15640 - Structural Diagnostics

Course Unit Page


This teaching activity contributes to the achievement of the Sustainable Development Goals of the UN 2030 Agenda.

Quality education Industry, innovation and infrastructure

Academic Year 2021/2022

Learning outcomes

The first aim of this course is to present a complete review of the failure mechanisms of materials. A further aim is to introduce the main methods for experimental stress analysis and for non-destructive tests.

Course contents

Experimental stress analysis by strain gauges and photoelasticity.

Low-cycle fatigue: cyclic hardening or softening, the cyclic curve, the hysteresis curve.

Non-destructive test methods: Penetrant liquids, Magnetic particles, Eddy Currents, Ultrasound inspection.

Specific Lab exercitations on: strain gauges, photoelasticity, dye penetrants, magnetic particles, eddy currents and ultrasound inspection.


Handouts by the Professor.

A. Freddi, G. Olmi, L. Cristofolini, Experimental Stress Analysis for Materials and Structures. Stress Analysis Models for Developing Design Methodologies, Cham (ZG), Switzerland, Springer International Publishing, 2015.

Teaching methods

Explanations by notes on a tablet. Practical exercitations and training in the Lab.

Assessment methods

Student assessment is performed by a written test, consisting of four questions. They may have a theoretical or a practical content, with reference to the main Course topics (including lab practical exercitations or practical applications of the studied experimental techniques).

Teaching tools

Slide projector. A tablet used as "virtual blackboard". Copies will be provided (by publication on virtuale.unibo.it) at the end of the lectures.

Lab training on: Strain gauges, Photoelasticity, Non-Destructive Control Techniques.

Office hours

See the website of Giorgio Olmi