• Makabe, Chobin
• Ferdous, Md. Shafiul
• Miyazaki, Tatsujiro
• Naka, Kaito

Abstract

<jats:p>Most of the failure accidents of machine equipment are related to the fatigue crack initiation and growth. Therefore, some research was performed to inspect crack initiation and to repair the cracked materials. Those studies are important for the safe operation of machines and to extend the machine life. We have shown some simple methods for arresting crack growth. Those methods are introduced in the present paper. First, a method of drilling stop holes near the crack tip is shown. In this method, additional holes were drilled in the vicinity of the main stop hole. Second, the method for inserting pins into stop holes is shown. Third, a method of applying a crack arrester for stopping the growth of long cracks is shown.</jats:p>

Topics

• impedance spectroscopy
• crack
• fatigue