Critical fiber fragment length

The single-fiber fragmentation technique appears to be very sensitive to interphase conditions as reflected by the aspect ratios (critical fiber fragment length... 

Lacroix, Th., Tilmans, B., Keunings, R., Desaeger, M. and Verpoest, F. (1992). Modelling of critical fiber length and interfacial debonding in the fragmentation testing of polymer composites. Composites Sci. Technol. 43, 379-387. 

The ultimate fragment lengths ate approximated to equal the critical length for stress transfer, lc, which is related to the fiber diameter, d, strength, of, and the IFSS, r, through the expression ljd= Of/2r. This expression is derived from a simple force balance and predicts unique values for these quantities [16]. In... 

The brittle film cracking with plastic deformation of the ductile substrate at the interface has been described by using the shear lag model. " This model, which was proposed in the analysis of the fragmentation of fiber composites," " develops a relation for the critical stress producing the steady-state cracking of the film. It assumes that the interfacial shear stress, on the one hand, is activated at each crack tip along the characteristic slip length r, and, on the... 

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