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    • 2. 发明申请
    • Ultrasonic Testing Method
    • 超声波检测方法
    • US20120055251A1
    • 2012-03-08
    • US13222523
    • 2011-08-31
    • Naoyuki KONOAtsushi BABAYoshinori MUSHA
    • Naoyuki KONOAtsushi BABAYoshinori MUSHA
    • G01N29/07
    • G01N29/07G01B17/02G01N2291/0234G01N2291/02854G01N2291/102
    • An ultrasonic testing method is provided to measure a thickness of an object in a simple and highly accurate manner when crystal grains that form a metal solidification structure of a directionally-solidified material cast or the like have a statistical variation.An ultrasonic probe 102 causes a longitudinal ultrasonic wave to be incident on a test object 101 in a direction perpendicular to a surface 101A of the test object 101. As a velocity of the longitudinal ultrasonic wave, the average of velocities of longitudinal ultrasonic waves propagating in directions of crystal orientations , , and is used. The thickness of the test object 101 is measured on the basis of the velocity of the ultrasonic wave and a time period for the propagation of the ultrasonic wave.
    • 当形成定向凝固材料铸件的金属凝固组织等的晶粒具有统计学变化时,提供超声波测试方法以简单且高精度的方式测量物体的厚度。 超声波探头102使纵向超声波以与测试对象101的表面101A垂直的方向入射到测试对象101.作为纵向超声波的速度,纵向超声波的传播速度的平均值 使用晶体取向<100>,<110>和<210>的方向。 基于超声波的速度和超声波的传播时间来测定被测物101的厚度。