Thermal and vacuum post-treatments of FFF printed ULTEM 9085 for surface and mechanical enhancement

Author

Farràs Tasias, Laia

Abstract

This Master's Thesis deals with the investigation of a thermal post-treatment that can be carried out on parts printed with Ultem 9085 to improve their mechanical properties. In particular, the improvement of the maximum bending stress is being worked on. On the other hand, the improvement of the surface roughness is also sought.
During this research, different combinations of time and temperature are studied following a mathematical method of experimentation through response surfaces that will allow finding an optimal treatment that enhances both properties without worsening any of them.
In addition, the influence of vacuum during these heat treatments is also investigated to see if the results obtained can be further improved by incorporating it. It also studies the variation in volume as a function of the specimen.
This thesis follows an experimental mathematical method to find the optimal treatment that will be the final result.

Director

Gómez Gras, Giovanni
Pérez Martínez, Marco Antonio

Degree

IQS SE - Master’s Degree in Industrial Engineering

Date

2021-07-15