Foi desenvolvido um diafragma de elevada vida útil e biocompatibilidade a ser utilizado em um dispositivo de assistência ventricular esquerda(DAV) eletromecânico de dimensões reduzidas e totalmente implantável. Foi realizado teste de resistência do diafragma de poliuretana com superfície texturizada. O teste avaliou sua resistência para experimentos In Vivo de até quinze dias com o DAV implantado em bezerro. Uma superfície de endotélio natural tem excelente tromboresistência. A quantidade e as características da neointima formada em um DAV são determinadas pela superfície do material, hemodinâmica e condições físico-patológicas. O implante de patch na aorta abdominal de porco isola as variáveis que normalmente estão presentes durante a utilização do DAV e que interferem na hemocompatibilidade do material. A avaliação das características do material foi obtida com o seu implante na parede da aorta descendente em contato com o fluxo sanguíneo. Diferentes tipos de superfície de contato foram avaliadas em sete experimentos In Vivo. Este estudo está voltado para as reações de interface sangue / material. Um estudo histológico foi realizado ao final de cada experimento para analisar as interações entre o sangue e o material, quantificando e qualificando a intima neo formada sobre a superfície de contato, calcificação e deposições de elementos constituintes do sangue / It has been developed a high lifetime and biocompatible diaphragm to be used in a Left Ventricle Assist Device (LVAD) that is a reduced dimension totally implantable electromechanical device. It has been performed an endurance test on a textured diaphragm made of polyurethane. This test has evaluated the diaphragm resistance to be used in In Vivo tests with the LVAD implanted for fifteen days in calves. A natural endothelial cell surface has excellent thromboresistant characteristics. The quantity and the characteristics of the neointima formed into LVAD are determined by the material surface, hemodynamics of the blood through the device, and the physico-pathological conditions. The patch implantation into the abdominal aorta of pigs has isolated some normal variables that usually are present during LVAD utilization and that may interfere on the material biocompatibility. The evaluation of the material’s characteristics has been enhanced through its implantation at the descending aorta wall in contact with blood flow. Different kinds of contact surfaces of specific polyurethane are tested in seven In Vivo experiments. This study is totally focused in the reaction of the blood-material interface. A histogical study is performed in the end of every animal experiment to analyze the interactions between blood and biomaterial. It’s emphasized the quantification and qualification of the neointima over the blood contact surface, calcification, and blood depositions

Foi desenvolvido um diafragma de elevada vida útil e biocompatibilidade a ser utilizado em um dispositivo de assistência ventricular esquerda(DAV) eletromecânico de dimensões reduzidas e totalmente implantável. Foi realizado teste de resistência do diafragma de poliuretana com superfície texturizada. O teste avaliou sua resistência para experimentos In Vivo de até quinze dias com o DAV implantado em bezerro. Uma superfície de endotélio natural tem excelente tromboresistência. A quantidade e as características da neointima formada em um DAV são determinadas pela superfície do material, hemodinâmica e condições físico-patológicas. O implante de patch na aorta abdominal de porco isola as variáveis que normalmente estão presentes durante a utilização do DAV e que interferem na hemocompatibilidade do material. A avaliação das características do material foi obtida com o seu implante na parede da aorta descendente em contato com o fluxo sanguíneo. Diferentes tipos de superfície de contato foram avaliadas em sete experimentos In Vivo. Este estudo está voltado para as reações de interface sangue / material. Um estudo histológico foi realizado ao final de cada experimento para analisar as interações entre o sangue e o material, quantificando e qualificando a intima neo formada sobre a superfície de contato, calcificação e deposições de elementos constituintes do sangue / It has been developed a high lifetime and biocompatible diaphragm to be used in a Left Ventricle Assist Device (LVAD) that is a reduced dimension totally implantable electromechanical device. It has been performed an endurance test on a textured diaphragm made of polyurethane. This test has evaluated the diaphragm resistance to be used in In Vivo tests with the LVAD implanted for fifteen days in calves. A natural endothelial cell surface has excellent thromboresistant characteristics. The quantity and the characteristics of the neointima formed into LVAD are determined by the material surface, hemodynamics of the blood through the device, and the physico-pathological conditions. The patch implantation into the abdominal aorta of pigs has isolated some normal variables that usually are present during LVAD utilization and that may interfere on the material biocompatibility. The evaluation of the material’s characteristics has been enhanced through its implantation at the descending aorta wall in contact with blood flow. Different kinds of contact surfaces of specific polyurethane are tested in seven In Vivo experiments. This study is totally focused in the reaction of the blood-material interface. A histogical study is performed in the end of every animal experiment to analyze the interactions between blood and biomaterial. It’s emphasized the quantification and qualification of the neointima over the blood contact surface, calcification, and blood depositions

