Multi-Source Overlap Qualification for 3D Print Defect Control
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Solution Overview
Problem
Multi-source additive manufacturing systems face challenges in understanding and addressing defects in overlap regions, leading to increased complexity and potential failures in fabricating devices with internal channels, lattice structures, and tight tolerance requirements, due to misalignment and varying capabilities of overlapping sources.
Innovation Solution
The development of multi-source overlap design acceptance qualification (MSODAQ) parts allows for calibration and validation of multi-source systems by fabricating test features in both overlapping and non-overlapping regions, enabling engineers to control the fabrication process and reduce defects by identifying the capabilities of each source within the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple sources are used to increase productivity, then fabrication speed increases, but defects in overlap regions increase due to misalignment and varying capabilities
Solution Approach 1:
The patent applies preliminary action by fabricating test features in overlap regions before production parts. This allows the system to identify and characterize defects in overlap regions ahead of time, enabling process optimization and source calibration before actual manufacturing, thereby reducing defects while maintaining multi-source productivity
Solution Approach 2:
The patent implements feedback by using test features to evaluate and compare the performance of different sources and their overlap regions. The results from test features provide feedback on source alignment and capability variations, enabling adjustments to source parameters and positioning to minimize defects in production
2Measurement precision
If test features are added to qualify overlap regions, then understanding of source capabilities improves, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the build platform into distinct regions (first region, second region, and overlapping third region) with different test features in each. This segmentation allows systematic evaluation of non-overlap and overlap regions separately, providing comprehensive source capability characterization while organizing complexity into manageable segments
Solution Approach 2:
The patent implements universality by designing test features that serve multiple functions: they qualify overlap regions, characterize source capabilities, and validate fabrication processes. The same test feature structure is used across different regions and with different sources, reducing overall system complexity through standardized multi-functional elements
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 helps increase the quantity and quality of fabricated devices, reduces costs, and ensures that devices are fabricated with consistent features across regions, minimizing defects and failures by providing a method to understand and manage the behavior of overlapping sources.
Implementation Method 1
multiple sources configured to build the successive layers of material in the first, second, and third regions of the build platform
Data Source
AI summary
A method includes controlling an additive manufacturing system to fabricate a 3D structure using successive layers of material. The additive manufacturing system includes a build platform having a first region, second region, and overlapping third region between the first and second regions; and multiple sources configured to build (e.g., deposit, bond, melt, solidify) the successive layers of material in the regions of the build platform. Controlling the additive manufacturing system includes controlling the additive manufacturing system to build first, second, and third portions of the 3D structure within the regions of the build platform. Each portion of the 3D structure includes (i) one or more test features that are common to the portions of the 3D structure and (ii) a substrate onto or into which the one or more common test features are formed.