A POWER LAW FATIGUE DAMAGE MODEL FOR FIBRE-REINFORCED PLASTIC LAMINATES

Following an earlier comparative investigation of the tensile fatigue response, in terms of stress versus log life curves, of three epoxy-resin-based laminates of 0/90 lay-up and reinforced with carbon, glass and Kevlar-49 fibres, the authors now present a study of the accumulation of fatigue damage in terms of the residual strength of the fatigued laminates. A stress-independent parametric relationship between normalised stress and normalised number of cycles is found to describe the behaviour of all three composites, suggesting a single major mode of fatigue damage despite the widely different mechanical characteristics of the different materials. The model is a two-parameter power law model, derived from a consideration of the appropriateness of various curve-fitting methods, and permits the incorporation of all modes of damage accumulation, from gentle 'wear-out' to 'sudden death', simply by the adjustment of this pair of power law exponents. .pa

• Supplemental Notes:
  • Proc.Instn.Mech.Engrs. Part C, 200 (1986), p.155 (No.C3) [12 pp., 14 ref., 3 tab., 10 fig.]
• Authors:
  • Adam, T
  • Dickson, R F
• Publication Date: 1986

Language

• English

Subject/Index Terms

• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00690120
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM