公开(公告)号：US20150226705A1

公开(公告)日：2015-08-13

申请号：US14178100

申请日：2014-02-11

Applicant: Alliant Techsystems Inc.

Inventor： John K. Hartman ,  Lee H. Pearson

IPC: G01N29/09 ,  G01N29/12

CPC classification number: G01N29/11 ,  G01N29/225 ,  G01N29/265 ,  G01N29/343 ,  G01N29/348 ,  G01N29/4454

Abstract: A method for detecting defects in an object of interest comprises applying an ultrasonic signal including a tone burst having a predetermined frequency and number of cycles into an object of interest, receiving a return signal reflected from the object of interest, and processing the return signal to detect defects in the at least one inner material. The object may have an outer material and at least one inner material that have different acoustic impedances. An ultrasonic sensor system includes an ultrasonic sensor configured to generate an ultrasonic signal having a tone burst at a predetermined frequency corresponding to a resonant frequency of an outer material of an object of interest.

Abstract translation: 一种用于检测感兴趣对象中的缺陷的方法，包括将包括具有预定频率和周期数的音调脉冲串的超声波信号应用于感兴趣对象，接收从感兴趣对象反射的返回信号，并将返回信号处理 检测所述至少一种内部材料中的缺陷。 该物体可以具有外部材料和至少一个具有不同声阻抗的内部材料。 超声波传感器系统包括：超声波传感器，被配置为产生具有对应于感兴趣对象的外部材料的共振频率的预定频率的色调的超声波信号。