High-Frequency Axial Fatigue Test Procedures for Spectrum Loading

Abstract

This Memorandum documents the procedures for conducting an axial fatigue test under variable amplitude (spectrum) loading conditions using an MTS 810 High-Frequency Test frame. Load-controlled fatigue testing under repeating block, variable amplitude loading histories can be performed at frequencies much higher than standard servo-hydraulic test frames by using a test frame that is optimized to run at higher frequencies. AIR 4.3 has conducted a research program to develop a test capability for performing such tests, using an existing MTS 810 test frame operated in servo-hydraulic mode. The test frame configuration was modified to maximize controller response during variable amplitude loading, and a closed-loop digital test frame controller with a command feedback compensation scheme was used to minimize controller error during testing.

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Document Details

Document Type
Technical Report
Publication Date
Jul 20, 2016
Accession Number
AD1017448

Entities

People

  • David T. Rusk
  • Robert E. Taylor

Organizations

  • Naval Air Warfare Center Aircraft Divison

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aerial Warfare
  • Aircrafts
  • Amplitude
  • Compensation
  • Data Rate
  • Failure Mode And Effect Analysis
  • Fatigue Tests (Mechanics)
  • Feedback
  • Frequency
  • Load Cells
  • Materials
  • Measurement
  • Operating Systems
  • Spectra
  • Standards
  • Test Equipment
  • Test Methods

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