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Optical Manufacturing Metrology (OMM)5 ECTS (Prüfungsordnungsmodul: International Elective Modules)
Modulverantwortliche/r: Tino Hausotte Lehrende:
Tino Hausotte
Start semester: |
SS 2014 | Duration: |
1 semester | Cycle: |
jährlich (SS) |
Präsenzzeit: |
60 Std. | Eigenstudium: |
90 Std. | Language: |
Englisch |
Lectures:
Inhalt:
- Introduction: manufacturing metrology and main task: fields of industrial metrology, main tasks (control the conformity, readjusting/correcting of process parameters), objectives and aims (ensure the function, interchangeability, correction parameters for manufacturing processes) • measuring, testing, monitoring • equipment in manufacturing metrology • optics (theories: quantum, wave, ray), effects, properties and principles of measurement
Geometrical tolerances: basic (GPS) Framework, duality principle and operations (partition, extraction, filtration, association, collection, construction) • definitions of geometric elements, standard geometrical elements • geometrical parameters of workpieces, classification system for form deviations • linear and angular dimensions (terms and definitions) • ISO-system for tolerances of linear sizes (terms and definitions, types of fits, code system) • symbols and drawing indication of geometrical tolerances • definition of form tolerances • datums • orientation, location and run-out tolerances • several essential specifications for GPS (CT, E, M, F) • surface texture parameters (determination, types)
Measurement and Evaluation Strategies: determination of measurement strategy, probing strategy and evaluation strategy (Minimum and recommended number of probing points, Nyquist‘s Criterion, probing of feature segments, evaluation criteria) • influences on the uncertainty of measurement results (uncertainty of measurement, Golden Rule)
Optical Principles and Components: Theories of optics • Geometrical optics (reflection, refraction, fibre optic components, ray tracing, lenses, aberration, beam splitter, mirrors, prisms, reflectors) • Wave optics (wave equations, polarisation, polarisers, beam-splitting polarisers, coherence and interference, diffraction ) • Quantum optics (spontaneous emission, light-emitting-diodes and detectors, stimulated emission, laser, photoelectric effect and detectors)
Tolerances of optical Components: reference wavelengths • testing areas and volumes • dimensioning of lenses and of edges, dimension and protective chamfers • specification of angle • material specification (stress birefringence, bubbles and other inclusions, inhomogeneities and striae) • surface treatment and coating
Scales and Encoders: Abbe comparator principal (traceability, 1th order and 2nd order error, Abbe comparator) • linear encoder (principle, Moiré-effect and reticle, detection of motion direction) • output signals and demodulation of encoder signals (counting and resolution enhancement) • reading head of encoders (imaging and interferential measuring principle, transmitted and reflected light) • reference marks • absolute encoders (U- and V-scanning and Gray code)
Interferometer for length measurements: interference and interferometer • Michelson-Interferometer • superposition of waves, Basics of the interference, Interference of light waves • homodyne and heterodyne principal • interference at a Michelson-Interferometer • interference of a homodyne interferometer • demodulation at a homodyne interferometer (dead path) • demodulation at a heterodyne Interferometer • refractive index of air (dependency, measurement) • coherence (spatial and temporal, interferograms with two monochromatic light, white light) • He-Ne-Laser (modes and mode distances, stability) • interferometer setups and adjustment
Interferometer for surface measurements: interference of equal inclination • interference of equal thickness • multiple beam interference • demodulation with phase shifting (principle, generation of phase shift, unwrapping) • application of Fizeau Interferometry • interference microscopes (setups, evaluation)
Optical Surface Measurements: microscope designs, measuring microscope • numerical aperture and resolution • focus variation • confocal microscope (principle, setups, laser-scanning microscope) • chromatic white-light sensor • laser autofocus method (characteristic curve, principles with astigmatic lens and Foucault knife) • summary: optical probing
Lernziele und Kompetenzen:
- Motivation for manufacturing metrology
Objectives, tasks and quantities in manufacturing metrology
Inspection equipment in manufacturing metrology
GPS concept and tolerances
Optical metrological methods
Optical measurement procedures and it’s applications
Literatur:
- Yoshizawa, T.: Handbook of optical Metrology: Principles and Applications. Boca Raton, CRC Press, 2009
Gåsvik, K. J.: Optical metrology. New York, Wiley, 2002
Benteley, J. P.: Principles of Measurement Systems. Essex, Prentice Hall, 1995
International Vocabulary of Metrology – Basic and General Concepts and Associated Terms, VIM, 3rd edition, JCGM 200:2008
Organisatorisches:
Weitere Informationen:
Keywords: FMT
www: http://www.fmt.tf.fau.de/lehre/lehrveranstaltungen.php
Verwendbarkeit des Moduls / Einpassung in den Musterstudienplan:
- Maschinenbau (Master of Science): 2. Semester
(Po-Vers. 2013 | Studienrichtung International Production Engineering and Management | Masterprüfung | International Elective Modules)
Dieses Modul ist daneben auch in den Studienfächern "International Production Engineering and Management (Bachelor of Science)" verwendbar. Details
Studien-/Prüfungsleistungen:
Optical Manufacturing Metrology (Prüfungsnummer: 49003)
- Prüfungsleistung, Klausur, Dauer (in Minuten): 90, benotet
- Anteil an der Berechnung der Modulnote: 100.0 %
- weitere Erläuterungen:
Prüfungstermine, eine allgemeine Regel der Prüfungstagvergabe und Termine der Klausureinsicht finden Sie auf StudOn: Prüfungstermine und Termine der Klausureinsicht
- Erstablegung: SS 2014, 1. Wdh.: WS 2014/2015, 2. Wdh.: keine Wiederholung
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