Laser-Produced Strength Degradation of Plates in Tension and Tubes in Torsion

Abstract

Preliminary observations and conclusions regarding laser damage of tension plates and rotating torsion tubes of 7075-T6 aluminum alloy are presented. Good correlations between laser irradiance and physical damage measurements were observed. Load during laser damage has a beneficial effect on fracture strength of tension plates. Torsion tubes are highly susceptible to yielding crippling failure under combined load and narrow laser beam irradiation. Fracture mechanics procedures provide consistent results although scatter of damage and failure results indicate the advisability of using statistical rather than deterministic procedures.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1978
Accession Number
ADA060454

Entities

People

  • Jiro Adachi
  • John F. Beatty
  • Robert F. Anastasi

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Aircrafts
  • Aluminum Alloys
  • California
  • Engineering
  • Failure Mode And Effect Analysis
  • Fracture (Mechanics)
  • Laser Beams
  • Lasers
  • Materials
  • Mechanical Properties
  • Mechanics
  • Military Research
  • Statistical Analysis
  • Surface Properties
  • Test Facilities
  • United States

Fields of Study

  • Physics

Readers

  • Pulsed Power and Plasma Physics.
  • Structural Health Monitoring of Composite Structures.

Technology Areas

  • Directed Energy