Thermoplastic Welded Joint Characterization with Fluorescent Visualization
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Solution Overview
Problem
Conventional welding of thermoplastic components and composites lacks effective visualization of welded interconnection areas, hindering process optimization and quality inspection.
Innovation Solution
Incorporation of visualization agents, such as fluorescent agents, into the thermoplastic components to enhance the visibility of welded boundaries, allowing for qualitative and quantitative assessment of the interconnection areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If welding-based joining is used to join thermoplastic components, then joining efficiency and structural optimization are improved, but visualization of welded interconnection areas deteriorates
Solution Approach 1:
The patent applies color changes by incorporating visualization agents (pigments or fluorescent agents) into the thermoplastic components. These agents cause the components to exhibit different colors or fluorescent properties that become visible at the welded interconnection areas, enabling clear visualization of the weld quality and interconnection characteristics without compromising the welding process efficiency
Solution Approach 2:
The patent uses visualization agents as intermediaries between the welded joint structure and the observer/detection system. These agents act as mediators that translate the physical interconnection characteristics into visible optical signals, allowing indirect observation of the welded areas while maintaining the integrity of the welding process
2Productivity
If conventional welding process is used, then manufacturing speed is improved, but measurement precision of welded interconnection areas deteriorates
Solution Approach 1:
By incorporating visualization agents that produce distinct color or fluorescent differences, the patent enables precise visual differentiation of welded interconnection areas. This allows for accurate qualitative and quantitative assessment of weld quality, penetration depth, and interconnection characteristics while maintaining conventional welding manufacturing speeds
Solution Approach 2:
The patent replaces complex mechanical or destructive measurement methods with optical detection methods. Instead of using mechanical probes or sectioning to assess welded areas, the visualization agents enable non-contact optical inspection, achieving high measurement precision without slowing down 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
Enables clear visualization and analysis of welded joints, facilitating process optimization, risk identification, and mechanical characterization, thereby accelerating product development and reducing design conservatism.
Implementation Method 1
Incorporation of visualization agents, such as fluorescent agents, into the thermoplastic components to enhance the visibility of welded boundaries
Data Source
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AI summary
A thermoplastic component assembly (10) comprises first and second thermoplastic components (12, 14) which are welded together, the first thermoplastic component (12) comprising a visualisation agent (18) configured to operate as visual contrast under lighting conditions to identify a boundary or interface (16) between the first and second thermoplastic components. The visualisation agent (18) may be a pigment and/or fluorescent, and may provide a bright reflection under ultraviolet light. The thermoplastic components may be multilayered fibre-reinforced composites. An associated method relates to visualisation of the welded components (12, 14) under a light source. Preferably, part of the assembly is cut away beforehand to expose a surface facilitating observation.