Tensile Strength of Acrylic Adhesive used for Tubular Butt Joints under Repeated Impact Loads

Abstract

The impact fatigue strength of anacrylic adhesive under impact tensile load tested when repeated impact loads were applied to tubular butt joints. The material of the adherend was aluminium alloy A5052-H34. Anacrylic adhesive was Hardloc M-372-20 As experimental equipment was developed for the impact fatiguetest. The shape of specimen is hollow cylindrical but joint. In the impact fatigue test, the thickness of the adhesive layer was 0.1mm. The experiment was conducted at room temperature(23±2℃). Times of repeated impact load decrease as an initial incident stress value was increase. The specimen didn't fracture when the incident stress was 9MPa even though it was subjected to repeated impact loads 1 million times.Fracture occurred over at 10MPa. Therefore, the fatigue limit is considered to be 9MPa.