Irradiation Sequence Control for Powder Bed Fusion Fume Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In additive manufacturing, existing methods face challenges in determining optimal irradiation sequences for powder bed fusion processes, leading to inefficiencies in energy beam utilization and material properties due to interactions between energy beams and fumes emitted during the process.
Innovation Solution
The development of systems and methods to predict and avoid fume plumes generated during the additive manufacturing process, allowing for improved energy beam utilization and enhanced material properties by determining irradiation sequences that minimize interactions between energy beams and fumes, thereby optimizing the consolidation of powder material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If energy beams are directed onto powder bed to consolidate sequential layers, then three-dimensional objects are formed, but fumes are generated that interfere with subsequent irradiation
Solution Approach 1:
The system predicts fume plume locations in advance before directing energy beams, and uses this prediction to determine an irradiation sequence that avoids the harmful fumes. The control system proactively plans the irradiation path based on predicted fume generation from previous irradiation, preventing beam-fume interference before it occurs.
Solution Approach 2:
The irradiation sequence is dynamically adjusted based on real-time prediction of fume plume locations. The control system modifies the irradiation path and timing adaptively, changing the sequence in which regions are irradiated to avoid intersecting with predicted fume plumes while maintaining efficient consolidation.
2Loss of energy
If conventional irradiation sequences are used, then manufacturing process is simple, but energy beam utilization is inefficient due to fume interactions
Solution Approach 1:
The system incorporates a feedback loop where the predicted fume plume locations from previous irradiation inform the planning of subsequent irradiation sequences. The control system continuously adjusts the irradiation plan based on this feedback, optimizing energy beam utilization by avoiding regions where fumes would interfere with beam effectiveness.
3Manufacturing precision
If irradiation continues without considering fume plumes, then process control is straightforward, but material properties deteriorate due to beam-fume interactions
Solution Approach 1:
The system performs preliminary prediction of fume plume locations and uses this information to determine an optimized irradiation sequence before actual irradiation occurs. This advance planning ensures that energy beams are directed at regions free from fume interference, maintaining high material property quality throughout the manufacturing process.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach improves productivity and material properties by ensuring better energy beam utilization and reducing the adverse effects of fumes on the additive manufacturing process, resulting in higher quality three-dimensional objects.
Implementation Method 1
one or more energy beams are directed onto a powder bed to consolidate (e.g., melt and/or sinter) sequential layers of powder material
Implementation Method 2
one or more energy beams are directed onto a powder bed to consolidate (e.g., melt and/or sinter) sequential layers of powder material
Implementation Method 3
fumes may be generated that may emanate from a region of the powder bed that has been previously irradiated
Implementation Method 4
fumes may be generated that may emanate from a region of the powder bed
Data Source
AI summary
A method of additively manufacturing a three-dimensional object may be performed using an irradiation sequence that is based at least in part on a predicted location of one or more fume plumes emitted from the powder material when irradiated by a plurality of energy beams. An exemplary method may include determining, with a computing device, an irradiation sequence for selectively consolidating powder material using an energy beam system of an additive manufacturing machine, and providing control commands, from the computing device to the energy beam system, configured to cause the energy beam system to emit a plurality of energy beams to selectively consolidate the powder material.