SUBJECT: Ph.D. Proposal Presentation
BY: Dongmin Han
TIME: Thursday, February 22, 2018, 4:30 p.m.
PLACE: Love Building, 210
TITLE: Slicing of Tessellated Models for Additive Manufacturing Based on Variable Thickness Layers
COMMITTEE: Dr. Thomas Kurfess, Chair (ME)
Dr. Christopher Saldana (ME)
Dr. Tommy Tucker (Industry)
Dr. Katherine Fu (ME)
Dr. Yan Wang (ME)


In Additive Manufacturing (AM) systems, the Computer Aided Design (CAD) model is converted into layers in a process known as the slicing procedure. One of the limitations of AM is the geometrical inaccuracy and undesirable surface finish due to the layer-upon-layer application of the material. Inclined features suffer significantly from this drawback, known as the stair-step effect. While decreasing the layer thickness can reduce the stair-step effect, the cost of considerably increasing processing time is unappealing to manufacturers. This dissertation seeks to develop a new solution to slice tessellated CAD models with dynamic thickness layers. The proposed method negates the stair-step effect and provides smooth bonding between layers. A implementation will be performed on a 5-axis Fused Deposition Modeling platform. Additionally, the effects of process parameters on surface integrity will be studied.