Results 81 to 90 of about 135 (114)
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Design, Fabrication and Testing of CMC Turbine Blisk
Advanced Ceramics and CompositesLongbiao Li
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Aircraft Engineering and Aerospace Technology, 2000
Various techniques for manufacturing integrally bladed turbine disks (turbine blisks) are described, followed by a discussion of the development trend of turbine blisk manufacture. Analysis shows that powder metallurgy near‐net‐shape hot isostatic pressing will be the focus of future research for turbine blisk blanking, while electrical discharge ...
H. Zhan, W. Zhao, G. Wang
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Various techniques for manufacturing integrally bladed turbine disks (turbine blisks) are described, followed by a discussion of the development trend of turbine blisk manufacture. Analysis shows that powder metallurgy near‐net‐shape hot isostatic pressing will be the focus of future research for turbine blisk blanking, while electrical discharge ...
H. Zhan, W. Zhao, G. Wang
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Vibration Analysis of a Mistuned Axial Turbine Blisk
Volume 7B: Structures and Dynamics, 2019Abstract An axial turbine blisk for turbocharger applications is analyzed with respect to the effect of intentional mistuning on the forced response. Originally, the intentional mistuning pattern has been designed by employing a genetic algorithm optimization in order to reduce the forced response caused by low engine order excitation ...
Bernd Beirow +3 more
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Path Optimization for EDM of Rimed Turbine Blisks
Applied Mechanics and Materials, 2007Electrical discharge machining (EDM), as an effective method, can be used to implement the finish machining for turbine blisks. Searching an interference-free path for feeding an electrode through twisted tunnels of a rimed blisk was carried out. Based on the approach coefficient of free surface defined, the electrode kinematic constraints and object ...
Zhen Long Wang, Mao Sheng Li, X. Wu
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Experimental and Numerical Quantification of the Aerodynamic Damping of a Turbine Blisk
Journal of Turbomachinery, 2020AbstractAerodynamic damping is the key parameter to determine the stability of vibrating blade rows in turbomachinery design. Both, the assessments of flutter and forced response vibrations need an accurate estimate of the aerodynamic damping to reduce the risk of high cycle fatigue that may result in blade loss.
Christopher E. Meinzer, Joerg R. Seume
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Tool Path Generation for Machining Shrouded Turbine Blisk
Manufacturing Engineering and Materials Handling Engineering, 2004Shrouded turbine blisk is an important component for liquid-propellant rocket engine, airplane engine and some other high-power turbine machines. It is made from high-temperature alloy (e.g., nickel-base alloy and titanium alloy) and hence, is difficult to machine. In addition, its geometrical shape is complicated involving many semi-enclosed, twisted,
Xiang Wu, Wansheng Zhao, R. Du
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Design and Experimental Verification of Mistuning of a Supersonic Turbine Blisk
Journal of Turbomachinery, 2008A rotor blisk of a supersonic space turbine has previously been designed to allow for free flutter to occur in an air test rig (Groth Mårtensson, and Edin, 2010, “Experimental and Computational Fluid Dynamics Based Determination of Flutter Limits in Supersonic Space Turbines,” 132(1), p. 011010).
Pieter Groth +2 more
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Modal Analyses of an Axial Turbine Blisk With Intentional Mistuning
Volume 7B: Structures and Dynamics, 2017The potential of intentional mistuning to reduce the maximum forced response is analyzed within the development of an axial turbine blisk for ship diesel engine turbocharger applications. The basic idea of the approach is to provide an increased aerodynamic damping level for particular engine order excitations and mode shapes without any significant ...
Bernd Beirow +3 more
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Ceramic shell moulds for investment casting of low-pressure turbine rotor blisk
Ceramics International, 2021Abstract The investment casting process was adopted to cast a low-pressure turbine rotor (LPTR) blisk. The casting was carried out in vacuum at 1525 °C by using BZL12Y superalloy. Ceramic shell moulds for the casting were prepared by two different fillers (mullite and zircon), two types of colloidal silica binders (polymer-free binder-A and polymer ...
Y. Venkat +4 more
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