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Superposition of the notched strength of composite laminates
Author(s) -
Pipes R. Byron,
Gillespie John W.,
Wetherhold Robert C.
Publication year - 1979
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760191604
Subject(s) - superposition principle , materials science , composite laminates , composite number , composite material , sensitivity (control systems) , stacking , structural engineering , mathematical analysis , mathematics , physics , nuclear magnetic resonance , electronic engineering , engineering
An improved macroscopic model for predicting the strength of a composite laminate containing a circular notch is developed. Two constants are introduced which uniquely determine the notch sensitivity of a given material. A superposition method for the notched strength of composite laminates is developed which allows data for arbitrary materials and laminate configurations to be superimposed upon a single master curve. The influence of material orthotropy upon notched strength is discussed. A relative notch sensitivity parameter is introduced which allows quantification of the notch sensitivity of a given composite material system, stacking sequence, or laminate configuration.