4 RESULTADOS E DISCUSSÕES
5 CONCLUSÕES E SUGESTÕES PARA PRÓXIMOS TRABALHOS
O uso de materiais compósitos na indústria aeroespacial vem seguido uma tendência crescente, com este tipo de material substituindo progressivamente componentes feitos a partir de suas contrapartes metálicas. O uso de materiais compósitos em certas aplicações estratégicas, entretanto, tais quais em fuselagem, ainda não é uma realidade, devido a estes materiais estarem sujeitos a falhas não visíveis ao olho nu e que podem originar-se a partir de fenômenos aos quais estes estão rotineiramente expostos. Um destes são os impactos, os quais podem ocorrer em função de choques mecânicos de diferentes naturezas e energia. Neste sentido, o presente estudo foi conduzido com o intuito de dar apoio a técnicas de SHM de materiais compósitos, permitindo a localização em tempo real de impactos.
A presente metodologia tem apresentado margens de erro promissoras e provado ser uma técnica de localização de impactos interessante e comercialmente competitiva, a despeito dos desafios aos quais está sujeita. Os valores médios de erro obtidos são superiores em termos de qualidade a diversas outras metodologias e estão em consonância com os padrões exigidos por agências regulatórias para este tipo de aplicação, o que motiva aperfeiçoamentos no método e sua implementação e estudo em ambientes mais complexos (p.ex., outras geometrias, sob condições de contorno não nulas).
Ademais, o método permite espaço a mais melhorias via estudo de diferentes arranjos de sensor e abordagens mais eficientes para o mapeamento da função de erro, o que pode melhorar significantemente os tempos de processamento do algoritmo. Concomitantemente, os avanços em localizar impacto motivam o desenvolvimento de metodologias para regenerar o histórico da força de impacto e investigar ativamente os “hot spots” catalogados.
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