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Scheda Riassuntiva
Anno Accademico 2018/2019
Scuola Scuola di Ingegneria Industriale e dell'Informazione
Insegnamento 096246 - MECHANICAL BEHAVIOUR AND FAILURE OF METALS
  • 096245 - FAILURE AND CONTROL OF METALS
Docente Vedani Maurizio
Cfu 5.00 Tipo insegnamento Modulo Di Corso Strutturato

Corso di Studi Codice Piano di Studio preventivamente approvato Da (compreso) A (escluso) Insegnamento
Ing Ind - Inf (Mag.)(ord. 270) - BV (478) NUCLEAR ENGINEERING - INGEGNERIA NUCLEARE*AZZZZ091729 - FAILURE AND CONTROL OF METALS
096246 - MECHANICAL BEHAVIOUR AND FAILURE OF METALS
Ing Ind - Inf (Mag.)(ord. 270) - MI (491) MATERIALS ENGINEERING AND NANOTECHNOLOGY - INGEGNERIA DEI MATERIALI E DELLE NANOTECNOLOGIE*AZZZZ096246 - MECHANICAL BEHAVIOUR AND FAILURE OF METALS

Obiettivi dell'insegnamento

The course is aimed at developing a full understanding on the main failure mechanisms encountered in metals and on the environmental and loading conditions that can induce anticipated failure of structural parts. 

Methods for the nondestructive measurement of the integrity of materials will also be covered in the second part of the course to give a comprehensive frame of information about the testing of metal structures against unexpected failures in service.


Risultati di apprendimento attesi

After attending the course and final examination, the students will:

a) know the fundamental mechanisms of failure of metals under different service conditions; 

b) know the different methods to perform non-destructive tests on structural parts;

c) be able to apply the above knowledge for the evaluation of expected damage to be found in structural metallic parts as a function of manufacturing routes and service conditions;

d) be able to select the best method (or combination of methods) for the non-destructive detection of defects in structural parts. 

 


Argomenti trattati

The topics covered during the course are:

1) Failure mechanisms in metals: Principles of linear elastic fracture mechanics / Ductile fracture mechanism (microvoid formation) / Brittle fracture by cleavage and intergranular mechanisms / Strain and damage by fatigue / Strain and damage by creep.

2) Embrittlement mechanisms: Hydrogen embrittement / Liquid metal embrittlement (LME) / Loss of ductility at high temperature in steels / Temper embrittlement.

3) Residual stresses in metals: Micro and macro stress fields / Measurement of residual stresses / X-ray diffraction / Hole-drilling strain-gage method / other mechanical methods / Failures and distortion due to residual stresses.

4) Defects in metals related to manufacturing: Casting / Welding / Hot deformation / Cold forming / Thermal treatments and coatings.

5) Non destructive testing: X-ray radioscopy / Penetrants liquid testing / Ultrasound testing / Eddy current testing / Magnetoscopic testing.

 

 


Prerequisiti

A good background on physical metallurgy is required. Background in manufacturing processes of metals and in solid mechanics are are preferable.


Modalità di valutazione

the integrated course of "Mechanical Behaviour and Failure of Metals" is made up of the two modules of "Mechanical Behaviour of Metals" and of "Failure and control of Metals".

The exam of the module "Failure and control of Metals" consists of a written test only. Due to large number of students attending the course and the need to provide a fairly rapid evaluation of the tests, there will be a first part of the test consisting in a set of multiple-choice questions. Only those students scoring more than 18/30 in the first part will be evaluated for the second part of the test.

The second part will consist in a short number of open questions (typically 3 or 4 questions) where the student will be asked to summarized the main concepts learnt about selected general topics.

The proposed mark of the module will be the weighted average of the evaluation of part I and part II, namely: (PI + 2*PII)/3. The final mark of the integrated course will be registered as the average of the two modules once both are passed. The evaluation of each single module will expire at end of the exam sessions of the running academic year.

 


Bibliografia
Risorsa bibliografica facoltativaC.R. Brooks, A. Choudhury, Failure analysis of engineering materials, Editore: Mc Graw-Hill publisher, Anno edizione: 2002
Risorsa bibliografica facoltativaR.W. Cahn, P. Haasen, E.J. Kramer, Materials science and technology, Vol. 6 Plastic deformation and fracture of metals, Editore: VCH Weinheim publisher, Anno edizione: 1993
Risorsa bibliografica facoltativaR-W. Hertzberg, Deformation and fracture mechanics of engineering materials, Editore: Wiley publisher, Anno edizione: 1989
Risorsa bibliografica facoltativaM.A. Meyers, R.W. Armstrong, H.O.K. Kirchner, Mechanics and Materials - Fundamentals and linkages, Editore: Wiley-Interscience publisher, Anno edizione: 1999
Risorsa bibliografica facoltativaR.W. Messler, Principles of welding - Processes, physics, chemistry and metallurgy, Editore: Wiley-Interscience publisher, Anno edizione: 1999
Risorsa bibliografica facoltativaJ. Campbell, Casting - second Edition, Editore: Butterworth Heinemann publisher, Anno edizione: 1991

Forme didattiche
Tipo Forma Didattica Ore di attività svolte in aula
(hh:mm)
Ore di studio autonome
(hh:mm)
Lezione
35:00
52:30
Esercitazione
15:00
22:30
Laboratorio Informatico
0:00
0:00
Laboratorio Sperimentale
0:00
0:00
Laboratorio Di Progetto
0:00
0:00
Totale 50:00 75:00

Informazioni in lingua inglese a supporto dell'internazionalizzazione
Insegnamento erogato in lingua Inglese
Disponibilità di materiale didattico/slides in lingua inglese
Disponibilità di libri di testo/bibliografia in lingua inglese
Possibilità di sostenere l'esame in lingua inglese
Disponibilità di supporto didattico in lingua inglese
schedaincarico v. 1.6.5 / 1.6.5
Area Servizi ICT
25/02/2021