Computational minimization of over-deposition at corners of trajectories in Laser Metal Deposition

Data: 01.08.2021

Manufacturing Letters


Abstract

Avoidance of over-deposition at trajectory corners is relevant in Laser Metal Deposition (LMD) for Additive Manufacturing. Currently available LMD hardware only allows constant material feed (g/s). Therefore, gliding speed of the material dispenser is the remaining tuning variable for controlling metal over-deposition at corners. Existing literature reports trial–error physical experiments, addressing only particular corner angles. In response, this manuscript reports the implementation of a voxel-based simulator of the bead geometry, taking into consideration bead profile, dispenser velocity, material feed, and bead curve geometry. We use it to evaluate two constant-feed tailored-velocity strategies for minimizing material over-deposition at corners.

BIB_text

@Article {
title = {Computational minimization of over-deposition at corners of trajectories in Laser Metal Deposition},
journal = {Manufacturing Letters},
pages = {29-33},
volume = {29},
keywds = {
Additive manufacturing, Laser cladding, Optimization
}
abstract = {

Avoidance of over-deposition at trajectory corners is relevant in Laser Metal Deposition (LMD) for Additive Manufacturing. Currently available LMD hardware only allows constant material feed (g/s). Therefore, gliding speed of the material dispenser is the remaining tuning variable for controlling metal over-deposition at corners. Existing literature reports trial–error physical experiments, addressing only particular corner angles. In response, this manuscript reports the implementation of a voxel-based simulator of the bead geometry, taking into consideration bead profile, dispenser velocity, material feed, and bead curve geometry. We use it to evaluate two constant-feed tailored-velocity strategies for minimizing material over-deposition at corners.


}
doi = {10.1016/j.mfglet.2021.05.001},
date = {2021-08-01},
}
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