The improvement of static properties of combined rivet and adhesive bonded joints have been proven by several authors [1, 2]. On the other side, dynamic properties of joints (for example fatigue and corrosion) significantly affect final function of structures during their service life. In this thesis, the combine joints created by blind rivets and hyper elastic sealant are solved. Complex description of dynamic properties of this particular combined joining technology has not been publicised, yet. Description of sealant layer influence on stress concentration in rivet hole regions is one of the main goal of this work. The next stage of the thesis is focused on the influence of above mentioned sealant layer on fatigue properties of combined blind rivet and solid countersunk rivet joints. Stress strain analysis of rivet and combined joints done by FE analysis and by experimental optical measurement of strain field proved that hyper elastic sealant layer has a positive effect on decreasing of stress peaks in rivet hole regions. This findings are in direct compliance with fatigue measurement of combined joint (AAPL). The influence of applied sealant in this combined joints improved fatigue properties by twenty percentage increasing of stress to failure in comparison with rivet joints.

O rebite de repuxo, também conhecido como rebite cego, é um elemento de fixação utilizado em inúmeras aplicações, destacando-se a linha branca, a indústria automotiva e a de esquadrias. O presente trabalho aplica o método QFD para os serviços de uma empresa metalúrgica de conformação a frio de rebites de repuxo, para identificar as necessidades dos clientes e como atendê-las. Tem como objetivo melhorar a qualidade dos serviços envolvidos, possibilitando a elaboração de planos de qualidade que podem transformar as necessidades dos clientes em ações a serem desenvolvidas pela empresa. O modelo conceitual de QFD escolhido para a aplicação desta técnica possibilitou a conclusão de aspectos considerados fundamentais aos clientes, tais como: a agilidade na resolução de problemas com suporte técnico capacitado e formulário para repasse das informações, além de um funcionário responsável por esse cliente e atendimento de forma geral, se tornando um estudo detalhado das necessidades dos serviços prestados pela empresa. / The rivet of drawing, also known as blind rivet, is a setting element which is used in several applications, specially in line products, in the automotive industry and in framing. The present work applies method QFD for services in a metallurgic company of cold shaping of blind rivets, to identify the needs of the customers. It has as objective of improving the quality of the involved services, making possible the elaboration of quality plans which can transform the necessities of the customers into actions to be taken by the company. The conceptual model for the application of this method made possible the conclusion of aspects considered essencial by the customers, such as: the quickness in the resolution of problems with support able technician and form to transference of the information, beyond a responsible employee for this customer and attendance of general form, becoming a detailed study of the needs of the services provided by the company.