CONTROLLI NON DISTRUTTIVI SU ELEMENTI MECCANICI
Academic Year 2024/2025 - Teacher: Fabio Raffaele Emilio An LO SAVIOExpected Learning Outcomes
The course aims to provide the basic knowledge of non-destructive tests
to be carried out on mechanical devices or individual parts of them in
the construction or operating phase. The presence of discontinuities and
defects generated during the foundry, casting, welding processes or
during the useful life of the mechanical elements will be analyzed. The
student engineer will be instructed on the most significant aspects of
non-destructive testing methods ranging from visual inspection to the
most refined radioscopic methods. The course also includes laboratory
exercises with examples of the use of some of the most common methods.
Course Structure
The initial phase of the course includes an introduction to defects generated during the processes of furnace processing, casting, cold or hot plastic working of metal elements. The defects produced during the application of various welding methods, during mechanical processing or during the useful life of mechanical elements will also be analyzed. The main test methods for identifying the described defects without causing the element under examination to break will then be analyzed. During the course, classroom or laboratory exercises will be carried out.
Required Prerequisites
No prerequisites are required.
Attendance of Lessons
Attendance at lectures and exercises must be no less than 70% of the total, as required by the University regulations.
Detailed Course Content
Description of the defects generated during the processing techniques in
the furnace, casting, cold or hot plastic processing of metal elements.
Description of defects produced during various welding methods, during
mechanical processing or during the operation of mechanical elements.
Analysis of the following non-destructive test methods for defect
detection: Visual investigation, Penetrant liquids, Magnetoscopy,
Acoustic emission, Thermography, Eddy currents, Radiography, Ultrasound
and Leak detection.
Textbook Information
- C. Hellier, Handbook of Nondestructive Evaluation, 3rd Ed. McGraw-Hill Education.
- Lecture notes and slides by the teacher.
Learning Assessment
Learning Assessment Procedures
The evaluation during the oral exam will be based on: knowledge of the topics covered, the relevance of the answers to the questions asked, the use of technical language, the ability to make connections between the contents of the program.
Examples of frequently asked questions and / or exercises
- The candidate describes the modes of propagation of the ultrasonic sound wave.
- The candidate describes the concept of Inductive Reactance in the Eddy Current method.
- The candidate describes the Ketos Ring and how it is applied in a test with magnetic particles.
- The candidate explains the two important reasons why matt black paint is used in Thermography.