Graduate School Course Program 2009

Brinell Centre Graduate School Course Programme 2009

The Brinell Centre Graduate School was expanded during 2008 with the help of the Vinnova financed BrinellVinn programme. In addition to the Brinell Centre the following organisations participate in the programme:

· Hero-M, Vinnova Excellence Centre

· The graduate school on metal working, Borlänge,

· Memika (electron microscopi centre at KTH and KIMAB)

· Triple steelix (industrial development centre in Bergslagen)

The following courses will be given during 2009:

Fatigue-phenomena and mechanisms	Prof. Torsten Ericsson, Engineering Materials (IKP), LiTH	feb-09
Materials optimisation in design	Prof. Rolf Sandström, MSE, KTH	mar-09
Seminar course on advanced steels	Prof. John Ågren	nov-09

Registration to all courses is essential. The deadlines are given above. Send the registration by email both to the responsible teacher and to me.

Course participants that are not graduate students will normally have to pay a fee of 6000 SEK for each course.

Rolf Sandström

FATIGUE PHENOMENA AND MECHANISMS

Goals

Participants will gain a deeper understanding about the fatigue phenomenon at ambient and elevated temperatures from a materials point of view. The emphasis is on metals but ceramics and polymers will be treated briefly.

Course content

The first part of the course will be based on the book by S.Suresh, see below. It covers

· Cyclic deformation in single crystals and polycrystals

· Crack initiation in ductile and brittle solids

· Total life approaches (stress and strain based)

· Fatigue crack growth in ductile and brittle solids

· Retardation effects

· Small fatigue crack growth

Since the book was published the development of new knowledge has been very remarkable in two fields:

· Fatigue in the Giga cycle range

· Fatigue at elevated constant (LCF) and cyclic temperature (TMF) of high temperature alloys both without and with corrosion protective coatings and thermal barrier coatings

These parts will be based on journal articles.

Prerequisites

Basic knowledge in physical metallurgy and solid mechanics

Recommended for

PhD students in materials and solid mechanics

Organization

The course will be organized with lectures, home work problems and laboratory excercises: 6 seminar lectures of 3 hours each plus 1 hour home work discussion and 2 laboratory excercises of 3 hours each.

A study visit to an industry actively carrying out fatigue testing will be organized at the end of the course, eg. SAAB at Linköping or SCANIA at Södertälje.

Lecturer

Part one

Professor Torsten Ericsson, Linköping University. Course leader

Part two

Professor Sten Johansson, Linköping University ( LCF and TMF)

Professor Jens Bergström, Karlstad University (Giga cycle fatigue)

Examination

A written exam plus solved home work problems.

Credits

8 p (ECTS)

Literature

Part one

S. Suresh:” Fatigue of Materials” 2nd edition, Cambridge University Press, 1998. ISBN 0 521 57847 7 Paperback

0 521 57046 8 Hardback

Each participant has to order his/her own book.

Part two

Copies of journal articles

Registration

tel. 013-28 11 69, fax 013-28 25 05, email: ingmari.hallkvist@liu.se

Schedule
Thursday, Feb. 5 LiU	Introduction. Cyclic deformation.
Thursday, Feb. 12	Crack initiation. Total life approaches.
Thursday, Feb. 19 KTH	Fatigue crack growth. Fracture mechanics aspects.
Thursday, Feb. 26	Retardation effects and residual stress effects.
Thursday, Mar 5	Small fatigue crack growth
Thursday, Mar 12 LiU	LCF and TMF + Laboratory exercise 1
Thursday, Mar 19 KaU	Giga cycle fatigue + Laboratory exercise 2

Course meetings 1-5 will start at 10.30 and finish at 15.00 with a lunch break. The meetings will take place at LiU and KTH, so that traveling is minimized. Course meetings 6 and 7 will start earlier in the morning and finish later to make room for laboratory work.

LiU Linköping University

KaU Karlstad university

KTH Royal Institute of Technology, Stockholm

Course start: Thursday February 5, 10.30 am at Engineering Materials lab, Linköping University

MATERIALS OPTIMISATION IN DESIGN

(6 ECTS)

Background

Mathematical optimisation is used for many types of problems in production planning, transport, design of telecom nets, road infrastructure, mechanical design, scheduling of air traffic, finance mathematics, etc. A range of powerful tools has been developed for these applications. These tools are also of interest to apply in materials science and engineering. The first part of this course gives an introduction to general optimisation procedures. In the second part these tools are applied to a range of material problems.

A critical part of materials optimisation is to determine composition-microstructure –property relations (CMPR). The composition and processing of a material controls the microstructure, which in turn controls the property values. So if you want to find out the influence of the composition and processing on properties, the CMPR are needed. Two ways of determining the CMPR will be covered. The first utilises analysis of existing data, and the second one is based on fundamental thermodynamic and dislocation modelling. Modelling at different length scales is essential to cover in this respect.

In addition to the detailed knowledge about materials optimisation that is provided, the student will acquire excellent experience during computer exercises in Maple and Matlab that are de facto standards for advanced computation.

