Spherical Particle Impact Damage

A Feasibility Study of Vibration-Assisted Nano-Impact Machining by Loose Abrasives Using Atomic Force Microscope

“…This collision involves impacts of accelerated nanoparticles on the surface of a brittle workpiece. This process has close resemblance to the macroscale erosion process of brittle materials as a result of thç impact of solid particles, which has been extensively studied for many years [43][44][45][46]. Damage or material removal in brittle materials, as examined by several investigators in great detail, is found to happen in three regimes-elastic regime (Hertzian cone cracks), transition zone of elastic-plastic regime, and plastic regime-depending on .several impact parameters in the regime [47,48].…”

“…When this critical value (fc) is [34,59] and result in development of Hertzian cone cracks [43,44,60]. In order to understand the significance, the analytical model is tested on following hard and brittle materials: soda-lime glass, silicon, borosilicate glass (Pyrex), SÍO2, silicon carbide, and zirconia.…”

“…",) generated during the impact of the abrasive particle and the workpiece surface can be expressed as [34,43,44,46,56,57] …”

“…Critical load Pc for crack growth can be calculated using Auerbach's law [58] and Griffith energy balance condition [57] where [32,43,44,57] d.…”

Wear surface studies on coal water slurry nozzles in industrial boilers

“…In ceramics materials, erosion occurs by the propagation and the intersection of cracks produced by impacting particles. It is generally accepted that ceramic materials are eroded in the form of radial and lateral cracking, ring cracking and plowing on the surface [19,20].…”