Data reduction methodologies for single fibre fragmentation test: Role of the interface and interphase

Three-phase model and digital image correlation to assess the interphase effect on the elasticity of carbohdyrate polymer-based composites reinforced with glass–silica beads

“…For example, Biliaderis, Lazaridou, and Arvanitoyannis (1999) have shown that Young's modulus of starch-based blends decreases when the water content in the material increases. The measurement of the interphase properties is accessible experimentally using classical methods such as pull out, push-out tests (Chandra & Ananth, 1995;Chandra & Ghonem, 2001;Nozawa, Katoh, & Snead, 2009) and fragmentation test (Johnson, Hayes, & Jones, 2009;Tripathi & Jones, 1997;Zhou, Wagner, & Nutt, 2001), particularly for fibre-reinforced materials. Local measurement based on indentation are also utilised preferentially for thin films (Chicot, Démarécaux, & Lesage, 1996;Dehm, Ruhle, Conway, & Raj, 1997;Ho & Dual, 1996;Kharrat, Chateauminois, Carpentier, & Kapsa, 1997;Lee, Wang, Pharr, & Xu, 2007;Li & Siegmund, 2004;Zhang, Chen, & Li, 2004;Zhu & Bartos, 1997).…”

Room vs. temperature studies of model composites: modes of failure of carbon fibre/epoxy interfaces

“…Laser Raman spectroscopy (LRS) in conjunction with high-resolution scanning electron microscopy (SEM) and transmission polarised optical microscopy (TPOM) are employed to identify interfacial failure modes and trace their triggering mechanisms. Being an indirect method, the fragmentation test has been criticised for its efficiency to quantify interfacial shear strength (IFSS) due to (i) the unrealistic volume fraction, (ii) assumptions on the stress field and (iii) the stochastic nature of the fibre strength which lead to large data variations [20]. However, LRS may provide direct information on the stress field via the high-resolution monitoring (c. 1 lm) of the stress profiles of the fibre fragments [21].…”

Interpreting the single fiber fragmentation test with numerical simulations

“…Nairn and Liu [12] developed an analytical model that describes the interface through a fracture energy and a friction parameter which was later used by Kim and Nairn [13] to analyze their experimental data. Later extensions by Tripathi et al [14] and Johnson et al [15] added the effects of residual stresses and matrix plasticity to the original model. Further analytical models were also developed by Wu et al [16] and Hutchinson and Jensen [17] and more recently by Sørensen and Lilholt [18,19] taking into account friction and residual stresses but neglecting the effects of matrix plasticity.…”