Fracture assessment of polymethyl methacrylate using sharp notched disc bend specimens under mixed mode I + III loading
- Authors: Aliha M.R.1, Berto F.2,3, Bahmani A.1, Akhondi S.1, Barnoush A.3
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Affiliations:
- Welding and Joining Research Center, School of Industrial Engineering
- Department of Management and Engineering
- Department of Engineering Design and Materials
- Issue: Vol 19, No 4 (2016)
- Pages: 355-364
- Section: Article
- URL: https://journals.rcsi.science/1029-9599/article/view/191253
- DOI: https://doi.org/10.1134/S1029959916040020
- ID: 191253
Cite item
Abstract
Mixed mode I/III behavior of Perspex (polymethyl methacrylate (PMMA)) is studied experimentally and theoretically in this research using a new and simple laboratory test configuration. The specimen is a circular disc containing a sharp V-notch along the diameter that is loaded by the conventional three-point bend fixture. The critical values of notch stress intensity factors (KIV and KIIIV) were obtained for the whole combinations of modes I and III simply by changing the notch inclination angle relative to the loading rollers. The value of notch fracture toughness under pure or dominantly tension loads was greater than its corresponding value under mode III or dominantly torsion loads. The experimental results were also predicted very well by employing the local strain energy density (SED) criterion.
About the authors
M. R. M. Aliha
Welding and Joining Research Center, School of Industrial Engineering
Author for correspondence.
Email: m_aliha@yahoo.com
Iran, Islamic Republic of, Narmak, Tehran, 16846-13114
F. Berto
Department of Management and Engineering; Department of Engineering Design and Materials
Email: m_aliha@yahoo.com
Italy, Vicenza, 36100; Trondheim, 7491
A. Bahmani
Welding and Joining Research Center, School of Industrial Engineering
Email: m_aliha@yahoo.com
Iran, Islamic Republic of, Narmak, Tehran, 16846-13114
Sh. Akhondi
Welding and Joining Research Center, School of Industrial Engineering
Email: m_aliha@yahoo.com
Iran, Islamic Republic of, Narmak, Tehran, 16846-13114
A. Barnoush
Department of Engineering Design and Materials
Email: m_aliha@yahoo.com
Norway, Trondheim, 7491