Development of a Design Method for Advanced Ni-base Single Crystal Superalloy Blades in Gas Turbines

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420028
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Materials/Mechanics of materials
• Research Institution: Ritsumeikan University
• Principal Investigator: Sakane Masao 立命館大学, 理工学部, 教授 (20111130)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 低サイクル疲労 / 高温 / クリープ疲労 / 単結晶 / 超合金

Outline of Final Research Achievements

This study discussed the creep-fatigue life evaluation method for a nickel base single crystal superalloy used in a gas turbine blade. A creep-fatigue life evaluation method was proposed by analyzing the tension-torsion creep-fatigue data and equi-biaxial tension creep-fatigue data. Using the proposed method, a quality assurance method of actual gas turbine blade was developed. The method is to calculate the variation of von Mises stress with time on the critical points of actual gas turbine blades, and the fatigue damage was evaluated by the stress amplitude and creep damage by the frequency of the von Mises stress waveform.

Free Research Field

材料力学