FATIGUE DAMAGE MONITORING IN COMPOSITES BY ULTRASONIC MAPPING.

Isaac Daniel*, Scott W. Schramm, Theodore Liber

*Corresponding author for this work

Research output: Contribution to specialist publicationArticle

2 Scopus citations

Abstract

Ultrasonic techniques were used to monitor flaw growth in graphite/epoxy laminates containing four types of initial flaws and subjected to fully reversed spectrum fatigue loading, including temperature and moisture variations. The initial flaws investigated were: circular hole, embedded film patch, internal ply gap and surface scratches. The specimen gage section was 5. 08 cm long and 3. 81 cm wide. In general, it was found that flaw growth was much more pronounced in the specimen exposed to environmental fluctuations in addition to the load spectrum, than in those tested in an ambient environment.

Original languageEnglish (US)
Pages834-839
Number of pages6
Volume39
No9
Specialist publicationMaterials Evaluation
StatePublished - Jan 1 1981

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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