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Materials

Code: LTE21111     Sigla: MAT

Áreas Científicas
Classificação Área Científica
OFICIAL Solid Mechanics

Ocorrência: 2023/2024 - 1S

Ativa? Yes
Página Web: https://teams.microsoft.com/l/channel/19%3aYwzH84jrXlVW4k1VCNCM86DBbZ_MDeF9OMLy5HTUsdM1%40thread.tacv2/Geral?groupId=ebdccee3-f915-4cd0-9cde-6496d05e78c2&tenantId=ad28c625-f2ca-4e91-b6d6-18922bc9391c
Unidade Responsável: Departamento de Engenharia Mecânica
Curso/CE Responsável:

Ciclos de Estudo/Cursos

Sigla Nº de Estudantes Plano de Estudos Anos Curriculares Créditos UCN Créditos ECTS Horas de Contacto Horas Totais
LTE 35 Plano de Estudos 1 - 6 75 162

Docência - Responsabilidades

Docente Responsabilidade
Célio Gabriel Figueiredo Pina

Docência - Horas

Theorethical: 2,00
Practical and Laboratory: 3,00
Type Docente Turmas Horas
Theorethical Totais 1 2,00
Célio Gabriel Figueiredo Pina 2,00
Practical and Laboratory Totais 2 6,00
Marta da Silva Ferreira 4,00
Célio Gabriel Figueiredo Pina 1,00

Língua de trabalho

Portuguese
Obs.: Português/inglês

Objetivos

Promoting knowledge of different types of materials used in mechanical engineering: metals, polymers, ceramics and composites and the relationship between their properties, structure, process and service performance. Recognizing the need for design with new materials.

Resultados de aprendizagem e competências

1. Lectures with presentation of concepts and correlation between different types of materials. Typical cases and examples of materials and their application are also discussed. 2. Lab-Practice classes with solving problems. Experimental work in the laboratory is performed in-group, including testing of materials characterization and mechanical testing. Discussion of the reports of the experimental work is included.
Continuous assessment consists of tests and ten laboratory assignments. The assessment can also be made through a final exam.

Modo de trabalho

Presencial

Programa

1. Introduction
Classification of materials. Advanced materials. Modern materials’ needs.
Interatomic bonding. Primary interatomic bonds. Secondary bonding or van der Waals bonding. The structure of crystalline solids. Fundamental concepts. Unit cells. Metallic crystal structures. Density. Polymorphism and allotropy. Noncrystalline solids.
Crystal Systems. Point coordinates. Crystallographic directions. Crystallographic planes. Linear and planar densities. Close-packed crystal structures
Polycrystalline materials. Anisotropy. X-ray diffraction: determination of crystal structures.
Imperfections in solids. Vacancies and self-interstitials. Impurities in solids. Dislocations and strengthening mechanisms. Characteristics of dislocations. Plastic deformation of polycrystalline materials. Bulk or volume defects. Microscopic techniques.
Diffusion. Diffusion mechanisms. Steady-state diffusion. Nonsteady-state diffusion
Phase diagrams. Solubility limit. Phases. Microstructure. Phase equilibria. One-component (or unary) phase diagrams. Binary isomorphous systems. Interpretation of phase diagrams. Binary eutectic systems. Development of microstructure in eutectic alloys. Equilibrium diagrams having intermediate phases or compounds. Eutectic and peritectic reactions. Solid-phase transformations.

2. Metals
Ferrous alloys. The Iron–Iron Carbide (Fe–Fe3C) phase diagram
Development of microstructure in Iron–Carbon alloys. The influence of other alloying elements.

3. Mechanical properties and testing of materials

4. Heat treatment of steels
Microstructures. Annealing. Quenching and tempering. Tempered martensite. Surface treatments. Mechanical behaviour of Iron–Carbon alloys. Influence of heat treatment in mechanical properties

5. Ceramics
Advanced ceramics. Brittle fracture of ceramics. Stress-strain behavior
Mechanisms of plastic deformation. Mechanical properties.
6. Polymers
Thermoplastic and thermosetting polymers. Copolymers.
Polymer crystallinity. Polymer crystals. Defects in polymers. Crystallization. Melting and glass transition temperatures. Factors that influence melting and glass transition temperatures. Mechanical properties
7. Composites
Fiber-reinforced composites. The fiber phase. The matrix phase
Polymer-matrix composites. Hybrid composites. Laminar composites. Sandwich panels. Mechanical properties.

Bibliografia Obrigatória

W.D. CALLISTER, JR., JOHN WILEY AND SONS, INC. 7TH EDITION (2007); MATERIALS SCIENCE AND ENGINEERING: AN INTRODUCTION
W. F. SMITH, MCGRAW-HILL, 3ªEDIÇÃO (1996); PRINCÍPIOS DE CIÊNCIA E ENGENHARIA DOS MATERIAIS

Métodos de ensino e atividades de aprendizagem

Theoretical classes with the presentation of concepts and correlations between different types of materials.
Practical-Laboratory classes with problem-solving. Execution of experimental work in a laboratory environment, including material characterization tests and mechanical tests.

Tipo de avaliação

Distributed evaluation with final exam

Componentes de Avaliação

Designation Peso (%)
Teste 50,00
Trabalho escrito 20,00
Trabalho laboratorial 30,00
Total: 100,00

Componentes de Ocupação

Designation Tempo (Horas)
Frequência das aulas 45,00
Trabalho laboratorial 30,00
Estudo autónomo 37,00
Trabalho de investigação 30,00
Trabalho escrito 20,00
Total: 162,00

Obtenção de frequência

Final grade = 30% 1st test grade+ 20% 2nd test grade+ 20% apresentation grade+ 30% Laboratory Grade

If students do not pass the TP component (tests + apresentation), the final grade will be that of the TP component

Fórmula de cálculo da classificação final

Final grade = TP grade(40% Test + 30% written work)+ 30% Laboratory Grade
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