Fringe Projection Profilometry in Production Metrology: A Multi-Scale Comparison in Sheet-Bulk Metal Forming.

Area of Science:

• Optical Metrology
• Production Engineering

Background:

• Fringe projection profilometry is a non-contact 3D scanning technique widely used in production metrology.
• Its scalability and speed make it suitable for complex geometries and modern manufacturing processes like sheet-bulk metal forming.
• Current industrial standards for sensor performance evaluation are often global and lack application-specific guidance on positioning and local characteristics.

Purpose of the Study:

• To compare fringe projection systems across various scale ranges.
• To provide insights for appropriate 3D scanner selection and data evaluation for specific applications.
• To address the limitations of global performance evaluation by considering local characteristics within the measuring volume.

Main Methods:

• Comparison of fringe projection systems across different scale ranges.
• Positioning and scanning of a calibrated sphere using a high-resolution grid.
• Analysis of measurement volume and relative uncertainty concerning specimen and scanner position.

Main Results:

• The study provides a comparative analysis of fringe projection systems.
• It highlights the importance of understanding measurement volume and relative uncertainty for scanner positioning.
• The findings offer a basis for developing adapted measurement strategies and integrated production concepts.

Conclusions:

• Accurate knowledge of measurement volume and uncertainty is crucial for effective 3D scanner application.
• This research facilitates the development of application-specific measurement strategies in production metrology.
• The findings contribute to improving the utilization and reliability of fringe projection profilometry in diverse industrial settings.