An overview of key experimental data and theoretical representations on fracture processes in nanoceramics is presented. The focuses are placed on crack growth in nanoceramics and their toughening micromechanics. Conventional toughening micromechanisms are discussed which effectively operate in both microcrystalline-matrix ceramics containing nanoinclusions and nanocrystalline-matrix ceramics. ...

This paper presents an experimental study on the fundamental performances of a sprayed engineered cementitious composite (ECC) in repair systems. ECC serving as a repair material has been expected to be highly effective in providing durable repaired structures because of the tight crack width control and high delamination resistance. For this study, a polyvinyl alcohol (PVA) fiber-reinforced EC...

Plasma nanocoating of allylamine were deposited on the surfaces of multi-walled carbon nanotubes (MWCNTs) to provide desirable functionalities and thus to tailor the surface characteristics of MWCNTs for improved dispersion and interfacial adhesion in epoxy matrices. Plasma nanocoated MWCNTs were characterized using scanning electron microscopy (SEM), high-resolution transmission electron micro...

We study elasto-plastic deformations of unidirectional fiber reinforced polymeric composites (UFPCs) with fibers assumed to deform elastically and the matrix elasto-plastically. The matrix’s and hence composite’s plastic deformations are analyzed by using both the pressure-independent von Mises yield surface and the pressure-dependent Drucker–Prager yield surface and the associated flow rules. ...

We present a Bayesian methodology to infer the elastic modulus of constituent polymer and fiber orientation state in short-fiber reinforced composite (SFRP). The properties are inversely determined using only few experimental tests. Developing manufacturing digital twins for SFRP processes, including injection molding extrusion deposition additive (EDAM) requires extensive material characteriza...

abstract: Concrete in its macrostructure is a multiphase cementitious composite material, however, by reducing scale, it possible to identify the phases that compose it, among are those embedded microscale: hydrated silicates, mesoscale: cement paste, transition zones and aggregates macro phase: itself. Modeling this type of material with two-phase micromechanical models common literature, but ...

Crumb rubber modified bitumen (CRMB) can be regarded as a binary composite system in which swollen particles are embedded the matrix. Previous study has successfully implemented micromechanics models predicting complex moduli of CRMB binders using more representative constituent parameters. In regime master curves, while used predicted well high-frequency range, they underestimated modulus low-...