title: A self-reciprocity calibration method for broadband focused transducers.
abstract: A procedure is developed for self-calibration of broadband, spherically focused ultrasonic transducers based on reciprocity. The input and received signals are measured in a pulse-echo configuration. These signals are used in conjunction with a multi-Gaussian beam model to obtain the electromechanical transfer function of the transducer. This calibration procedure is advantageous because it reduces the experimental configuration to a single transducer and a reflector. Experimental results indicate that the transfer function is insensitive to on-axis reflector placement. This result supports the feasibility of integrating the calibration procedure into actual testing in some situations.
authors.affiliation: School of Traffic and Transportation Engineering, Central South University, Changsha, Hunan, 410075, China zhangshuzeng123@163.com.
authors.forename: Shuzeng
authors.initials: S
authors.lastname: Zhang
authors.affiliation: Army Research Laboratory, Vehicle Technology Directorate, 4603 Flare Loop, Aberdeen Proving Ground, Maryland 21005-5069, USA christopher.m.kube.ctr@mail.mil.
authors.forename: Christopher M
authors.initials: CM
authors.lastname: Kube
authors.affiliation: School of Traffic and Transportation Engineering, Central South University, Changsha, Hunan, 410075, China songyf_ut@163.com, lixb_ex@163.com.
authors.forename: Yongfeng
authors.initials: Y
authors.lastname: Song
authors.affiliation: School of Traffic and Transportation Engineering, Central South University, Changsha, Hunan, 410075, China songyf_ut@163.com, lixb_ex@163.com.
authors.forename: Xiongbing
authors.initials: X
authors.lastname: Li