Name
Tech. Session XII - 235
Date & Time
Thursday, June 26, 2025, 2:35 PM - 3:00 PM
Description
The integration of multi-laser additive manufacturing (AM)
revolutionizes the printing process by facilitating
concurrent printing, thereby considerably minimizing
overall production time without sacrificing print quality.
In multi-laser AM, decomposition methods and path planning
strategies significantly influence the temperature
distributions during the printing process. Thermal history
is a critical factor, as it directly impacts the
microstructures and thereby affects the mechanical
properties of the printed component. For example, in
regions such as intersection zones, inappropriate path
planning can reduce the cooling rate of deposited material,
resulting in prolonged elevated temperatures. This, in
turn, can negatively affect tensile and yield strengths.
Despite these known effects, a gap remains in understanding
the combined impact of decomposition and path planning on
thermal distributions in multi-head printing systems.
Addressing this gap is essential for identifying
decomposition and path planning configurations that produce
uniform thermal profiles and ultimately enhanced part
properties.
To bridge this gap, this study introduces a novel framework
leveraging physics-informed neural networks (PINNs) which
is designed to be adaptable to various part shapes and
geometries. The first step in the framework is efficiently
decomposing a desired part using an equal-area constraint
to ensure balanced segmentation. Following this
decomposition, it proceeds to generate path for each of the
subdivided sections for continuous paths solving it as a
traveling salesman problem to enhance overall efficiency
and precision. Laser power and scan speeds are then
assigned for each section, with synchronization achieved by
interpolating laser positions and their associated time
steps. Eventually, a clustering model is developed based on
statistical analyses of decomposed path plans, enabling the
selection of desirable path-planning strategies. The
selection criteria are based on the distance between the
heads during the print. The clustering model's performance
is confirmed by comparison with our novel path-aware PINN
thermal model. The path-aware PINN is specifically designed
to evaluate the thermal history for multi-laser print
trajectories. This is achieved by minimizing the residuals
of the governing partial differential equations and
relevant boundary conditions.
The proposed framework's flexibility in accommodating
different geometries enables it to provide a desired
solution space for decomposition and path planning in
multi-laser printing processes. Furthermore, as the
selection criteria for decomposition and path planning are
integrated and aligned with temperature distributions, this
framework presents a promising approach to enhancing the
mechanical properties of dual-head additive manufacturing.
Location Name
Regency F
Full Address
Hyatt Regency
220 N Main St
Greenville, SC 29601
United States
220 N Main St
Greenville, SC 29601
United States
Session Type
Technical Session
Paper #
NAMRC 235
Author List
Meysam Faegh, Suyog Ghungrad and Azadeh Haghighi
Paper Title
A physics-informed neural network framework for decomposition and path planning in multi-laser additive manufacturing
Presenter Name
Meysam Faegh
Session Chair
Ala Qattawi, Meysam Faegh
Presenter Email
mfaegh2@uic.edu