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151-0535-00L 4 Credits MSC D-MAVT
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Optical Methods in Experimental Mechanics

Lecturers & Examiners: Dr. Erwin Hack
VVZ CR n/a

Last Updated: 2026-02-05 15:13:53

Abstract

The lecture introduces a variety of optical methods to assess the mechanical behaviour of a structure, to determine material parameters, and to validate results from FEA. Focus is on image-based techniques for deformation and stress analysis. Applicability and limitations will be thoroughly discussed. The course will be complemented by laboratory demonstrations at Empa with hands-on experience.

Objective

The student understands the working principle and main application field of various optical techniques. He knows how to choose the most adapt technique and to quantify its expected resolution.

Content

1. Imaging methods: introduction 2. Deformation and strain analysis: Digital Image Correlation 3. Deformation and strain analysis: White light moiré methods 4. Deformation and strain analysis: Moiré interferometry 5. Deformation analysis: Speckle pattern interferometry 6. Strain analysis: Speckle shearing interferometry 7. Vibration analysis: Speckle pattern interferometry 8. Transient deformations: high speed systems, pulsed systems 9. Strain and stress analysis: Photoelasticity 10. Strain and stress analysis: Thermoelasticity 11. Validation of FEA and calibration of optical full-field methods 12. Strain and stress analysis: Fibre based methods 13. Outlook: what else can optics do for you 14. Hands-on laboratory: ESPI, TSA, DIC

Resources

Lecture Notes

Short notes will be made available.

Literature

Optical Metrology. Kjell J. G°asvik 2002 John Wiley & Sons, Ltd. ISBN: 0-470-84300-4 G.L.Cloud, Optical Methods of Engineering Analysis, London, Cambridge University Press (1998)

General Information

Language
German
Levels
MSC
Frequency
Yearly recurring

Examination

Type
session examination
Mode
oral 30 minutes

Course Components

Type Title Time & Place Hours
lecture with exercise Optical Methods in Experimental Mechanics
In Absprache mit Studierenden ist Englisch als Lehrsprache möglich.
  • Mon 14:15-17:00 (LFO G 25)
3 h weekly

Offered In