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CONFIABILIDADE ESTRUTURALDE DUTOS COM DEFEITOS DE CORROSÃO
INTRODUÇÃO A análise de confiabilidade estrutural é baseada na perda de espessura de parede do duto L d t OBJETIVOS -  Determinar a probabilidade de falha (POF de cada defeito ou do segmento) de um duto -  Determinar quando será feita a próxima inspeção -  Determinar quantos reparos deverão ser feitos para atender à POF admissível
ANALISE DE CONFIABILIDADE ESTRUTURAL A confiabilidade de uma estrutura: A POF pode ser entendida como a probabilidade da carga máxima que atua na estrutura, L, exceder a resistência da estrutura, R, durante a sua vida útil (R < L):
MÉTODOS PARA O CÁLCULO DA POF Cálculo da POF : Índice de Confiabilidade: MÉTODO DE PRIMEIRA ORDEM (FORM) Algoritmo de Hasofer, Lind, Rackwitz e Fiessler (HL-RF)
MÉTODO DE SIMULAÇÃO DE MONTECARLO Amostragem por Hipercubo Latino MÉTODO DE PROPAGAÇÃO DE INCERTEZAS
ANALISE DE CONFIABILIDADE ESTRUTURAL DE SISTEMAS Série: Paralelo: A probabilidade de falha de um duto com defeitos de corrosão é calculada como um sistema em série, onde a falha de um defeito provoca a falha do duto
CÁLCULO DA POF DE UM DUTO CORROÍDO ASME B31G, B31G Modificado, DNV RP-F101, Battelle, Shell-92... MODELOS DE Pruptura Por exemplo:
CÁLCULO DA TAXA DE CORROSÃO Extrapolação: Valor Extremo Máximo Tipo I:
CONCLUSÕES O programa permite: - Correr uma análise de confiabilidade para dutos corroídos através de diferentes funções limites e métodos de confiabilidade. - Calcular a taxa de corrosão usando a teoria de valor extremo. ,[object Object],- Calcular o número de reparos que devem ser feitos no dutos se a POF excede a  POF   admissível.

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Confiança estrutural de dutos corroídos

  • 1. CONFIABILIDADE ESTRUTURALDE DUTOS COM DEFEITOS DE CORROSÃO
  • 2. INTRODUÇÃO A análise de confiabilidade estrutural é baseada na perda de espessura de parede do duto L d t OBJETIVOS - Determinar a probabilidade de falha (POF de cada defeito ou do segmento) de um duto - Determinar quando será feita a próxima inspeção - Determinar quantos reparos deverão ser feitos para atender à POF admissível
  • 3. ANALISE DE CONFIABILIDADE ESTRUTURAL A confiabilidade de uma estrutura: A POF pode ser entendida como a probabilidade da carga máxima que atua na estrutura, L, exceder a resistência da estrutura, R, durante a sua vida útil (R < L):
  • 4. MÉTODOS PARA O CÁLCULO DA POF Cálculo da POF : Índice de Confiabilidade: MÉTODO DE PRIMEIRA ORDEM (FORM) Algoritmo de Hasofer, Lind, Rackwitz e Fiessler (HL-RF)
  • 5. MÉTODO DE SIMULAÇÃO DE MONTECARLO Amostragem por Hipercubo Latino MÉTODO DE PROPAGAÇÃO DE INCERTEZAS
  • 6. ANALISE DE CONFIABILIDADE ESTRUTURAL DE SISTEMAS Série: Paralelo: A probabilidade de falha de um duto com defeitos de corrosão é calculada como um sistema em série, onde a falha de um defeito provoca a falha do duto
  • 7. CÁLCULO DA POF DE UM DUTO CORROÍDO ASME B31G, B31G Modificado, DNV RP-F101, Battelle, Shell-92... MODELOS DE Pruptura Por exemplo:
  • 8.
  • 9.
  • 10. CÁLCULO DA TAXA DE CORROSÃO Extrapolação: Valor Extremo Máximo Tipo I:
  • 11.
  • 12.