The objectives of the course “Materials technologies for aeronautical engineering” can be summarized as follows:
1. To provide students with the know-how for the correct and timely selection of materials for the most relevant aeronautical application, even by the use of recently developed software;
2. To provide students with the basic knowledge on structural materials for aeronautics and aerospace, including polymer matrix composites, light alloys, super-alloys for high-temperature applications, advanced ceramics and coatings ()structure-property-process correlations and applications for components in aircrafts);
3. To provide students with the fundamentals of corrosion and wear, with specific reference to the main advanced engineering aspects of such degradation phenomena;
4. To provide students with the most important concepts of surface engineering and the applications to aeronautical and aerospace engineering;
5. To provide students with the fundamental aspects of advanced microstructural characterization of materials for aeronautics and aerospace, including optical and electron microscopy, focused ion beam microscopy);
6. To provide students with the main know-how on micro- and nano-mechanical characterization of materials for aeronautics (including micro-and nano-indentation and atomic force microscopy).
Students will acquire required knowledge and expertise for (1) the proper selection of suitable materials on the basis of design specifications, (2) understanding the main processes and heat treatments required for microstructural control of advanced materials for aeronautics and aerospace, (3) understanding the corrosion and wear mechanisms in aerospace materials, (4) understanding the main applications and concepts of recent surface engineering and coating technologies.
1. To provide students with the know-how for the correct and timely selection of materials for the most relevant aeronautical application, even by the use of recently developed software;
2. To provide students with the basic knowledge on structural materials for aeronautics and aerospace, including polymer matrix composites, light alloys, super-alloys for high-temperature applications, advanced ceramics and coatings ()structure-property-process correlations and applications for components in aircrafts);
3. To provide students with the fundamentals of corrosion and wear, with specific reference to the main advanced engineering aspects of such degradation phenomena;
4. To provide students with the most important concepts of surface engineering and the applications to aeronautical and aerospace engineering;
5. To provide students with the fundamental aspects of advanced microstructural characterization of materials for aeronautics and aerospace, including optical and electron microscopy, focused ion beam microscopy);
6. To provide students with the main know-how on micro- and nano-mechanical characterization of materials for aeronautics (including micro-and nano-indentation and atomic force microscopy).
Students will acquire required knowledge and expertise for (1) the proper selection of suitable materials on the basis of design specifications, (2) understanding the main processes and heat treatments required for microstructural control of advanced materials for aeronautics and aerospace, (3) understanding the corrosion and wear mechanisms in aerospace materials, (4) understanding the main applications and concepts of recent surface engineering and coating technologies.
teacher profile teaching materials
The outline of the course of structured as follows:
• Understanding material characterization methods
- X-ray diffraction, electron microscopy (SEM-TEM) and Energy Dispersive Spectroscopy (EDS), micro- and nano-mechanical testing techniques. Notes on metallography and non-destructive testing.
• Wet Corrosion
- Electrochemical aspects of degradation, wet corrosion, Pourbaix diagrams, corrosion kinetics, ddp and mixed potential theory - passive, corrosion in natural environments and hostile environments, prevention, protection, diagnosis and monitoring methods
• Tribology
- -Contact mechanics. Tribological aspects of degradation (adhesion, friction and wear), main types of wear (adhesive and abrasive).
- Theory, methods and standards for quantifying wear, protection strategies.
- Protection of materials
• wear-resistant and corrosion-resistant coatings, thermal barrier coatings (TBCs).
- Deposition technologies: galvanic coatings, Physical Vapor Deposition (PVD) and Chemical Vapor Deposition coatings, thermal spray.
• Composite materials
- basic concepts (matrix-reinforcement-interface) and classification; rule of mixture, matrix reinforcement, durability and degradation (creep, fatigue, hydrolysis). Design criteria: laminated and sandwich composite structures; Production technologies: hand layup, Filament winding, hot stamping, vacuum bag, Resin Transfer Molding, Spray-up. Examples of applications of composites.
• Advanced ceramics
- correlation between precursors, production, structure and properties of ceramics. Reliability criteria (Weibull statistics); Production technologies: sintering, hot isostatic pressing, slip casting, tape casting, co-deposition, thermal spraying. Examples of application of ceramics for refractory components and thermal barrier coatings. Wear and corrosion.
• Material Selection Processes:
- Materials Selection Processes using CES (Cambridge Engineering Selector) software: basic concepts, performance indices and their graphical representation, material selection problems in a number of relevant examples for mechanical and aeronautical engineering.
Course management: https://moodle1.ing.uniroma3.it/
Slides and course notes: https://moodle1.ing.uniroma3.it/
Online notes, www.stm.uniroma3.it
Programme
The materials technologies for aeronautics course is fully aligned with the main themes of the Italian SSD ING-IND/22.The outline of the course of structured as follows:
• Understanding material characterization methods
- X-ray diffraction, electron microscopy (SEM-TEM) and Energy Dispersive Spectroscopy (EDS), micro- and nano-mechanical testing techniques. Notes on metallography and non-destructive testing.
• Wet Corrosion
- Electrochemical aspects of degradation, wet corrosion, Pourbaix diagrams, corrosion kinetics, ddp and mixed potential theory - passive, corrosion in natural environments and hostile environments, prevention, protection, diagnosis and monitoring methods
• Tribology
- -Contact mechanics. Tribological aspects of degradation (adhesion, friction and wear), main types of wear (adhesive and abrasive).
- Theory, methods and standards for quantifying wear, protection strategies.
- Protection of materials
• wear-resistant and corrosion-resistant coatings, thermal barrier coatings (TBCs).
- Deposition technologies: galvanic coatings, Physical Vapor Deposition (PVD) and Chemical Vapor Deposition coatings, thermal spray.
• Composite materials
- basic concepts (matrix-reinforcement-interface) and classification; rule of mixture, matrix reinforcement, durability and degradation (creep, fatigue, hydrolysis). Design criteria: laminated and sandwich composite structures; Production technologies: hand layup, Filament winding, hot stamping, vacuum bag, Resin Transfer Molding, Spray-up. Examples of applications of composites.
• Advanced ceramics
- correlation between precursors, production, structure and properties of ceramics. Reliability criteria (Weibull statistics); Production technologies: sintering, hot isostatic pressing, slip casting, tape casting, co-deposition, thermal spraying. Examples of application of ceramics for refractory components and thermal barrier coatings. Wear and corrosion.
• Material Selection Processes:
- Materials Selection Processes using CES (Cambridge Engineering Selector) software: basic concepts, performance indices and their graphical representation, material selection problems in a number of relevant examples for mechanical and aeronautical engineering.
Core Documentation
Textbook: W.D. Callister, Scienza e Ingegneria dei Materiali EdiSESCourse management: https://moodle1.ing.uniroma3.it/
Slides and course notes: https://moodle1.ing.uniroma3.it/
Online notes, www.stm.uniroma3.it
Reference Bibliography
W.D. Callister, Scienza e Ingegneria dei Materiali EdiSESType of delivery of the course
The course consists of 35 lectures with students in classroom. A series of lectures may be taken in the Interdepartmental laboratory of electron microscopy (LIME), in order to give students the opportunity to attend some guided experiments using real laboratory equipment, immediately after the related theoretical lecture. Some additional lectures are focused on the direct use by the students of some of the characterization equipment that are available the LIME and the STM labs.Attendance
It is highly recommended to follow lectures "in presence", given the practical and experimental nature of this course.Type of evaluation
The students will be evaluated by a written and oral examination. It may be possible to have an intermediate examination at the middle of the course.