Daniel Spescha: Catalogue data in Autumn Semester 2022 |
| Name | Mr Daniel Spescha |
| Address | Inst. f. Werkzeugmaschinen ETH Zürich, PFA E 82 Technoparkstrasse 1 8005 Zürich SWITZERLAND |
| Telephone | +41 44 633 08 02 |
| spescha@inspire.ethz.ch | |
| Department | Mechanical and Process Engineering |
| Relationship | Lecturer |
| Number | Title | ECTS | Hours | Lecturers | |
|---|---|---|---|---|---|
| 151-0015-10L | Engineering Tool: Experimental Modal Analysis  All Engineering Tools courses are for MAVT Bachelor’s degree students only. Number of participants limited to 16. | 0.4 credits | 1K | D. Spescha | |
| Abstract | Measuring and analysis methods for the determination of transfer functions of mechanical structures. Evaluation and preparation of the measured data for visualisation and interpretation of the dynamic behaviour. | ||||
| Objective | Introduction into the practical application of measuring and analysis methods for determination of transfer functions of mechanical structures. Evaluation and preparation of the measured data for visualisation and interpretation of the dynamic behaviour. | ||||
| Content | Handling of accelerometers and force transducers, measurement of transfer functions of mechanical structures, determination and visualisation of vibration modes using practical examples, introduction to vibration theory and its fundamental terms. | ||||
| Lecture notes | German documents are provided during the course. | ||||
| Prerequisites / Notice | In the practical part of the course, the participants will carry out measurements on structures themselves and then analyse them with respect to natural frequencies and vibration modes. | ||||
| 151-0719-00L | Quality of Machine Tools - Dynamics and Metrology at Micro and Submicro Level | 4 credits | 2V + 1U | A. Günther, D. Spescha | |
| Abstract | The course "Machine tool metrolgy" deals with the principal design of machine tools, their spindles and linear axes, with possible geometric, kinematic, thermal and dynamic errrors of machine tools and testing these errors, with the influence of errors on the workpiece (error budgeting), with testing of drives and numerical control, as well as with checking the machine tool capability. | ||||
| Objective | Knowledge of - principal design of machine tools - errors of linear and rotational axes and of machine tools, - influence of errors on the workpiece (error budgeting) - dynamics of mechanical systems - measurement data acquisition / digital signal analysis - experimental modal analysis - geometric, kinematic, thermal, dynamic testing of machine tools - test uncertainty - machine tool capability | ||||
| Content | Metrology for production, machine tool metrology - basics, like principal machine tool design and machine tool coordinate system - principal design and errors of linear and rotaional axes - error budgeting, influence of machine errors on the workpiece - geometric and kinematic testing of machine tools - reversal measurement techniques, multi-dimensional machine tool metrology - thermal influences on machine tools and testing these influences - test uncertainty, simulation - basic concepts of dynamics of mechanical systems and vibration theory - sensors and excitation systems - mode fitting, experimental modal analysis - testing of drives and numerical control - machine tool capability | ||||
| Lecture notes | Documents are provided during the course. English handouts available on request. | ||||
| Prerequisites / Notice | Exercises in the laboratories and with the machine tools of the institute for machine tools and manufacturing (IWF) provide the practical background for this course. | ||||