A Low Cost Shadow Moire Device for the Nondestructive Evaluation of Impact Damage in Composite Laminates

Abstract

Studies conducted under this Independent Exploratory Development (IED) project have concentrated on developing a field inspection instrument for the detection of low-velocity impact damage and delaminations in laminated composites and honeycomb sandwich structures. A low cost, hand-held battery- powered damage detector has been developed which can be operated under field conditions. This device can be used to detect minute surface perturbations resulting from foreign object impact that can cause disbond and/or delamination in aircraft structures. Since the operation of the device is simple and its detecting capability is not affected by temperature, humidity or vibration, it can be used under field operational conditions with minimum training. The entire detector system, including the power pack, weighs less than 3.5 lbs. Keywords: Shadow moire, Impact damage, delaminations, Composite structures, Nondestructive testing, IED, Optics, Interferometry, Shadow moire out-of-plane interferometric (SMOOPI) damage detector.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1990
Accession Number
ADA223451

Entities

People

  • Arthur E. Scotese

Organizations

  • Naval Air Warfare Center Warminster

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Aircrafts
  • Angle Of Incidence
  • Cameras
  • Composite Materials
  • Composite Structures
  • Corrosion Inhibition
  • Detection
  • Detectors
  • Digital Image Processing
  • Digital Images
  • Field Conditions
  • Image Processing
  • Instrumentation
  • Laminates
  • Light Sources
  • Test And Evaluation

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Sensor Fusion and Tracking Systems.
  • Structural Health Monitoring of Composite Structures.