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Additive manufacturing (AM), also known as 3D printing, is a concept and method of a manufacturing process that builds a three-dimensional object layer-by-layer. Opposite to the conventional subtractive manufacturing, it conquers various limitations on component design freedom and raises interest in various fields, including aerospace, automotive and medical applications. This thesis studies the mechanical behavior of thin-walled component manufactured by a common AM technique, laser powder bed fusion (LPBF). The studied material is Hastelloy X, which is a Ni-based superalloy, and it is in connection to a component repair application in gas turbines. The influence of microstructure on the de...
Eine systematische und wissenschaftliche Betrachtung des Drahtsystems zur Prozessstabilisierung des LMD-W-Prozesses existiert nicht. Das Ziel der Arbeit ist daher die Entwicklung eines Prozess-erklärungsmodells des Drahtsystems zur Prozessstabilisierung des LMD-W-Prozesses für die additive Fertigung. Mit Hilfe experimenteller Prozessanalyse und dem darauf aufbauenden Prozesser-klärungsmodell, unter Berücksichtigung der Wirkzusammenhänge von Drahtförderung und Pro-zessgrößen, können vorhersagbare Schweißergebnisse erreicht werden.
The Man Behind the Syndrome by my friends and colleagues Peter and Greta Beighton is a delightful book which will be read eagedy and with keen intellectual pleasure by all human, medical, and dinical genetieists. The reader with a historical tum of mind will note right away that the book achieyes more than the usual entry in a dictionary of seientific biography. In addition to the standard professional data, it gives a photo and some personal glimpses of the man, allowing the reader to appreeiate his human qualities as weIl. This volume contains, so to speak, the creme de la creme, namely, those in a group whose names are daily on the lips of every practicing dinical geneticist. This interesting and instructive book is commended to all in medical genetics and the history of medieine with the highest enthusiasm and gratitude to its authors for undertaking this labor of love. A second volume is planned for more recently delineated disorders for which an eponym is not yet widely used.
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