer to express a weak bonding, and the change in the calculated frequency in low frequency ZGV Lamb waves showed a similar tendency to that in measured one.