PSI - Issue 45

Quan Jiang et al. / Procedia Structural Integrity 45 (2023) 117–124 / Structural Integrity Procedia 00 (2022) 000 – 000

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5.2. Notched impact strength of SGFRTPs Based on the discussion presented above, we assume for these analyses that most of the energy dissipated in the Charpy impact test comes from fiber pull-out. The amount of energy dissipated by this mechanism is modeled using IFSS. Figure 8 shows the energy dissipation region during the Charpy impact test. The energy dissipation attributable to fiber pull-out occurs only in the region where the fiber is pulled out. Therefore, the energy dissipating region V is expressed as equation (6).

Fig. 5. Phase contrast microscope observation results (a) PP/GF10wt%; (b) PP/GF20wt%; (c) PP/GF30wt%; (d) PP/MAHPP/GF10wt%; (e) PP/MAHPP/GF20wt%; (f) PP/MAHPP/GF30wt%; (g) PS/GF10wt%; (h) PS/GF20wt%; (i) PS/GF30wt%; (j) PS/MAHPS/GF10wt%; (k) PS/MAHPS/GF20wt%; (l) PS/MAHPS/GF30wt%. Arrows in figures indicate the notch tip.

Fig. 6. Digital microscopic observation results (a) PP/GF10wt%; (b) PP/GF20wt%; (c) PP/GF30wt%; (d) PP/MAHPP/GF10wt%; (e) PP/MAHPP/GF20wt%; (f) PP/MAHPP/GF30wt%; (g) PS/GF10wt%; (h) PS/GF20wt%; (i) PS/GF30wt%; (j) PS/MAHPS/GF10wt%; (k) PS/MAHPS/GF20wt%; (l) PS/MAHPS/GF30wt%.