Optical Metrology and Testing (AG276)

SynopsisThis is a course of continuing education for mechanical and mechatronics engineers. This course is intended for engineers working in the equipment and tooling industry or division. The course aims to provide the principles and essential guides to accomplishing design and quality controls using non-contact based metrology and testing system.

This course focuses on three essential core subjects, namely 1) optical metrology for measuring physical parameters in machine and tool design; 2) testing techniques for determining the surface quality of optical components and systems; and 3) computer generated holograms and digital image processing in optical testing.

The course instructor will draw on his extensive experience to illustrate the subject matter with practical examples and hands on sessions.

At the completion of the course, students should be able to demonstrate the following:

• understanding of the concept of optical metrology and testing;
• application of interferometric method for measuring distance, angle, surface finish and alignment;
• understanding of the use of optics for non-destructive testing based on interference, holographic and non-interference methods; and
• basic knowledge of using computer generated holograms (CGH) for optical testing.

What You Will Learn

• Concept of metrology and types of metrology
• Surface characteristics and measurement standards
• Metrology of machine tools
• Limits, fits and tolerance in metrology
• Interferometry & holography
• Metrology of surface finish
• Concept and use of optical testing
• Fundamentals of machine vision for quality control
• Digital image processing

Who Should Attend

• Mechanical Design Engineers
• Mechatronics Engineers
• Optical Engineers
• Precision Engineers

PrerequisiteTechnical background or working experience in precision engineering, mechanical, mechatronics, or similar engineering disciplines. Although the participants are not required to have in-depth knowledge of the subject matter, some prior acquaintance with the basic knowledge and/or experience of optics should be helpful.

Course MethodologyThis course is conducted in a seminar room and the hands on sessions are conducted in a lab equipped with optical instruments. Each participant will receive a set of course materials and a CD.

Course Duration3 days, 9am - 5pm.

Course StructureDay 1

• Introduction to metrology
• Measurement standards
• Linear and angular metrology
• Straightness, flatness, squareness, parallelism, roundness and cylindricity measurements
• Metrology of machine tools
  

• Fits and tolerance
• Interferometry and holography
• Metrology of surface finish
• Optical testing
• Practical case of study: Design and construction of interferometers
  

• Introduction to machine vision for quality control
• Digital image processing
• Practical cases of study: (i) Design of a machine vision unit and (ii) Practical work for digital image processing