Falk Wittel: Catalogue data in Autumn Semester 2022 |  |
| Name | Dr. Falk Wittel |
| Name variants | Falk K. Wittel |
| Address | Institut für Baustoffe (IfB) ETH Zürich, HIF E 27 Laura-Hezner-Weg 7 8093 Zürich SWITZERLAND |
| Telephone | +41 44 633 28 71 |
| fwittel@ethz.ch | |
| Department | Civil, Environmental and Geomatic Engineering |
| Relationship | Lecturer |
| Number | Title | ECTS | Hours | Lecturers | |||||||||||||||||||||||||||||||||||
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| 101-0615-01L | Materials Lab Exercises  | 4 credits | 4P | R. J. Flatt, U. Angst, I. Burgert, D. Kammer, H. Richner, F. Wittel | |||||||||||||||||||||||||||||||||||
| Abstract | Introduction into the basic and practical knowledge of important building materials and testing methods. | ||||||||||||||||||||||||||||||||||||||
| Learning objective | Introduction into the basic and practical knowledge of important building materials and testing methods. | ||||||||||||||||||||||||||||||||||||||
| Content | o Introduction of material testing equipment, with various examples of experiments on metals (tensile behaviour, hardness, bending and impact loading). o Theoretical background and practical aspects of concrete technology: mixture design, casting and setting; determination of mechanical properties. o Properties of bricks and mortar: individual materials and the composite brickwork. Parameters like strength, Young’s modulus, water absorption and thermal conductivity are determined. o Understanding the characteristic properties of wood: anisotropy, hygroscopic behaviour, shrinkage and swelling, and effect of size on strength. Introduction to test-methods for wood and wood-products. o Introduction into the basics of scanning electron microscopy: practical exercises with the Environmental Scanning Electron Microscope (ESEM). o Introduction to fundamentals of Finite Element Methods and their application in examples. o Introduction to durability of building materials and building structures: assessment of potentials for detecting and locating corrosion of steel reinforcement in concrete. | ||||||||||||||||||||||||||||||||||||||
| Lecture notes | For each topic a script will be provided, that can be downloaded under www.ifb.ethz.ch/education | ||||||||||||||||||||||||||||||||||||||
| 101-0617-02L | Computational Science Investigation for Material Mechanics | 4 credits | 2S | D. Kammer, F. Wittel | |||||||||||||||||||||||||||||||||||
| Abstract | Introduction to computational sciences with focus on numerical modeling of the mechanics of materials. Simulation of material damage, fracture and failure with various material models. | ||||||||||||||||||||||||||||||||||||||
| Learning objective | Learning from mistakes and failures is as old as the engineering discipline. Understanding why things went wrong is essential for improvement, but often impossible without the help of numerical modelling. Real world problems are often highly nonlinear, dependent on multiple physical fields, involve fundamental material behavior far from equilibrium and reversibility, and can often only be understood by addressing different relevant scales. In this course, we will use real-life cases to learn how to deal with such problems. Starting from the problem description with governing equations, you will learn how to tackle non-linear and multi-field problems using numerical simulations. A particular focus will be on fracture. We will investigate the conditions and mechanisms that lead to material failure and analyze the contributions of plastic behavior, size effects, randomness in the underlying material micro-structure, and various other non-linear material behavior. You will learn various approaches to model the mechanics of complex heterogeneous materials and to implement your model in Python code to run numerical simulations. | ||||||||||||||||||||||||||||||||||||||
| Content | 1 Introduction to (numeric) forensic engineering 2 The nature of engineering problems (governing equations) 3 Numerical recipes for dealing with non-linear problems 4 Multi-field problems (HTM) 5 On the nature of failure - Physics of damage and fracture 6 Cracks and growth in structures (LEFM and beyond) 7 Introduction to metal plasticity 8 Damage and fracture in heterogeneous materials 9 Mechanics of fatigue 10 Visco-elastic failure 11 Student μ-Project presentation | ||||||||||||||||||||||||||||||||||||||
| Lecture notes | Will be provided during the lecture via moodle. | ||||||||||||||||||||||||||||||||||||||
| Literature | Will be provided during the lecture. | ||||||||||||||||||||||||||||||||||||||
Competencies |
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