Coating Sampling Blade and Container for Precise Dry Abrasion
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Solution Overview
Problem
Current methods for sampling surface coatings are not transportable, making it difficult to analyze coatings in situ, and existing sampling techniques fail to precisely remove coatings down to the substrate while minimizing contamination and operator exposure.
Innovation Solution
A method using a modified oscillating saw blade with a curved toothed end and a container with a recess to collect coating particles, allowing for precise abrasion and containment of the sample, enabling qualitative and quantitative analysis of chemical species on coated surfaces without thermochemical deterioration or diluents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional sampling methods (cutter, sanding, coring) are used, then samples can be obtained from coated surfaces, but precise area control, contamination minimization, and operator exposure limitation are not achieved
Solution Approach 1:
The sampling device is segmented into distinct functional components: a container for defining the sampling area, an oscillating saw blade for material removal, and a collection system. This segmentation allows each component to perform its specific function optimally while maintaining overall system precision.
Solution Approach 2:
The container acts as an intermediary element between the oscillating saw blade and the coated surface. It defines the precise sampling area through its base configuration, contains the abrasion process, and collects the sampled material, thereby achieving precise area control while simplifying the overall sampling operation.
2Adaptability or versatility
If transportable analysis tools are used, then in situ analysis is possible, but the tools are not available for many surface coatings
Solution Approach 1:
The sampling device extracts only the necessary coating material from the surface in a controlled manner, separating the sampling function from the analysis function. This allows the use of highly reliable laboratory analysis tools (ICP-MS, SIMS, SEM) on collected samples, achieving both versatility across different coating types and high analysis reliability through specialized equipment.
Solution Approach 2:
The oscillating saw blade parameters (oscillation frequency, amplitude, speed) are optimized to produce fine powder suitable for various analysis techniques. This parameter control ensures the sampled material is in the appropriate form for multiple analysis methods, enhancing adaptability while maintaining reliability.
3Object-affected harmful factors
If dry cold scraping method is used, then thermochemical deterioration is avoided, but dust ejection requires containment
Solution Approach 1:
The oscillating saw blade, which generates dust during abrasion, is used in a contained environment where the dust becomes the desired sample material. The container confines the dust ejection, converting what would be a harmful dispersion into a collected sample for analysis, while the cold dry method avoids thermochemical deterioration.
Solution Approach 2:
The container acts as a flexible boundary that confines the abrasion process and collects dust laterally. Its design allows it to adapt to different surface orientations (vertical, horizontal, inclined) while maintaining containment of the generated dust, preventing harmful ejection while preserving sample integrity.
4Adaptability or versatility
If sampling is performed on vertical surfaces, then diverse surface orientations are covered, but gravity affects dust collection
Solution Approach 1:
The container is designed with three-dimensional geometry that accommodates various surface orientations. By extending the containment structure in multiple spatial dimensions, it effectively collects dust regardless of whether the surface is vertical, horizontal, or inclined, maintaining collection efficiency across different orientations.
Solution Approach 2:
The container geometry is asymmetrically designed to optimize dust collection for different surface orientations. The base configuration and opening orientation can be adapted to match the specific surface being sampled, allowing efficient dust containment whether the surface is vertical, horizontal, or at an angle.
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 method allows for safe, dry, and precise sampling of coatings on any surface orientation, minimizing contamination and exposure, with the collected particles being analyzed for chemical species and quantity per unit area, ensuring accurate characterization of the coating.
Implementation Method 1
pressing the curved toothed end of the abrasion section of the modified blade against the coated surface to abrade the surface
Data Source
Figure 1
Figure 2~3
Figure 4a~4b
AI summary
The invention relates to a method for taking a sample from a coated surface, comprising the following steps: - obtaining an oscillating saw (1), - obtaining a modified oscillating saw blade (2), having a fixing section (3) to the oscillating saw (1) extending into a connecting section (4) making an angle (α) with the plane of the fixing section (3), this connecting section (4) ending in an abrasion section (5) making an angle (180-α) with the plane of the connecting section (4), so as to be parallel to the fixing section (3), and having a toothed end (6) curved away from the plane of the fixing section (3), - obtaining a container (9) having at least a transparent part and an opening (8) whose edge is provided to conform to the shape of the coated surface and has a recess (7) provided for the passage of the abrasion section (5) of the modified blade (2),Taking into account its oscillating movements, - attach the modified blade (2) to the oscillating saw (1), - press the opening of the container (9) against the coated surface, - pass the abrasion section (5) of the modified blade (2) through the recess (7) of the container (9), via its wall, - operate the oscillating saw (2) and - proceed to abrade the surface by pressing the curved toothed end (6) of the abrasion section (5) against the coated surface and monitoring the operation through the transparent part of the container (9). The invention also relates to a modified oscillating saw blade for implementing this method and to a sampling kit.