Accession Number:

ADA199758

Title:

An Improved Method of Measuring Blade Vibration and Predicting Engine Durability

Descriptive Note:

Final rept. Jul 84-Sep 85

Corporate Author:

GRIFFIN CONSULTING PITTSBURGH PA

Personal Author(s):

Report Date:

1987-04-01

Pagination or Media Count:

113.0

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.

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Mechanics
  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE