A physically-based abrasive wear model for composite materials

Abstract

SUMMARY:A simple physically-based model for the abrasive wear of composite materials is presented based on the mechanics and mechanisms associated with sliding wear in soft (ductile) matrix composites containing hard (brittle) reinforcement particles. The model is based on the assumption that any portion of the reinforcement that is removed as wear debris cannot contribute to the wear resistance of the matrix material. The size of this non-contributing portion of the reinforcement is estimated by modeling the three primary wear mechanisms, specifically plowing, interfacial cracking and particle removal. Critical variables describing the role of the reinforcement, such as its relative size and the nature of the matrix/reinforcement interface, are characterized by a single contribution coefficient, C. Predictions are compared with the results of experimental two-body (pin-on drum) abrasive wear tests performed on a model aluminum particulate-reinforced epoxy matrix composite material.

Study of the effect of amino-functionalized multiwall carbon nanotubes on dry sliding wear resistance properties of carbon fiber reinforced thermoset polymers

“…Nevertheless, the frequency of these wear mechanisms, especially matrix cracks, were much lower for nFRC than for FRC. According to the evidence, the improvement experienced by the nFRC on the wear resistance at higher sliding distance is attributed to the influence of the MWCNTs content on the increase of the IFSS and on the matrix fracture toughness and hence, according to [10] to the improvement to the wear reduction.…”

“…Indeed, as established by Lee et al [10], if the fracture toughness of the matrix/reinforcement interface exceeds the minimum toughness of either constituent and the fracture in the reinforcement is not favorable, the resulting wear debris will be smaller in relation to the reinforcement size, thereby improving the wear resistance.…”

Finite Element Wear Behavior Modeling of Al/Al<sub>2</sub>SiO<sub>5</sub>/C Chilled Hybrid Metal Matrix Composites (CHMMCs)

“…The wear simulation tool works with FE simulation with surface geometries to get realistic contact pressure distribution on the contacting surfaces. The wear on both the interacting surfaces are computed using the contact pressure distribution [27][28][29].…”

Development of Advanced Wear and Corrosion Resistant Systems Through Laser Surface Alloying and Materials Simulations

“…Hence, the mechanism responsible for abrasive wear resistance of composite coatings involves the elastic, plastic, and viscous properties of the materials in contact [10], as well as the interfacial properties between the particles and matrix and fracture toughness of both phases [11][12][13]. Shown in Figure 6 is a diagram by Lee et al [14] illustrating the effect of particle volume fraction on wear rate based on two relationships using rule of mixtures and various experimental data [11,[15][16][17][18][19][20][21]. The straight-line between W m (wear rate of the matrix) and W p (wear rate of particles) in the figure represents a linear rule of mixtures with the wear rate being proportional to the particle volume fraction in the composite [22].…”