Feasibility Demonstration of Using Pulse Laser Holographic Techniques to Inspect Naval Aircraft Engine Components.

Abstract

The feasibility of employing pulsed laser holographic interferometric inspection techniques to inspect turbine blades was investigated. Pulsed laser techniques allow holographic inspection to be deployed in other than a laboratory environment such as in an air rework or maintenance facility. Holographic testing was performed using individual TF41 HP1 turbine blades and assembled T56 HP1 turbine wheels. Several different optical configurations and dyanmic loading procedures were evaluated. Inspection of blades in a fully assembled wheel showed that locations of artificial cracks in the airfoil surface which were on the order of 0.050 long could be clearly resolved when using a transient loading technique. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 27, 1975
Accession Number
ADA035181

Entities

People

  • James E. Wright
  • Jerold L. Jacoby

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aircraft Engines
  • Aircrafts
  • Continuous Waves
  • Dynamic Loads
  • Engine Components
  • Engineering
  • Engines
  • Frequency
  • Lasers
  • Leading Edges
  • Load Distribution
  • New Jersey
  • Nondestructive Testing
  • Pulsed Lasers
  • Spacecraft
  • Turbine Blades
  • Turbine Wheels

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Materials Science (Mechanical Engineering).
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy