Surface characteristics investigation of 3D-printed PET-G plates during CO2 laser cutting
Date
2022Language
en
Sujet
Résumé
This study investigates the influence of the stand-off distance (SoD), laser speed (LS) and laser power (LP) on kerf geometry (upper width Wu, down width Wd and kerf angle KA) and mean surface roughness (Ra) during CO2 laser cutting of 3D-Printed Polyethylene-Terephthalate-Glycol (PET-G) thin plates. A full factorial design is implemented, having two levels for SoD and three levels for LS and four levels for LP, resulting in twenty-four (24) cuts. The specimens were manufactured with the Fused Filament Fabrication (FFF) process and had a thickness of 4 mm. First, the Wu, Wd, and KA parameters were measured. Then, the specimens were cut into 24 smaller parts, and the Ra of the processed surfaces was measured. After analyzing the results using descriptive statistical analysis and contour plots corresponding to the two objectives of KA and Ra, a feed-forward and backpropagation neural network (FFBP-NN) was applied. After a series of subsequent training, it was found that the 3-10-2 NN architecture was quite efficient in explaining the variation in terms of the responses, thus having merit in practical applications related to laser cutting. The LC surfaces showed much better Ra (7.2-12 μm) than those in the literature for FFF parts surfaces without post-processing (10.3-30 μm). © 2021 Taylor & Francis.
Collections
Related items
Showing items related by title, author, creator and subject.
-
Laser Treatment of Benign Prostatic Obstruction: Basics and Physical Differences
Bach, T.; Muschter, R.; Sroka, R.; Gravas, S.; Skolarikos, A.; Herrmann, T. R. W.; Bayer, T.; Knoll, T.; Abbou, C. C.; Janetschek, G.; Bachmann, A.; Rassweiler, J. J. (2012)Context: Laser treatment of benign prostatic obstruction (BPO) has become more prevalent in recent years. Although multiple surgical approaches exist, there is confusion about laser-tissue interaction, especially in terms ... -
Critical review of lasers in benign prostatic hyperplasia (BPH)
Gravas, S.; Bachmann, A.; Reich, O.; Roehrborn, C. G.; Gilling, P. J.; De La Rosette, J. (2011)Laser technology has been applied to treat LUTS secondary to BPH for > 15 years. Some of the early approaches failed to fulfil our expectations and have been abandoned, but technological advancements and growing clinical ... -
Investigation of locked operation in a system of two passively mode-locked semiconductor lasers under weak lateral coupling
Simos I., Simos C., Stathopoulos N.A. (2022)We study theoretically the operation of two semiconductor passively mode-locked lasers laterally coupled through evanescent fields. The investigation is carried out using a time domain traveling wave numerical model for ...