Bakgrund: Hjärnskakning är en vanlig skada inom ishockey. Efter skada ses även påverkan på cervikala strukturer och nackutredning föreslås som en del i undersökningen efter hjärnskakning.  Neck Flexor Endurance Test är ett test som använts för att mäta nackflexorernas uthållighet. Syftet med den här studien var att fastställa normalvärde för junior-senior ishockeyspelares uthållighet i stabiliserande cervikal muskulatur.  Design:Deskriptiv pilotstudie Metod: Totalt 40 friska ishockeyspelare (33 herrjuniorer och 7 damspelare) testades i ryggliggande. Testpersonen höll huvudet statiskt i given position och testledaren observerade att testen utfördes rätt och klockade tiden med tidtagarur. Inga andra hjälpmedel användes. Varje deltagare hade två försök och tiden mellan försök ett och två var två minuter Resultat: Medelvärde för hela gruppens båda försök var 55,5 sekunder. Medelvärde för försök ett var för hela gruppen 62,3 sekunder +22,8, försök två 48,5 sekunder +18,1. Skillnaden mellan försök ett och försök två var statistiskt säkerställd (p<0,05). Konklusion: 40 friska ishockeyspelare har i den här studien uthållighet i nackens flexorer på i medelvärde 62,3 sekunder i ett försök. Spridningen var för stor för att man ska kunna ge råd om generell baseline. Skillnaden mellan gruppens försök ett och försök två tyder på att längre tid än två minuter behövs för full återhämtning av testade muskler.

Thesis discusses bearings failure detection that is manifesting with increased levels of vibration and acoustic emission. The first part of my work gives introduction to common disorders arising on bearings during operation and negative effects on the bearing condition. Further the thesis makes the reader familiar with the terms of vibration and acoustic emission. The work includes a description of available methods for signal evaluation of vibration and acoustic emissions in order to diagnose the state of the bearings in the domains of time and frequency. In the practical part is explained the vibrodiagnostic concept with focus on bearing endurance test. Part of this practical test is a balance sheet for hardware with marginal parametres and a software description. The work is complemented with sorted database of processed topics from the magazine Orbit Bentley Nevada.

Die Marktbedingungen in der Automobilindustrie sind durch kürzere Entwicklungszeiträume, eine zunehmende Anzahl an Komfortfunktionen und Fahrzeugderivaten sowie steigende Erwartungen an Qualität, Effizienz und Sicherheit geprägt. Die reale Erprobung ist ein kritischer Pfad im Entwicklungsprozess. Die vorliegende Arbeit beschreibt ein neues Prüfsystemkonzept für die Komponentenerprobung, welches diesen Anforderungen Rechnung trägt. Das Herzstück ist eine softwarebasierte Systemarchitektur zur Automatisierung von Prototypentests. Schwerpunkte sind die Flexibilität in der Praxisanwendung, die Ausweitung der Messdatenerfassung mit zweckmäßiger Verwaltung zur Bauteilüberwachung und Fehlerrekonstruktion sowie eine aufgabenorientierte Schnittstelle zur Integration von Robotern. Diese übernehmen die mechanische Betätigung von beweglichen Fahrzeugkomponenten. Anhand von zwei konkreten Beispielen, einem Prüfstand zur Absicherung von Fahrzeugtüren sowie einem Prüfstand für Steifigkeitsmessungen wird die Praxistauglichkeit nachgewiesen.

Die Marktbedingungen in der Automobilindustrie sind durch kürzere Entwicklungszeiträume, eine zunehmende Anzahl an Komfortfunktionen und Fahrzeugderivaten sowie steigende Erwartungen an Qualität, Effizienz und Sicherheit geprägt. Die reale Erprobung ist ein kritischer Pfad im Entwicklungsprozess. Die vorliegende Arbeit beschreibt ein neues Prüfsystemkonzept für die Komponentenerprobung, welches diesen Anforderungen Rechnung trägt. Das Herzstück ist eine softwarebasierte Systemarchitektur zur Automatisierung von Prototypentests. Schwerpunkte sind die Flexibilität in der Praxisanwendung, die Ausweitung der Messdatenerfassung mit zweckmäßiger Verwaltung zur Bauteilüberwachung und Fehlerrekonstruktion sowie eine aufgabenorientierte Schnittstelle zur Integration von Robotern. Diese übernehmen die mechanische Betätigung von beweglichen Fahrzeugkomponenten. Anhand von zwei konkreten Beispielen, einem Prüfstand zur Absicherung von Fahrzeugtüren sowie einem Prüfstand für Steifigkeitsmessungen wird die Praxistauglichkeit nachgewiesen.

The Diploma thesis deals with the testing of electrically assisted turbochargers. Aim of this work is to apply the established way of the performance testing of conventional turbochargers for electrically assisted turbocharger. Part of this work is to create a program for the calculation of the observed characteristics of the turbocharger. The program is extended to the characteristics of the generator for electrically assisted turbocharger. The program will serve as a basic for control the data for tested motorsport applications.