A Study of Micro-Channeling on Glasses Using an Abrasive Slurry Jet

Calibrated CFD erosion modeling of abrasive slurry jet micro-machining of channels in ductile materials

“…The further development of ASJM requires models capable of predicting the shape and size of micromachined features without the need to conduct extensive testing. For example, Taguchi and dimensional analysis methods have been used by Pang et al [7,8] to predict the profiles of micro-machined channels; however, these modeling techniques require a relatively large set of experimental trials.…”

Erosion modeling in abrasive slurry jet micro-machining of brittle materials

“…Average waviness x Distance from the nozzle exit i Fraction of a given particle diameter in size distribution  Impact angle Poisson's ratio Half of indenter included angle vibration of the equipment [7]. Nouraei et al [8] developed a low pressure (1-4 MPa) ASJ prototype utilizing compressed air to propel the slurry through a 180 m sapphire orifice.…”

Process models for controlled-depth abrasive waterjet milling of amorphous glasses

“…At a certain penetrating depth, the turbulent flow no longer exists and is replaced by a transition or laminar flow [13]. Since AWJ milling is a nonthrough cutting process, the erosion in the bottom of the channel may be changed to the deformation wear mode [12], in which the accumulation of solid particles at the bottom of the channel that follow a vortex and damping flow may become a dominant material removal mechanism [28]. In this zone, the jet is more vulnerable to external influences such as mechanical vibrations caused by the acceleration/deceleration of the moving nozzle, which will be discussed in the next section.…”