Paper Title:
Using FEM Analysis for Evaluating Lifetime of the Turbine Blades Repaired by Different Kinds of Titanium and Nickel Alloys
  Abstract

With increasing attention being devoted to the problem of reducing service costs for a wide range of turbines and compressors, an attractive option is repair of damaged blades, instead of replacing them by new ones. A lot of different methods are used to repair blades and other parts of turbines and compressors. The processes of laser metal deposition (LMD) and direct laser forming (DLF) are modern methods used to repair blades made of titanium alloys. In the present study, the finite element analysis (FEM) has been applied to determine the stress-strain state of the repaired blades in service conditions. Different forms and sizes of the damaged zones have been analyzed. Several kinds of alloys, such as Incoloy 903, Carlson C800 and Inconel 718, appropriate for the LMD and DLF methods, have been utilized in repairing the blades. Two kinds of blades, with and without cooling hollows, have been examined. Lifetime of the repaired turbine has been evaluated by comparing the results obtained from the modal and stress-strain state analyses of the repaired and original parts. The results allow evaluating influence of sizes and forms of the damaged zones, as well as choice of the alloys applied, on lifetime of the repaired blades.

  Info
Periodical
Advanced Materials Research (Volumes 47-50)
Edited by
Alan K.T. Lau, J. Lu, Vijay K. Varadan, F.K. Chang, J.P. Tu and P.M. Lam
Pages
37-40
DOI
10.4028/www.scientific.net/AMR.47-50.37
Citation
A. Korjakins, S. Gluhihs, A. Popovs, A. Tiskunov, "Using FEM Analysis for Evaluating Lifetime of the Turbine Blades Repaired by Different Kinds of Titanium and Nickel Alloys", Advanced Materials Research, Vols. 47-50, pp. 37-40, 2008
Online since
June 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Jang Hyun Lee, Kyung Ho Lee, Kyung Su Kim
Abstract:The turbine wheels of a turbocharger are operated at high revolution speed in high temperature inlet gas. Alloy 713LC blades of the turbine...
1063
Authors: Yong Hui Xie, Di Zhang, Zhen Ping Feng
Abstract:Forced vibration and liquid corrosion are important reasons for last stage blade failure in steam turbine. In order to improve reliability...
613
Authors: F. Ismail, Shahjahan Mridha
Chapter 4: Materials
Abstract:The superalloy of Inconel 718 variety is widely used to produce compressor blade in gas turbine engine. The blade tip invariably wears in...
459
Authors: He Hui Wang, Shao Jie Zhang, Yao Gang Wang, Kai Shu Guan
II. Structural Integrity Evaluation and Experimental Methodology
Abstract:This paper describes an approach to identify the influence of mechanical properties of the materials under the condition of containing...
285
Authors: Chan Wang, Duo Qi Shi, Xiao Guang Yang
Chapter 4: Methods and Practice of Inspection, Monitoring and Assessment of Structural Integrity in Industry
Abstract: Ni-based superalloys are used as turbine blade material in which creep-fatigue is an important damage mechanism. Simulation and experiment...
498