Shear measuring method and its device
A resonant shear measuring method for simply measuring a resonant shear in a short time by Fourier-transforming the damping curve of the vibration on one side of a sample during the measurement of the shear response of the sample to obtain the resonant shear curve. An input signal (Uin) is inputted into a horizontal drive section of a resonant shear measurement unit. The vibration of one side of a sample clamped between the solid surfaces of the resonant shear measurement unit is detected as an output signal (Uout) by means of a displacement gauge. The output signal (Uout) along with the input signal (Uin) are inputted into a resonant shear measurement device. The shear response of the sample is measured together with the variation of the film thickness.
The damping curve of the vibration of the one side of the sample is Fourier-transformed by a Fourier transform section (5B) to obtain the resonant shear curve. A twin-path shear stress measurement device for precisely measuring a shear stress by a twin-path method for measuring the distance between opaque substrates.