The Braunschweig International Graduate School of Metrology together with the Technical Cooperation of PTB offer the opportunity for currently two PhD scholarships each year for students engaged in natural sciences or engineering. The funding is provided by the German Federal Ministry for Economic Cooperation and Development (BMZ) to support developing and emerging countries (please see full list of partner countries) in the field of quality infrastructure. Initially, funding will be granted for one year. Given that it typically takes three years to complete a doctoral thesis PTB will be committed to obtain a follow-up funding. The size of the grants is comparable to grants provided by the German Academic Exchange Service (DAAD). The scholarships will be located at TU Braunschweig.
An excellent academic record and fluent English are prerequisites; skills in the German language are welcome. The submission should include CV, transcripts of the most important documents of professional qualification and a letter of application. B-IGSM promotes the professional equality of women and men and is thus especially interested in applications from women. Disabled persons will be given priority if they have the same occupational aptitude. Any granting of a scholarship has to be approved by the International Office of TU Braunschweig taking into account the Promotionsordnung (PhD Regulations) of the respective faculty where the scholarship will be located.
Please note that any application needs to be submitted via the application portal of B-IGSM.
Influence of Temperature in Additive Manufacturing
Additive manufacturing is getting more and more influence in many production processes. Not only polymers are processed, but metals and ceramics are gaining in importance. The quality of all manufactured objects is influenced by temperature. This regards the temperature of the nozzle during printing, the temperature of the heat bed, the homogeneity of temperature with in the printer enclosure and many more influencing parameters.
In this PhD thesis the influence of temperature should be investigated in a systematic study and the most important influences of temperature on the final dimensional tolerances of the products will be analysed. The methods for temperature measurement have to be adapted to the processed material. To determine without contact the nozzle temperature radiation thermometry can be engaged. The heat bed homogeneity is investigated by thermal imaging. For the temperature control different contact thermometers are employed. For optimization of novel polymers in additive manufacturing the glass temperature, the melting point and the temperature dependence of viscosity and of the elastic properties have to be investigated. All these temperature measurement should fit into a consistent picture with well understood measurement uncertainties.
Prof. Dr. Meinhard Schilling
Institut für Elektrische Messtechnik und Grundlagen der Elektrotechnik
m [dot] schilling [at] tu-braunschweig [dot] de