| 초록 |
Delamination crack detection for laminated composite structure is very important to improve structural reliability of laminated composite structures. This requires real time delamination detection technologies. For the composite laminates that are reinforced with carbon fiber, an electrical potential method adopts the carbon fiber as reinforcements and sensors at the same time. The adoption of carbon fiber as sensors does not need to consider the strength reduction of smart structures induced by imbedding sensors into the structures. With carbon fiber reinforced epoxy matrix composites, it had been proved that the delamination crack was detected experimentally. In the present research, therefore, similar experiments were conducted to prove the applicability of the method for delamination crack detection of carbon fiber reinforced polyetherethereketone matrix composite laminates. Mode Ⅰand mode Ⅱ delamination tests with artificial cracks were conducted, and 3 point bending tests without artificial cracks were conducted. As a result, this method detected successfully delamination cracks. |
