Yu Y.-H.,Wuhan University of Technology |
Yu Y.-H.,Key Laboratory of Marine Power Engineering and Technology of Ministry of Communications |
Lu D.-S.,Wuhan University of Technology |
Yang J.-G.,Wuhan University of Technology |
Yang J.-G.,Key Laboratory of Marine Power Engineering and Technology of Ministry of Communications
Wuhan Ligong Daxue Xuebao/Journal of Wuhan University of Technology | Year: 2011
Acoustic emission signal occurs due to impact of valves opening and closing and impulse of cylinder pressure, which is characterized by a broad range of frequency and rich information about functioning and condition of diesel engines. Therefore, it has been used as a nondestructive examination method. In this work, three exhaust valve artificial fault experiments are conducted in a test platform of WP10.240N diesel engine in order to investigate the feasibility of monitoring the condition of exhaust valve of a diesel engine based on acoustic emission signals, the characteristics of the acoustic emission signals are extracted. It is shown that acoustic emission signals are sensitive and feasible to exhaust valve conditions.