636-0303/03 – Materials in Air Traffic (MvL)
| Gurantor department | Department of Material Engineering | Credits | 4 |
| Subject guarantor | prof. Ing. Eva Mazancová, CSc. | Subject version guarantor | prof. Ing. Eva Mazancová, CSc. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 1 | Semester | summer |
| | Study language | Czech |
| Year of introduction | 2010/2011 | Year of cancellation | 2012/2013 |
| Intended for the faculties | FS | Intended for study types | Bachelor |
Subject aims expressed by acquired skills and competences
The students are able to orient themselves among various metallic and non-metallic materials, considered for design of airplanes or for their maintenance. The ultrahigh strength steels used for landing gears are defined by chemical composition, manufacturing technology, the properties and by market. The same may be specified at Al-alloys,Mg-alloys and Ti-alloys. Also, the basic knowledge about the technical ceramics, composites and plastic materials is demonstrated.
Teaching methods
Lectures
Tutorials
Experimental work in labs
Summary
Steels, high strength and ultrahigh strength steels, austenitic, ferritic,
martensitic, duplex and superduplex stainless steels. Nickel, nickel alloys
and superalloys, aluminium and its alloys, titanium and its alloys, the
composites and non-metals. Structure and microstructure, mechanical properties,
non-destructive testing, defectoscopie, evaluation of life, reliability and
safety against brittle fracture. Evaluation of plane and local corrosion,
stress corrosion cracking , hydrogen embrittlement , fatigue and corrosion
fatigue. Optimization of aircraft material properties and their quality
controll.
Compulsory literature:
1. Steel – a handbook for material research and engineering, Verein Deutcher
Eisenhüttenleute, Vol. 2, Springer Verlag, 1993
2. Advanced materials and processes; Vol. 159, No. 12, ASM International, 2001
3. ASM Handbook, Vol. 13 – Corrosion, ASM, 1992
Recommended literature:
Way of continuous check of knowledge in the course of semester
E-learning
Other requirements
nnnnnnnnnnnnnnnnnnnnn
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lectures:
1st Introduction to material solutions for air transport. Description
basic types of aircraft (transport, industrial, military) and space
shuttle.
2nd High strength and middle strength steel type 4330, 4340, M300, and D6AC
conventional and unconventional characteristics (strength and plastic properties
notch and fracture toughness, fatigue properties, crack growth kinetics in
hydrogen embrittlement, when corrosion cracking and corrosion fatigue podnapětím.
3rd Stainless austenitic, martensitic and austenitic aging
aging steel. Their strength and plastic characteristics, impact strength and fracture
toughness, fatigue and growth kinetics when exposed to hydrogen and other corrosive
environment.
4th Procedural characteristics of high strength steel, manufacturing capabilities,
technology of steel production, its casting, forming, heat treatment,
welding and testing. Examples of applications in aerospace industries.
5th Aluminium and its various high-strength alloys. Alloys used in
Aviation. Strength and plastic properties, notch and fracture toughness
Fatigue characteristics of alloys of Al-Li Al-Li-Mg-Mn, Al-Mg-Mn, Al-Mg.
6th Procedural characteristics of aluminum and its alloys. Thermal Technology
processing. Non-destructive testing. Vote for durability, reliability and
safety against brittle fracture.
7th Titanium and titanium alloys. Evaluation of microstructures alpha, beta and alpha +
beta. Optimizing the properties of these alloys by heat treatment. Description alloys
Ti-6Al-4V (Ti-6-4), Ti-6-22-22-6242 Ti, Ti-10-2-3-Ti 15-3 and Ti-3-2, 5 and
how they use to combat the F-22.
8th Procedural characteristics of titanium and titanium alloys. Technology
heat treatment and microstructural characteristics. Lifetime,
reliability and safety against brittle fracture.
9th Magnesium and its alloys. Properties of magnesium alloys in relation to chemical
composition, microstructure and chemical composition. Application of magnesium alloys
Aviation. Description of Al-Mg alloys, Mg-Al-Mn-Zn, Mg-Al-Mn-Zn-Zr and Mg-Th-Zr
10th Nickel and nickel superalloys. Description of the chemical composition, mechanical
properties and characteristics of non-conventional alloys of nickel and Inconel, Udimet,
Nimonic and Hastelloy.
11th Process and characteristics of the nickel superalloys. Smelting technology,
casting, forming, heat treatment and welding. Rating life
reliability and safety against brittle fracture.
12th Composite and non-metals. Characteristics, properties and method of labeling
of composite and metallic materials used to construct
aircraft.
13th Surface engineering for aircraft structures. Coatings and Surface
spraying. Clad materials, materials with welded surface. Protection
surface and localized corrosion. Methods of surface protection.
14th Examples of accidents and localized corrosion mechanism koroze.Volba
Welding and soldering. Suitable fasteners. Methods of evaluation
Weld and pájenýách spojů.Obecné principles nedestruktivníhozkoušení
components and units. Description of the methods in metallography,
elektronomikroskopickém testing and fractography.
Exercise:
1st Introduction to Materials in Aviation
2nd Steel and high-strength steel. Assessment of the effect of heat treatment on
strength characteristics of steel.
3rd Steel and high-strength steel. Methodology for non-destructive testing
components and units.
4th Vote for the presence of surface cracks in products for aviation.
5th Vote for the presence of internal cracks and defects.
6th Determination of hardening characteristics of aluminum and titanium alloys
7th Evaluation of fracture toughness of nickel-base superalloys and aluminum alloys
and titanium.
8th Evaluation of characteristics and fatigue characteristics of growth kinetics
fatigue cracking mechanism.
9th Proposal for a thermal treatment technology for specific aircraft components from
Al-Mg
10th Design technology of heat treatment of titanium alloy components.
11th Surface protection against corrosion of nickel-base superalloys. Material
evaluation of composite and metallic components.
12th Metallographic evaluation of selected aluminum alloys, titanium, magnesium and nickel.
13th Evaluation of hardness and microhardness of the welded joints of nickel superalloys.
14th Evaluation of hardness and microhardness of the welded joints of aluminum alloy.
Final evaluation of students and award credit
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction