TY - JOUR
T1 - Fatigue life assessment of the centrifugal compressor impeller with cracks based on the properties of FV520B
AU - Liu, Chi
AU - Liu, Shujie
AU - Gao, Sibo
AU - Hu, Yawei
AU - Zhang, Shixin
AU - Zhang, Hongchao
N1 - Funding Information:
The authors gratefully acknowledge the financial support of the Major State Basic Research Development Program of China (973 Program, No. 2011CB013401 and No. 2011CB013402 ), and the Special Fundamental Research Funds for Central Universities of China (No. DUT14QY21 ). Also, thanks to the technical support from Professor Weiqiang Wang, et al in Shangdong University.
Publisher Copyright:
© 2016 Elsevier Inc.
PY - 2016/8/1
Y1 - 2016/8/1
N2 - Since centrifugal compressors have a wide range of applications, the reliability of impellers as the vital components should be ensured. Due to the complicated operating conditions, relevant properties of the impellers under working conditions are hardly monitored while they are indispensable for predicting fatigue lives of the impellers. In this paper, relevant calculating parameters are acquired based on the experimental data and the properties of FV520B. Meanwhile, quantitative relations between local stresses and crack sizes are obtained by finite element analysis of the impeller model with cracks. By the prediction model based on the dislocation theory and the fracture mechanics theory, fatigue lives of the impellers with specific crack can be predicted. Then, the failure criteria of the impeller are determined by the size of the crack.
AB - Since centrifugal compressors have a wide range of applications, the reliability of impellers as the vital components should be ensured. Due to the complicated operating conditions, relevant properties of the impellers under working conditions are hardly monitored while they are indispensable for predicting fatigue lives of the impellers. In this paper, relevant calculating parameters are acquired based on the experimental data and the properties of FV520B. Meanwhile, quantitative relations between local stresses and crack sizes are obtained by finite element analysis of the impeller model with cracks. By the prediction model based on the dislocation theory and the fracture mechanics theory, fatigue lives of the impellers with specific crack can be predicted. Then, the failure criteria of the impeller are determined by the size of the crack.
KW - Compressor blades
KW - Fatigue life
KW - Impeller failures
UR - http://www.scopus.com/inward/record.url?scp=84964389206&partnerID=8YFLogxK
U2 - 10.1016/j.engfailanal.2016.04.028
DO - 10.1016/j.engfailanal.2016.04.028
M3 - Article
AN - SCOPUS:84964389206
SN - 1350-6307
VL - 66
SP - 177
EP - 186
JO - Engineering Failure Analysis
JF - Engineering Failure Analysis
ER -