METHOD FOR MEASURING PHYSICAL PROPERTY VALUE OF SOLID MATERIAL SURFACE LAYER PART

摘要

PROBLEM TO BE SOLVED: To provide a method which enables a measurement of the density and vertical elastic coefficient of a solid material surface layer part in a non-destructive manner even in a case that the surface of the solid material surface layer part to be measured has an arcuate shape in addition to a planar shape. SOLUTION: An ultrasonic wave is transmitted to the solid material surface layer part and the sonic speeds of a leak creeping wave; a surface SV wave and a leak Rayleigh wave are respectively calculated from the receiving wave; the value of the damping coefficient of the leak Rayleigh wave is calculated using the receiving amplitude of the leak Rayleigh wave and a specific calculation formula; and the density and vertical elastic coefficient of the solid material surface layer part is finally measured from the values of the sonic speeds and the value of the damping coefficient. COPYRIGHT: (C)2007,JPO&INPIT