Advertisement

Reliability Assurance of Aircraft Structures

  • Herbert F. Hardrath
Part of the Sagamore Army Materials Research Conference Proceedings book series (SAMC, volume 24)

Abstract

Airworthiness certification requirements recently adopted by the U. S. Air Force rely heavily on damage tolerance to assure in-service reliability of airframes. FAA requirements are currently undergoing revision, and will also depend on damage tolerance characteristics of airframe structures. Two major impacts of these developments are evident. First, designers and operators will pay more attention to fatigue crack propagation rates and progressive deterioration of residual static strength than heretofore, and secondly, inspection will be an integral and acknowledged feature of continued reliability in service.

Keywords

Fatigue Failure Service Failure Damage Tolerance Aircraft Structure Fatigue Crack Propagation Rate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Payne, A.O.,“Determination of the Fatigue Resistance of Aircraft Wings by Full-Scale Testing”, in Full-Scale Fatigue Testing of Aircraft Structures, F.J. Plantema and J. Schijve, Eds., Pergamon Press, New York, 1961, pp 76–132Google Scholar
  2. 2.
    Harpur, N.F. and Troughton, A.J., “The Value of Full-Scale Fatigue Testing”, in Fatigue Design Procedures, E. Gassner and W. Schutz, Eds., Pergamon Press, New York, 1969, pp 343–75.Google Scholar
  3. 3.
    Anon., Summary of Airworthiness Directives for Larger Aircraft: Federal Aviation Regulations, Part 30, 1974, Federal Aviation Administration, Oklahoma City, OK.Google Scholar
  4. 4.
    Anon., Code of Federal Regulations, Title 14, Aeronautics and Space, Part 25, 1977, U. S. Government Printing Office, Washington, D.C.Google Scholar
  5. 5.
    Anon., Airplane Damage Tolerance Requirements, Military Specification MIL-A-83444 (USAF), 1974, U. S. Government Printing Office, Washington, D.C.Google Scholar
  6. 6.
    Anon., Airplane Structural Ground Tests, Military Specification, MIL-A-008867B (USAF), 1975, U. S. Government Printing Office, Washington, D.C.Google Scholar
  7. 7.
    Elber, W. and Davidson, J.R., A Materials Selection Method Based on Material Properties and Operating Parameters, NASA TN D-7221, April 1973, National Aeronautics and Space Administration, Washington, D.C.Google Scholar
  8. 8.
    Hardrath, H.F., “Fracture Mechanics”, J. of Aircraft, Vol. 11, No. 6, June 1974.Google Scholar
  9. 9.
    McCarthy, J.F., Tiffany, C.F. and Orringer, 0.,“The Application of Fracture Mechanics to Decisions on Structural Modifications of Existing Aircraft Fleets”, in Case Studies in Fracture Mechanics, T.P. Rich and D.J. Cartwright, Eds., U. S. Army Materials and Mechanics Research Center, Watertown, MA, 1977.Google Scholar
  10. 10.
    Davidson, J.R., “Reliability After Inspection”, in Fatigue of Composite Materials, ASTM STP 569, American Society for Testing and Materials, 1975, pp 323–34.Google Scholar
  11. 11.
    Davidson, J.R., “Reliability and Structural Integrity”, in Recent Advances in Engineering Science, Vol. 7, Scientific Publishers, Inc., 1977, pp 387–98.Google Scholar
  12. 12.
    Davidson, J.R., “Rationale for Structural Inspections”, Aircraft Safety and Operating Problems, NASA SP-416, October 1976.Google Scholar
  13. 13.
    Roderick, G.L. and Witcomb, J.D., “Fatigue Damage of Notched Boron/Epoxy Laminates Under Constant-Amplitude Loading”, in Fatigue of Filamentary Composite Materials, ASTM STP 636, American Society for Testing and Materials, 1977, pp 73–88/Google Scholar
  14. 14.
    Rhodes, M.D., Williams, J.C. and Starres, J.H., Jr., Effect of Low-Velocity Impact Damage in Compression Strength of Graphite/Epoxy Hat-Stiffened Panels, NASA TN D 8411, 1977.Google Scholar

Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • Herbert F. Hardrath
    • 1
  1. 1.NASA-Langley Research CenterHamptonUSA

Personalised recommendations