An Improved Method of Measuring Blade Vibration and Predicting Engine Durability

Abstract

This work seeks to establish the ability of an analytical model to predict the scatter in peak blade vibration amplitudes that occurs on bladed disk assemblies during tests of gas turbine engines. It then uses the resulting analytically generated statistics to investigate methods for selecting the number of blades that should be instrumented on a stage and methods for selecting which blades should be instrumented. In addition, it provides a method for calculating stage durability from the resulting test data. Keywords: Gas turbine blade vibration; Mathematical prediction; Mistuning; Optimizing instrumentation.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1987
Accession Number
ADA199758

Entities

People

  • J. H. Griffin

Tags

Communities of Interest

  • Energy and Power Technologies
  • Human Systems
  • Weapons Technologies

DTIC Thesaurus Topics

  • Cognition
  • Computer Programs
  • Control Systems
  • Databases
  • Finite Element Analysis
  • Gas Turbines
  • Information Processing
  • Information Science
  • Intelligence Analysts
  • Intelligence Products
  • Measurement
  • Psychology
  • Resonant Frequency
  • Statistics
  • Thinking
  • Turbines
  • Vibration

Readers

  • Aerodynamics.
  • Regression Analysis.