O trabalho desenvolvido propõe uma metodologia para coleta e análise de informações sobre o uso de materiais/componentes nos canteiros de obras. Tal metodologia envolve o levantamento de indicadores globais (envolvem todas as etapas do processo de produção: recebimento, estocagem, processamento intermediário, transporte e aplicação final) e parciais (dizem respeito a uma das etapas do processo) sobre consumos e/ou perdas de materiais/componentes. O correlacionamento de tais avaliações numéricas com as situações vigentes no canteiro, serve de subsídio quanto à geração futura de alternativas para a redução destes índices. A metodologia contempla 19 materiais; sua operacionalização é baseada num conjunto de 7 séries de planilhas contendo procedimentos específicos para a coleta de informações e cálculo dos índices. São definidas também diretrizes para a análise dos resultados. Tais instrumentos garantem a padronização da coleta, do processamento e da análise das informações e, conseqüentemente, permite a comparação entre índices levantados em obras diferentes de quaisquer partes do país. / This work proposes a meticulous methodology for data collection and analysis on materials/components consumption and waste in building construction sites. Such a methodology involves the calculation of global and partial indexes on materials/components consumption and/or waste. While the global ones represent the stages roamed by materials until their final destiny (receiving, storage, processing, transport and application) altogether, the partial ones evaluate each stage performance separately. The correlation of these numeric evaluations with the effective work conditions in the construction sites, may provide important figures to help detecting alternatives for the reduction of materials waste. The methodology contemplates 19 materials; its operation is based on a group of seven sheets series contending specific procedures for the information collection and indexes calculation. It also defines guidelines for the results analysis. Such instruments warrant the standardization of the collection, processing, analysis of the information and, consequently, it allows the comparison among indexes representing different construction sites, located in any part of the country.

O trabalho desenvolvido propõe uma metodologia para coleta e análise de informações sobre o uso de materiais/componentes nos canteiros de obras. Tal metodologia envolve o levantamento de indicadores globais (envolvem todas as etapas do processo de produção: recebimento, estocagem, processamento intermediário, transporte e aplicação final) e parciais (dizem respeito a uma das etapas do processo) sobre consumos e/ou perdas de materiais/componentes. O correlacionamento de tais avaliações numéricas com as situações vigentes no canteiro, serve de subsídio quanto à geração futura de alternativas para a redução destes índices. A metodologia contempla 19 materiais; sua operacionalização é baseada num conjunto de 7 séries de planilhas contendo procedimentos específicos para a coleta de informações e cálculo dos índices. São definidas também diretrizes para a análise dos resultados. Tais instrumentos garantem a padronização da coleta, do processamento e da análise das informações e, conseqüentemente, permite a comparação entre índices levantados em obras diferentes de quaisquer partes do país. / This work proposes a meticulous methodology for data collection and analysis on materials/components consumption and waste in building construction sites. Such a methodology involves the calculation of global and partial indexes on materials/components consumption and/or waste. While the global ones represent the stages roamed by materials until their final destiny (receiving, storage, processing, transport and application) altogether, the partial ones evaluate each stage performance separately. The correlation of these numeric evaluations with the effective work conditions in the construction sites, may provide important figures to help detecting alternatives for the reduction of materials waste. The methodology contemplates 19 materials; its operation is based on a group of seven sheets series contending specific procedures for the information collection and indexes calculation. It also defines guidelines for the results analysis. Such instruments warrant the standardization of the collection, processing, analysis of the information and, consequently, it allows the comparison among indexes representing different construction sites, located in any part of the country.

Neue elektrische Antriebskonzepte ermöglichen es, eine hohe Funktionalität in einem eingeschränkten Bauraum unterzubringen. Damit steigt auch in der Landwirtschaft das Interesse an elektrischen Antrieben. Die Projektgruppe Elektrische Maschinen und Antriebe der HTW Dresden beteiligt sich mit der TU Dresden an einem Projekt, bei dem beginnend mit der elektrisch angetriebenen Dreschtrommel umfassend an einem Mähdrescher untersucht wird, wie diese Antriebe in einzelne Funktionselemente integriert werden können. Neben der Auslegung der Antriebe werden Verfahren erarbeitet, die Verluste im Motor mit hoher Genauigkeit zu berechnen. So können in Zukunft passgenaue Kühlkonzepte für diese Antriebstechnik entwickelt werden. Anforderungen gerade im Bereich der Elektromobilität fordern den Blick für neue Materialien, deren elektromagnetisches und thermisches Verhalten werden in ihrem Einfluss auf die Erwärmung untersucht. Analytische und kombinierte Berechnungsmethoden in 2D-FEM gestatten die vereinfachte Rechnung unter Berücksichtigung von Grundwelle und entstehenden Harmonischen zu qualifizieren. Verlustberechnungen aus der transienten FEM-Rechnung ermöglichen diese Verbesserung. Die Methode wird am Beispiel der elektrischen Dreschtrommel mit den berechneten Verlustverteilungen beschrieben. Neue Methoden der 3D-FEM, wie sie die Software Ansys bietet, werden für die Nutzung von Einflüssen der Wirbelstromeffekte und in Auswertung für die Segmentierung von Permanentmagneten dargestellt. Die exemplarisch gewonnenen Erkenntnisse liefern einen Beitrag für weitere Schneidwerksantriebe am Mähdrescher, aber auch darüber hinaus in Projekten mit Herstellern elektrischer Maschinen. / New concepts for electrical drives make it possible to put a high functionality into a restricted structural form. Thereby the interest in electrical drives increases also in the farming. The project team Electrical machines and drives of the HTW Dresden participates together with the TU Dresden in a project, where starting with the electrically driven threshing cylinder is comprehensively examined at a combine harvester, how these drives can be integrated into single function elements. Besides the dimensioning of the drives are developed methods to calculate losses in the engine with high precision. So custom-fit cooling concepts can be developed for this drive technology in future. Requirements just in the area of the electric mobility call looking for new materials, whose electromagnetic and thermic behavior are examined in her influence on the warming. Analytical and combined computation methods in 2D-FEM allow the simplified calculation under consideration of the fundamental wave and the arising harmonic ones. Loss calculations by means of the transient FEM calculation make possible this improvement. The method is described at the example of the electrical threshing cylinder with the calculated loss distributions. New methods of the 3D-FEM, as the software of Ansys offers, are presented for the use of influences of the eddy current effects and in evaluation for the segmentation of permanent magnets. The exemplarily got knowledge provides a contribution for further cut header drives at the combine but also furthermore in projects together with manufacturers of electrical machines.