This research is an attempt to investigate the formation of moiré fringes for ultrasound waves. The ultrasound waves have a very high wavelength compared to optical waves so the grating with a pitch of several integer multiples of the ultrasonic wavelength is used to overcome the problem of diffraction and at the same time get moiré fringes with reasonably good contrast. The object cannot be placed close to the grating as in the case of optics because in the case of ultrasound the moiré fringes would have the contour interval comparable to the pitch of the grating so the elevation of some of points on the object above the grating needs to be much more than the pitch of the grating to get moiré fringes of constant out-of-plane elevation. For this reason the formation of Talbot images with ultrasound waves for the grating used is also studied and it is observed that at half Talbot distance the contrast of the shadow lines is higher than other distances.