Identificação de falhas em compósitos laminados usando Unscented Kalman Filter

Detalhes bibliográficos
Ano de defesa: 2018
Autor(a) principal: Florindo, Leone Bernardo
Orientador(a): Não Informado pela instituição
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal do Espírito Santo
BR
Mestrado em Engenharia Mecânica
Centro Tecnológico
UFES
Programa de Pós-Graduação em Engenharia Mecânica
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
621
Link de acesso: http://repositorio.ufes.br/handle/10/9765
Resumo: Composite materials have numerous applications in the most varied areas of engineering.In this scope, mastery of these materials becomes necessary. The composite materialacquires properties of each materials that constitute it. However, between its layers theremay be adhesion failures, compromising its quality. In this way, it is proposed to estimatethe thermal contact conductance at the interface of a laminated composite, which canbe directly associated with adhesion failures. Therefore, it was proposed to apply theUnscented Kalman Filter with the method of lines to solve an inverse heat transfer problem.It was established a physical problem characterized by being transient regime and two-dimensional, then the thermal contact conductance at the interface between the layers is afunction of time and space in one direction. The temperature measurements used as inputdata for the equations that model the problem were obtained through simulations. In thetests carried out, a variety of materials and composite dimensions were used. A sensitivityanalysis was made regarding noises in the measuared temperatures and a verification ofthe influence of the time in the physical problem relating to the computational effort. Theresults have shown that the methods applied were effective to indentify the laminatedcomposite failure