|Tipo di tesi||Tesi di dottorato di ricerca|
|Titolo||Sviluppo di una nuova generazione di strumenti per l'analisi termica dei materiali.|
|Titolo in inglese||Development of a new generation of measurement instruments for the thermal analysis of materials.|
|Settore scientifico disciplinare||ING-IND/12 - MISURE MECCANICHE E TERMICHE|
|Corso di studi||Scuola di D.R. in HIGH MECHANICS AND AUTOMOTIVE DESIGN & TECHNOLOGY / MECCANICA AVANZATA E TECNICA DEL VEICOLO|
|Data inizio appello||2012-03-26|
|Disponibilità||Accessibile via web (tutti i file della tesi sono accessibili)|
Questa tesi è il riassunto di tre anni di ricerca e sviluppo nel campo degli strumenti di misura ottici per l'analisi termica dei materiali.
The present Thesis is the summary of three years of research in the fields of optical measurement instruments for thermal analysis of materials. The work was developed in collaboration with Expert System Solutions, which produces original optical instruments since more than 20 years ago, for example Heating Microscopes, Dilatometers and Fleximeters. After an in-depth analysis of the actual instruments and development perspective, the design of a software architecture extensible towards new calculation procedures and additional peripherals was recognized as priority. An innovative software was developed for the parallel acquisition and elaboration of data coming from multiple heterogeneous peripherals, such as cameras, stepper motors, thermoregulators, high precision balances. The new platform, called Misura4, increases the time resolution to more than 10 images per second, and the image resolution to 2048x1536 pixel. Advanced image analysis methods produce more accurate and repeatable results. In the microscopy fields, introduce rigorous mathematical criteria for the identification of characteristic shapes and simultaneous analysis up to 24 samples. The sample thermoregulation was designed in order to allow arbitrarily complex and long thermal cycles. A physical model was formulated for the heating and cooling of the kiln, from which a new thermoregulation algorithm was developed, capable of anticipating temperature behavior, while keeping high adaptivity towards external interferences (e.g. eso/endothermic reactions). The resulting algorithm improves the correspondence between the requested temperature curve and the performed one, of fundamental importance for dilatometry measurements. The resulting software platform introduces new kind of measurements, which will be deepened through extensive experimental tests.