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Condition Maintenance

Code: MI18     Sigla: MC

Áreas Científicas
Classificação Área Científica
CNAEF Metallurgy and Metal Mechanics

Ocorrência: 2022/2023 - 1S

Ativa? Yes
Unidade Responsável: Departamento de Engenharia Mecânica
Curso/CE Responsável: Professional Technical Higher Education Course in Industrial Maintenance

Ciclos de Estudo/Cursos

Sigla Nº de Estudantes Plano de Estudos Anos Curriculares Créditos UCN Créditos ECTS Horas de Contacto Horas Totais
TSPMI 10 Plano de Estudos 2 - 3 30 81

Docência - Responsabilidades

Docente Responsabilidade
Vitor Manuel Reis da Cruz

Docência - Horas

Theorethical and Practical : 2,00
Type Docente Turmas Horas
Theorethical and Practical Totais 1 2,00
Emanuel Capelinha Rodrigues 1,00
Vitor Manuel Reis da Cruz 1,00

Língua de trabalho

Portuguese
Obs.: Português

Objetivos

Transmit the concepts of conditioned maintenance as a complement to preventive maintenance.

Refer to the various techniques used in conditioned maintenance namely vibration analysis, oil analysis, thermography, ultrasound and extensometer.

Since vibration analysis is one of the techniques that allows the recognition of a greater number of anomalies in equipment, knowledge of the vibration phenomenon will be provided that allows characterizing the dynamic behavior of an equipment.

Know the various sensors and vibration measurement equipment used in maintenance conditioned by vibration analysis as well as the computer applications of data processing collected.

Frequency analysis techniques should be used to allow the diagnosis of equipment anomalies and, in the case of imbalance, vibration analysis balancing procedures will be applied.

Resultados de aprendizagem e competências

Understand and characterize conditioned maintenance in the organization and management of the maintenance of a company.

Know the various sensors and measuring equipment used in conditioned maintenance, namely vibration analysis as well as computer applications of data processing collected.

Know and understand the application and procedure and care in performing the various techniques used in the maintenance conditioned in different inspection techniques in the conditioned maintenance, namely in the analysis of vibrations, analysis of oils, thermography, magnetic particles, radiography and ultrasound.

Since vibration analysis is one of the techniques that allows the recognition of a greater number of anomalies in equipment, knowledge of the vibration phenomenon will be provided that allows characterizing the dynamic behavior of an equipment.

Know the use of frequency analysis techniques that allow the diagnosis of anomalies in equipment and, in the case of imbalance, balancing procedures will be applied by vibration analysis.

Modo de trabalho

Presencial

Programa


  1. Conditioned Maintenance Concepts


Conditioned Maintenance. Control parameters and counters. Control variables: vibration analysis; oil analysis; thermography; Ultrasound; and so on.



  1. Introduction to the study of vibrations


Simple harmonic movement. Amplitude, frequency and phase of a signal. Characterization of the vibration of an equipment: displacement; speed and acceleration. Sum of vibration signals with the same frequency and nearby frequencies. Heart rate phenomenon.



  1. Oscillatory systems of a degree of freedom


Components of a vibratory system: mass; spring and damper. System of a degree of freedom. Free vibration and forced vibration. Resonance phenomenon. Support base movement. Transmissibility. Vibration isolation.



  1. Sensors and signal analysis


Sensors (accelerometers, speedometers and position transducers) and signal conditioners. Acquisition and processing of vibration signals. Frequency analysis. Spectral Analyzers. Use of computer applications of conditioned maintenance.



  1. Diagnosis and correction of equipment malfunctions by vibration analysis


Vibrations in service. Spectrum of a working equipment. Characterization of type breakdowns in equipment. Identification of anomalies: imbalance, misalignment, clearances, resonance, etc. Imbalance. Balancing techniques to one plane and two planes. Presentation of historical cases of equipment malfunctions.

Bibliografia Obrigatória

Filomena Almeida; João Barata; Pedro Barros; Ensaios não destrutivos, ISQ Edições, 1992. ISBN: ISBN: 972-9228-12-4

Métodos de ensino e atividades de aprendizagem

TP classes + laboratory testing

Tipo de avaliação

Distributed evaluation without final exam

Componentes de Avaliação

Designation Peso (%)
Teste 60,00
Trabalho laboratorial 40,00
Total: 100,00

Componentes de Ocupação

Designation Tempo (Horas)
Estudo autónomo 40,00
Frequência das aulas 60,00
Trabalho laboratorial 25,00
Total: 125,00

Obtenção de frequência

2 tests + Work work and reports

 

Final Note Prof. Emanuel Rodrigues (NF_ER): = 0.6*T1 + 0.4*R1

Final Note Prof. Vitor Cruz (NF_VC): = 0.6*T2 + 0.4*R2

 

T1 - Test of Prof. Emanuel Rodrigues.

T2 - Test of Prof. Vitor Cruz.

R1 is the average of the reports of the laboratory activities of Prof. Emanuel Rodrigues.

R2 is the average of the reports of the laboratory activities of Prof. Vitor Cruz.

Fórmula de cálculo da classificação final

Final Note Nota (NF)

NF= (NF_ER + NF_VC) * 0,5

 

Conditions for approval at UC:

NF >= 9.5 values

NF_ER >=9.5 values

NF_VC >= 9.5 values

 

At the time of the exams, students who did not obtain approval at the UC recover the test(s), T1 and T2.

Observações

Question time

Prof. Emanuel Rodrigues - Tuesday from 11:30 to 13:30, E204.

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