Evaluate issues before they are seen – with topographic surface analysis in each step
The final paint is built of many layers- as each layer is applied it tends to smooth the material. Measuring the surface at each stage gives opportunities to optimize the overall paint process and understand factors that most influence the final appearance.
To evaluate the suitability of raw materials, to optimize individual processes and to build a complete picture of how the quality of the final product is influenced at each paint stage, analytical data is needed to understand how each paint process fills, smooths and masks the underlying roughness from the base material.
Widely used laboratory devices producing 3D topographical maps with a sub-micron accuracy and resolution can only be used off-line, and measurement time is also a limiting factor as capturing a representative area on a surface may take many minutes or even hours. The high costs of the equipment and complexity of use usually limit deployment of analytical tools to central development functions in the OEM.
The image-acquiring Rhopoint TAMS™ utilizes Phase Measurement Deflectometry (PMD) as one of its measurement technologies and provides ISO 16610 compliant high-resolution 3D altitude maps of raw materials and all surfaces in the painting process in less than five seconds.
Measurements are taken according to DIN EN ISO 4287 (like optical Ra), or DIN EN ISO 25178 for areal topographic information (like Sa), but all topographic information may be exported in open *.res format for deeper analysis with commercial topographical analysis software. Of course, all measurements are also compatible with Rhopoint’s own free image analysis software “Optimap Reader”, so that profiles as well as altitude maps can be visualized.