Naslov
Digital light processing in photoelastic models production for material behavior modeling

Autori
Dundović, Maja ; Marković, Kristina ; Franulović, Marina ; Vrcan, Željko

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
ICSID 2020 - 4th International Conference on Structural Integrity and Durability - Book of Abstracts / Božić, Željko - Zagreb : Fakultet strojarstva i brodogradnje Sveučilišta u Zagrebu, 2020, 1-4

Skup
4th International Conference on Structural Integrity and Durability (ICSID)

Mjesto i datum
Dubrovnik, Hrvatska, 15.09.2020. - 18.09.2020

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Photoelasticity, Digital Light Processing (DLP), pure bending test, material behavior modeling

Sažetak
Material behavior modeling for additive manufacturing (AM) technology represents a challenge because the manufacturing process and post-processing parameters strongly influence the me-chanical properties of the part. Photoelasticity is a well-known full-field optical technique used for direct stress/strain determination and design evaluation purposes. A novel use of digital light processing (DLP), a form of vat polymerization AM technologies in photoelastic specimen pro-duction is discussed in this paper. A number of preliminary experiments were undertaken to ad-dress critical issues related to DLP process. It was concluded that the UV exposure time, de-pendent mostly on layer thickness, and orientation are the main factors affecting the mechanical properties and the accuracy of the printed samples. Pure bending test was used to determine me-chanical and photoelastic properties of a commercially available acrylic-based photopolymer, not previously reported in the literature. The rectangular beam sample used was built in vertical layer orientation and fully-cured. The estimated value of Young’s modulus was within the ex-pected range for acrylics, and the photoelastic constant obtained provides increased confidence in the investigated acrylic polymer for photoelastic stress analysis purposes, and consequently for validation of computer-based models

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA