LIQUID TANK FOR ULTRASONIC INSPECTION

PURPOSE:To enable the flaw detectionof good accuracy by forming the bottom face of a liquid with the film fixing its periphery of the outer periphery of the liquid tank in the state having the value approximate to the sound inpedance of the liquid inside the liquid tank and having the slack deformable in an optional uneven shape. CONSTITUTION:The bottom face of a liquid tank A is formed by a film 2, for which those which are in extremely thin film thickness, several mu- scores mu, for instance, are used, although it varies according to the size of the liquid tank A and the shape of the flaw detection face of the body 4 to be inspected with which the external face of the film 2 comes in contact. The periphery of the film 2 is fixed to the circumference of the liquid tank A so as to leak no liquid 3 inside the liquid tank A, but in such case, the film 2 is fixed with a slack so that it can be closely fitted by deforming in the optional uneven face shape of the flaw detecting face of the body 4 to be inspected. For the material of the film 2 that which has the same or approximate value as or to the sound impedance of the liquid 3 and yet the strength to bear the tare weight of the liquid 3 in the film thickness is used. And in the liquid tank A an ulrasonic wave is emitted on the flaw detecting face of the body 4 to be inspected which is set outside the liquid tank A by the probe 5 dipped inside the liquid 3 and is received to the probe 5 almost as it is and the flaw detection can be performed with good accuracy.