Delamination models

Lastowka LA, Sheehan AF, Schneider JM (2001) Seismic evidence for partial lithospheric delamination model of Colorado Plateau uplift. Geophys Res Let 28(7) 1319-1322 Lithgow-Bertelloni C, Silver PG (1998) Dynamic topography, plate driving forces and the African Superswell. Nature 395 269-271... 

Mench et al. developed a technique to embed microthermocouples in a multilayered membrane of an operating PEM fuel cell so that the membrane temperature can be measured in situ. These microthermocouples can be embedded inside two thin layers of the membrane without causing delamination or leakage. An array of up to 10 thermocouples can be instrumented into a single membrane for temperature distribution measurements. Figure 32 shows the deviation of the membrane temperature in an operating fuel cell from its open-circuit state as a function of the current density. This new data in conjunction with a parallel modeling effort of Ju et al. helped to probe the thermal environment of PEM fuel cells. 

Sue. H.J.. Jones, R.E. and Garcia-Meitin, E.l. (1993). Fracture behavior of model toughened eomposites under mode I and mode II delamination. J. Mater. Sci. 28, 6381-6391. 

The permeability is affected not only by temperature, but also by relative humidity. For example, cellophane is an excellent oxygen blocker when dry, but becomes poor when moist. The values for permeability in Table 4.17 are strictly for flat materials. Real permeabilities can vary greatly due to flexural cracks, overlapping, and delamination that are common in real materials. There have been attempts, however, to model the diffusion in strained materials [16]. 

Fig. 24. Matsuda, et al. s model of the protein adsorption/denaturation/aggregation/desorption/ delamination process involved in the blood interactions of materials (from Ref. 127 , p. 357)...

The earliest works of trying to model different length scales of damage in composites were probably those of Halpin [235, 236] and Hahn and Tsai [237]. In these models, they tried to deal with polymer cracking, fiber breakage, and interface debonding between the fiber and polymer matrix, and delamination between ply layers. Each of these different failure modes was represented by a length scale failure criterion formulated within a continuum. As such, this was an early form of a hierarchical multiscale method. Later, Halpin and Kardos [238] described the relations of the Halpin-Tsai equations with that of self-consistent methods and the micromechanics of Hill [29],... 

D.H. Allen et al A cumulative damage model for continuous fiber composite laminates with matrix cracking and interply delaminations. ASTM Sp. Tech. Pub. 972, 57-80 (1988)... 

In addition to their potential applications, PLS nanocomposites are unique model systems to study the statics and dynamics of polymers in confined environments. Using both delaminated and intercalated hybrids, the statics and dy-... 

Fig. 14 Postulated models for the self-organization of the delaminating POEGMA-l7-PMPS-l -POEGMA and POEGMA-l -PS-l -POEGMA block copolymers over gold and glass substrates (cross section) [75]...

The amount of cmstal heat production is a key parameter for the distribution of temperatures in continental cmst. Eurther constraints may be obtained by smdying thermal aspects of models for the generation of average cmstal material, which involve thermally activated processes in one form or another, such as delamination and gravitational instability (lull and Kelemen, 2001). 

Allix O, Leveque D, Perret L, Identification and forecast of delamination in composite laminates by an interlaminar interface model. Comp. Sci Tech., 58, 1998, 671-678. 

The commercial finite element program, Abaqus [17], was used to calculate the stress distribution in an edge delamination sample. A fully three-dimensional model of the combinatorial edge delamination specimen was constructed for the finite element analyses (FEA). For clarity, some of the FEA results and schematics are presented as two-dimensional configurations in this paper (e.g.. Fig. 1). The film and substrate were assumed to be linearly elastic. The ratio of the film stiffness to the substrate stiffness was assumed to be 1/100 to reflect the relative rigidity of the substrate. This ratio also represents a typical organic... 

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