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• W3185602014 endingPage "111177" @default.
• W3185602014 startingPage "111177" @default.
• W3185602014 abstract "This paper investigates the effect of loading rate on the mixed-mode I/II fracture behavior of PolymethylMethacrylate (PMMA). Experimental studies are performed using a novel fracture test specimen which has recently been developed, called short bend beam (SBB), in different loading rates of 1 mm/min, 20 mm/min, and 200 mm/min. Fracture test data are presented for pure mode I, pure mode II, and mixed-mode I/II conditions, thanks to the geometrical configuration offered by the specimen covering a full spectrum of mode mixities. Two fracture criteria including maximum tangential stress (MTS), and generalized maximum tangential stress (GMTS) are employed to predict the onset of fracture and the fracture initiation angle in different loading rates. The MTS criterion only considers the singular crack tip terms associated with the stress intensity factors (SIFs) in the solution while the GMTS includes the T-stress effect as well as the SIF-related terms. While enhanced predictions provided by the GMTS criterion, as compared to MTS results, reveals the significance of including the T-stress term in the theoretical calculations, the critical distance (rc) is also found as another major parameter playing an important role in the fracture behavior. It is shown that the size of rc decreases by increasing the loading rate. Therefore, for the first time, a variable and loading rate dependent rc value is utilized for employment of the GMTS criterion and it is demonstrated that considering variable critical distance can provide acceptable theoretical predictions for different loading rates." @default.
• W3185602014 created "2021-08-02" @default.
• W3185602014 creator A5002780446 @default.
• W3185602014 creator A5014708850 @default.
• W3185602014 creator A5049562329 @default.
• W3185602014 date "2021-12-01" @default.
• W3185602014 modified "2023-10-18" @default.
• W3185602014 title "Loading rate effect on mixed mode I/II brittle fracture behavior of PMMA using inclined cracked SBB specimen" @default.
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• W3185602014 doi "https://doi.org/10.1016/j.ijsolstr.2021.111177" @default.
• W3185602014 hasPublicationYear "2021" @default.
• W3185602014 type Work @default.

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