ドットインパクトプリンタヘッドを用いた打音点検システムと欠陥検出手法についての基礎的検討

抄録

In this paper, a hammering test system using the impact head of a dot impact printer is introduced. The proccess involves hammering the object with the impact head and acquiring the sound generated using a microphone. The obtained signal is analyzed and an estimation of the state of the surface or the presence of internal defects are performed. As a first step, fundamental investigations were carried out using test specimens that had fatigue cracks which are representative defects. The result of the experiment shows that there is a difference between the test pieces with cracks and without cracks.