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Linear Friction Welding of Ni-Co-Cr Superalloy for Blisk Assembly
Published in Samson Jerold Samuel Chelladurai, Suresh Mayilswamy, Arun Seeralan Balakrishnan, S. Gnanasekaran, Green Materials and Advanced Manufacturing Technology, 2020
P. Sivaraj, D. Manikandan, Vijay Petley, Shweta Verma, V. Balasubramanian
Airplane motors and mechanical gas turbines generally utilize bladed blower plates with singular airfoils tied down by nuts and bolts. An improvement of the part plate in addition to cutting edges is the blisk, in which circular discs and blade edges are manufactured as a single solid piece. The term ‘blisk’ is composed of the words ‘blade’ and ‘disk’. Blisks are also called integrated bladed rotors (IBR), meaning that blade roots and blade locating slots are no longer required (Mateo 2011).
Rotational feeding combined with shift feeding in the electrochemical trepanning of a blisk
Published in Machining Science and Technology, 2022
Gaopan Lei, Dong Zhu, Mingzhu Ren, Di Zhu
Blisks (blade integrated disks) are used in aero engines to improve their aerodynamic performance. Rather than the traditional method of using of a tenon and groove to connect each blade to the rotor disk, a blisk is made as a single part (Klocke et al., 2015a). The cross-sectional profiles of a blade on a blisk are generally irregular and they vary. In addition, the structure of a blade is characterized by spatial distortion and spatial bending. Because such complex blade structures are made from difficult-to-machine alloys, such as Inconel 718, the manufacturing difficulty is greatly increased (Kunieda et al., 2011). Electrochemical machining (ECM) is a non-contact processing method based on electrochemical anode dissolution. Its advantages include no residual stress, high material removal rate, no tool loss etc. (Jain et al., 2005; Rajurkar et al., 2017). Therefore, ECM is very suitable for producing blisks (Bogoveev et al., 2001).
Prediction of vibration characteristics of blisks using similitude models
Published in Mechanics Based Design of Structures and Machines, 2019
Zhong Luo, You Wang, Jingyu Zhai, Yunpeng Zhu, Deyou Wang
The blisks are widely used in the mechanical engineering due to their great stiffness and light weight, such as steam turbine, gas turbine, and aero engine (Liao et al., 2007; Sichani et al., 2012). Moreover, the vibration characteristic of blisks is one of the most significant research interests (Holland and Epureanu, 2013). However, employing the prototype directly in vibration experiments is arduous to machine or test, and it is time-consuming. Fortunately, the similitude design can address these problems. In addition, for some special cases, the thickness of the scaled-down model is too small for a machine. For example, the blade thickness of a scaled-down model of blisks may be too small. Therefore, distorted similitude design is a powerful tool to predict the vibration characteristics due to the limitation of structural parameters.
A methodology for filtering point cloud generated by CMM to apply NURBS
Published in Computer-Aided Design and Applications, 2018
Nowadays, as aeronautical technology develops, an output of turbine is increasing. A turbine is the most important part to get the propulsion of the airplane by compressing the air and injecting the fuel. As shown in Fig. 1, a BLISK is a single engine component consisting of a rotor disk and blades, which may be either integrally cast, machined from a solid piece of material, or made by welding individual blades to the rotor disk [2]. In recent years, a single material has been manufactured at one time for lighter weight, productivity, and maintainability. Due to the complicated shape of the BLISK, considerations such as raw materials and manufacturing methods are considered.