Ultrasonic automatic flaw detector
专利汇可以提供Ultrasonic automatic flaw detector专利检索，专利查询，专利分析的服务。并且PURPOSE: To always hold a moderate feed water quantity, and to maintain a stable flaw detecting inspection by always measuring an acoustic coupling state between a material to be inspected and an ultrasonic probe, and controlling the feed water quantity from the surface and the inner surface echo levels.
CONSTITUTION: A mechanism part to which a probe holder is fixed is rotated, water is made to flow as a contact medium for coupling acoustically a gap between ultrasonic probes 10 (10a, 10b, 10c...) and a material to be inspected 1 such as a round bar or a pipe, etc., and an ultrasonic wave is propagated by setting a water column by a rotation. In this state, surface and inner surface echo levels are inputted from a signal sending and receiving device 8a, and whether an acoustic coupling is good or not is decided by an acoustic coupling operator 25. By a result of this decision, a bias generator 26 generates a positive or negative bias of a prescribed quantity in a set water quantity, and a positive or negative bias is added to a set quantity of a water quantity set digital switch 23 by an adder 27. Subsequently, a signal from the adder 27, and a signal which has A/D-converted 24 an output of a flow meter 22 are compared by a comparator 28, and opening and closing of an electrically-driven valve are controlled by its positive or negative signal.
COPYRIGHT: (C)1987,JPO&Japio，下面是Ultrasonic automatic flaw detector专利的具体信息内容。
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