Extracting device of defective signal in eddy current flaw detecting test
专利汇可以提供Extracting device of defective signal in eddy current flaw detecting test专利检索，专利查询，专利分析的服务。并且PURPOSE:To separate and extract a defective signal precisely, to make a eddy current flaw detecting test efficient and to save power for the test by forming a means for subtracting a signal for a supporting structure of a material to be tested from a composite signal and deciding whether the symmetry of respective closed curves of the obtained graphic display satisfies stored conditions for decision or not. CONSTITUTION:A composite signal for a heat transmission tube which is obtained by a eddy current flaw detector is stored in a memory 7 through an A/D converter 8 and a signal based upon a baffle plate of a supporting structure which has been previously stored in a memory 6 is substracted from said composite signal by a CPU5. Then, the CPU5 decides whether the vector display graph of the subtracted signal satisfies respective conditions of the vector display graph of a defective signal stored in the memory 6. When the defective signal is extracted, the CPU5 appreciates the depth of the defect and its volume on the basis of the relation between the phase angle of the defective signal which has been previously found out by using a reference specimen and the volume and the appreciated result is displayed on a CRT9 and recorded on recording paper or the like as the sectional picture of the heat transmission tube.，下面是Extracting device of defective signal in eddy current flaw detecting test专利的具体信息内容。
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