The Role of a Fatigue Damage Accumulation Plot in Structural Loads Data Analysis.

Abstract

The concept of displaying the accumulation of fatigue damage against time into flight is described. Two distinct modes of presentation are described: one called 'the ground mode' is suitable for use in ground analysis of load time histories and the other designated ' the snapshot mode' can be used in the real time environment. Examples drawn from operational aircraft loads data are used to demonstrate the usefulness of the display. The damage accumulation plot permits a ready identification of those flight conditions/flight activities which give rise to substantial fatigue damage. Thus it can be used to identify the structurally relevant flight data and so reduce the quantity of data that needs to be analysed in an operational loads measurement programme. It has many uses in the field of loads data analysis is of particular importance in advanced fatigue load monitoring systems, fleet management from a fatigue standpoint and in the specification of fatigue test loading sequences.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1982
Accession Number
ADA130112

Entities

People

  • Dorothy M. Holford

Organizations

  • Royal Aircraft Establishment

Tags

DTIC Thesaurus Topics

  • Aircrafts
  • Airframes
  • Computations
  • Control Systems
  • Data Acquisition
  • Data Analysis
  • Equations
  • Fatigue Life
  • Fatigue Tests (Mechanics)
  • Identification
  • Instrumentation
  • Load Monitoring
  • Measurement
  • Monitoring
  • Pattern Recognition
  • Strain Gages
  • Structural Loads

Readers

  • Aerospace Test and Evaluation
  • Systems Analysis and Design
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).