Laminate Layup Markers for Real-Time Error Detection
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Solution Overview
Problem
The fabrication of multi-layer laminate structures is complex and prone to errors, such as foreign objects being embedded, incorrect ply orientation, and surface defects, which are often undetectable until post-fabrication, making the process expensive and time-consuming.
Innovation Solution
A system and method that uses markers coupled to each layer, including a radio-contrast agent for visibility during non-destructive inspection, and a scanning system with a coordinate measuring machine arm to analyze each layer for contamination, surface quality, and material pedigree, providing real-time feedback for accurate layup positioning and material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual layup process is used with single technician, then device complexity is reduced, but manufacturing precision deteriorates due to undetectable errors
Solution Approach 1:
Markers are introduced as intermediary objects attached to each ply layer. These markers serve as mediators between the physical layup process and the inspection system, enabling automated detection of ply orientation, sequencing errors, and foreign objects without requiring complex real-time monitoring of the entire fabrication process
Solution Approach 2:
Markers are attached to ply layers in advance during the layup process. This preliminary action allows the inspection system to detect errors after fabrication but before final assembly, enabling correction of issues like foreign objects and orientation errors without requiring complex real-time monitoring during fabrication
2Manufacturing precision
If multiple intermediate steps are performed manually, then manufacturing precision can be maintained, but productivity deteriorates
Solution Approach 1:
The inspection system provides automated feedback by imaging markers after fabrication and analyzing them for errors. This feedback mechanism enables rapid detection of multiple types of errors (foreign objects, orientation errors, sequencing errors) that would otherwise require time-consuming manual inspection, thereby improving productivity while maintaining precision
3Weight of moving object
If non-metallic reinforcement material is used, then weight is reduced, but reliability deteriorates due to limited usable lifetime
Solution Approach 1:
Markers are attached to ply layers in advance, and the inspection system detects errors before final assembly. This preliminary detection and correction of defects (foreign objects, orientation errors, sequencing errors) improves the reliability of the laminate structure, compensating for the inherently limited lifetime of non-metallic reinforcement materials like carbon fiber
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
The system simplifies the layup process by detecting and correcting errors in real-time, reducing fabrication errors and enabling detailed post-fabrication inspection of laminate structures, thereby improving efficiency and reducing costs.
Implementation Method 1
The markers are fabricated from a radio-contrast agent and the markers are visible in the image
Data Source
AI summary
A system for use in fabricating a laminate structure from a plurality of layers of material is provided. The system includes a marker coupled to at least two of the plurality of layers, and a positioning system configured to arrange the plurality of layers in a predetermined layup position based on a position of the markers.