TY - JOUR
T1 - Thermomechanical fatigue failure investigation on a single crystal nickel superalloy turbine blade
AU - Wang, Rongqiao
AU - Jiang, Kanghe
AU - Jing, Fulei
AU - Hu, Dianyin
N1 - Publisher Copyright:
© 2016 Elsevier Inc.
PY - 2016/8/1
Y1 - 2016/8/1
N2 - A thermomechanical fatigue (TMF) test rig was developed consisting of the loading, heating, synchronizing, cooling and monitoring systems. Moreover, the specimen was particularly designed to provide adequate load-bearing capability at the blade tip in order to simulate the actual turbine blade loads in laboratory. TMF test on a single crystal nickel superalloy turbine blade was conducted. Then the specimen was segmented in a novel way to preserve the crack surface to investigate the TMF mechanism of the turbine blade. Visual examination together with the metallographic analysis indicated that the most severe TMF damage occurred at the pin-fin fillet on the suction side near the trailing edge. Furthermore, finite element simulation results were compared to the experiment, in which a viscoplastic constitutive model was employed.
AB - A thermomechanical fatigue (TMF) test rig was developed consisting of the loading, heating, synchronizing, cooling and monitoring systems. Moreover, the specimen was particularly designed to provide adequate load-bearing capability at the blade tip in order to simulate the actual turbine blade loads in laboratory. TMF test on a single crystal nickel superalloy turbine blade was conducted. Then the specimen was segmented in a novel way to preserve the crack surface to investigate the TMF mechanism of the turbine blade. Visual examination together with the metallographic analysis indicated that the most severe TMF damage occurred at the pin-fin fillet on the suction side near the trailing edge. Furthermore, finite element simulation results were compared to the experiment, in which a viscoplastic constitutive model was employed.
KW - Fatigue crack
KW - Fatigue testing
KW - Finite element analysis
KW - Turbine blade failure
UR - https://www.scopus.com/pages/publications/84965011479
U2 - 10.1016/j.engfailanal.2016.04.016
DO - 10.1016/j.engfailanal.2016.04.016
M3 - 文章
AN - SCOPUS:84965011479
SN - 1350-6307
VL - 66
SP - 284
EP - 295
JO - Engineering Failure Analysis
JF - Engineering Failure Analysis
ER -