Effects of reinforcement geometry on the elastic and plastic behaviour of metal matrix composites

Workpiece surface quality when ultra-precision turning of SiCp/Al composites

“…There exists much non-uniformity in this kind of material. Reinforcements' size, volume fraction, shape, as well as their distribution have a significant influence on the mechanical properties and machinability of this particular class of materials (Mammoli and Bush, 1995). Furthermore, the matrix's type and the characteristics of reinforcement-matrix interface also have a decisive effect on the cutting mechanisms and consequently the machinability of SiC p /Al composites (Monaghan and Brazil, 1997).…”

Microstructure-based finite element analysis of failure prediction in particle-reinforced metal–matrix composite

“…In case of rigid interfacial bonding, particle may crack when the local stress reaches the fracture strength of particles. During tension, high stress develops in the matrix close to the tip of the particle along loading direction (Roatta and Bolmaro, 1997;Geni and Kikuchi, 1998;Steglich et al, 1999;Eckschlanger and Bohm, 2002;Leggoe et al, 1998;Eckschlager et al, 2002;Borbely et al, 2001;Segurado et al, 2003;Prangnell et al, 1996;Mammoli and Bush, 1995;Subramanian et al, 1995;Borbely and Biermann, 2000;Sun et al, 2003;Babout et al, 2004;Lorca, 1995). The stress concentration in the vicinity of the particle is due to the strain constraint in the presence of SiC particles.…”

“…The clustering of particles has considerable effect on strength and plastic behavior of composites. Elastic response of the composite is not much affected by clustering (Mammoli and Bush, 1995). Elastic modulus is highly sensitive to the volume fraction of reinforcement and somewhat less sensitive to particulate distribution (Subramanian et al, 1995).…”

The Application of a Representative Volume Element (RVE) Model for the Prediction of Rice Husk Particulate-Filled Polymer Composite Properties

“…whereby the addition of rigid particles worked to enhance the composite's modulus [44]. This increase in structural stiffness may be attributed to the increase in restrictions on the mobility of the polymer molecules from the increase in particles within the matrix, particularly in regions of matrix materials that were trapped within adjacent particles (Figure 8) [45].…”

“…10% increase in RHP content. This nominal change in stiffness between pure epoxy and 10% RHP samples suggested that the presence of some particles clusters in the low filler samples may have no significant effect on the composite elastic response[44] Alternatively, this observation may be reflective of the limited number of pure epoxy test samples which likely contributed to the erroneous representation of the test populations. In this study, only two pure epoxy samples were used for the calculation of Young's modulus, while four and six samples were tested for 10% and 30% RHP volume percentage, respectively.…”