Teachers

Responsible teacher	Professor Rolf Sandström, tel 790 8321, email rsand@kth.se
Responsible for exercises	Hans Magnusson, tel 790 9193, email: hansm@mse.kth.se

Course literature:

Materials optimisation; Compendium, Lecture notes

Lectures, presentation of home work, part 1

Date	Topic
Tuesday 17/3 9-11	Introduction to mathematical optimisation. Target functions. Constraints. Linear programming. The simplex method. Dual systems.
Friday 20/3 9-11	Quadratic programming. Curve fitting. Least squares method. Chebyshev method
Tuesday 24/3 9-12	Non-linear optimisation. Unconstrained minimisation. Lagrange. Newton methods. Line search.
Friday 27/3 9-12	Constrained minimisation. Frank-Wolfe method. Penalty functions

Lectures, presentation of home work, part 2

Date	Topic
Wednesday 1/4 14-17	Phase equilibria. Alloys based on elements in solid solution
Friday 3/4 9-12	Composition-microstructure-property relations. Particle strengthened alloys
Friday 17/4 9-12	Material selection and alloy optimisation I
Friday 24/4 9-12	Material selection and alloy optimisation II
Tuesday 28/4 9-12	Minimisation of environmental impact
Tuesday 5/5 9-12	Design optimisation I
Friday 8/5 9-12	Design optimisation II
Tuesday 12/5 9-12	Design optimisation III
Friday 15/5 9-12	Reserve

Rome: Lectures are given in the conference room 408, Brinellv. 23, 4 tr.

Home work

At the lectures, homework will be distributed. The results should be presented at the next lecture.

Computer exercises (M122)

Date	Topic
Friday 20/3 13-16	Handling of matrices in Matlab (tutorial)
Thursday 26/3 9-12	Tutorial with Maple
Friday 27/3 13-16	Linear programming with Maple
Thursday 2/4 9-12	Curve fitting
Friday 3/4 13-16	Non-linear programming
Thursday 16/4 9-12	Thermo-Calc
Friday 17/4 13-16	Aluselect, Optimisation of aluminium alloys
Friday 24/4 13-16	Optimisation of stainless steels
Thursday 30/4 9-12	Minimisation of environmental impact
Thursday 7/5 9-12	Design optimisation I
Friday 8/5 13-16	Design optimisation II
Thursday 14/5 9-12	Reserve

Examination

Properly carried out homework and presentations as well as computer exercises are the requirements for the fulfilment of the course.

Registration

Please, register to the course by sending an email to rsandkth.se

SEMINAR COURSE ON ADVANCED STEELS

(6 credits)

Responsible teachers: prof. John Ågren (email: john@kth.se) and ass prof. Annika Borgenstam (email: annika@mse.kth.se).

The course will start during the week Nov 9-13, 2009. Each student has to sign up to professor John Ågren before Nov 13, 2009 by sending an email. In that email one of the below subjects has to be chosen. The subjects will be given on a “first come, first served“ basis. If a subject has already been taken another subject will be given.

Each student shall study the chosen subject and prepare written material, e.g. text book chapters, scientific papers etc and his/her own lecture notes to be handed out to the rest of the group. Ågren and Borgenstam will give advice during the preparation of the material.

Each participant shall give a 35 minutes lecture on the chosen topic (+10 min discussion) on a full day seminar Dec 14 2009.

Aim

The aim of the course is to give student an overview over the subject. New concepts and trends in steel science will be discussed. To some extent the contents of the course may be modified in accordance with the interest of the participants. The course will cover scientific and engineering aspects as well as commercial and entrepreneurial aspects.

Content

Each participant gives a 35 minutes lecture on a given topic (+10 min discussion). Written material, lecture notes, papers etc are handed out to the rest of the group. All participants are required to follow all lectures.

Suggested topics:

1. The trip and twip effects for a new generation of high strength steels.

2. How to improve the properties of maraging steels

3. Wear and friction in tool steels

4. Welding of duplex stainless steels

5. Deformation inducedt martensite in austenitic stainless steels

6. How to improve the oxidation resistance of 9-12% kromstål

7. Z phase formation in 9-12% Cr steels

8. Sigma-fasbildning i Ni-baslegeringar

9. Dual-phase steels

10. Nitriding of high-speed steels

11. Inductionhardening and fatigue

12. Physical and chemical basis for flash hardening

13. Physical and chemical basis for case hardening

Literature

Materials handed out

G. Krauss: Steels – processing, structure and performance

Examination

Each student gives a seminar and is active on the other seminars.

Information about the course program will automatically be sent to all staff and students within the Brinell Centre. Other persons interested in obtaining this material should contact the secretary of the Brinell Centre: Dennis Andersson, Phone: 08-790 8320, Fax: 08-20 31 07, E-mail: dennis@kth.se

For general information: Contact Prof. Rolf Sandström, director of the Brinell Centre, Department of Materials Science and Engineering, KTH, Phone: 08-790 83 21, Fax: 08-20 31 07, E-mail: rsand@kth.se

Dennis Andersson 100127