PSI - Issue 3
F. Berto et al. / Procedia Structural Integrity 3 (2017) 144–152
151
8
F. Berto et al. / Structural Integrity Procedia 00 (2017) 000–000
paper represents an entry level approach for the determination of the SED parameters for these foams, it’s necessary further studies and tests.
Fig. 4. Ratio between the predictions of maximum loads and experimental loads using the new values of critical energy density.
Acknowledgments The experimental results presented here were performed under the Grant of the Romanian National Authority for Scientific Research, CNCS-UEFISCDI, project PN-II-ID-PCE-2011-3-0456, contract number 172/2011. Mr. Alberto Piccotin was supported by ERASMUS program to carry on a research stage at University Politehnica
Timisoara. References
Ashby, M.F., 2005. Cellular solids – scaling of proprieties, in: M. Scheffler, P. Colombo (Eds.), Cellular Ceramics, Structure, Manufacturing, Properties and Applications, Wiley-VCH Verlag Gmbh & Co., pp. 3–17. ASTM D 1622-08, Standard Test Method for Apparent Density of Rigid Cellular Plastics. ASTM E-1876-01: Standard Test Method for Dynamic Young’s Modulus, Shear Modulus, and Poisson’s Ratio by Impulse Excitation Technique of Vibration. Ayatollahi, M.R., Torabi, A.R., 2009. A criterion for brittle fracture in U-notched components under mixed-mode loading. Engineering Fracture Mechanics 76, 1883– 1896. Ayatollahi, M.R., Aliha, M.R.M., Saghafi, H., 2011. An improved semi-circular bend specimen for investigating mixed mode brittle fracture. Engineering Fracture Mechanics 78, 110–123. Ayatollahi, M.R., Razavi, S.M.J., Rashidi Moghaddam, M., Berto, F., 2015. Mode I fracture analysis of Polymethylmetacrylate using modified energy—based models. Physical Mesomechanics 18(5), 53-62. Ayatollahi, M.R., Rashidi Moghaddam, M., Razavi, S.M.J., Berto, F., 2016. Geometry effects on fracture trajectory of PMMA samples under pure mode-I loading. Engineering Fracture Mechanics 163, 449–461. Ayatollahi, M.R., Razavi, S.M.J., Sommitsch, C., Moser, C., 2017. Fatigue life extension by crack repair using double stop-hole technique, Materials Science Forum 879, 3-8. Berto, F., Lazzarin, P., Gómez, F.J., Elices, M., 2007. Fracture assessment of U-notches under mixed mode loading: two procedures based on the ‘equivalent local mode I’ concept. International Journal of Fracture 148, 415-433. Berto, F., Lazzarin, P., 2009. A review of the volume-based strain energy density approach applied to V-notches and welded structures. Theoretical and Applied Fracture Mechanics 52, 183-194. EN ISO 527:2012, Plastics-Determination of Tensile Properties. Gibson, L.J., Ashby, M.F., 1997. Cellular Solids, Structure and Properties, second ed., Cambridge University Press. Gómez, F.J., Elices, M., Berto, F., Lazzarin, P., 2007. Local strain energy to assess the static failure of U-notches in plates under mixed mode loading. International Journal of Fracture 145, 29-45. Kipp, M.E., Sih, G.C., 1975. The strain energy density failure criterion applied to notched elastic solids. International Journal of Solids and Structures 11, 153-173. Lazzarin, P., Zambardi, R., 2001. A finite-volume-energy based approach to predict the static and fatigue behavior of components with sharp V shaped notches. International Journal of Fracture, 112, 275- 298. Lazzarin, P., Berto, F., 2005. Some expressions for the strain energy in a finite volume surrounding the root of blunt V-notches. International Journal of Fracture 135, 161-185. Lazzarin, P., Filippi, S., 2006. A generalized stress intensity factor to be applied to rounded V-shaped notches. International Journal of Solids and Structures 43, 2461–2478.
Made with FlippingBook - professional solution for displaying marketing and sales documents online