Issue 53

A. Desai et alii, Frattura ed Integrità Strutturale, 53 (2020) 426-433; DOI: 10.3221/IGF-ESIS.53.33 432 Figure 9: Fracture behavior of laminates at different loading position Figure 10: Fiber breakage seen using optical microscope Mode mixity ( Me ) is calculated for different s/d ratios for FPB specimen [2] using Eqn. (7). Tab. 3 shows values for mode mixity for s/d ratios. 2 arctan I e II K M K               (7) Table 3: Mode-mixity values for various s/d ratios C ONCLUSION he major conclusions in this investigation is that, the bearing load capacity for unidirectional (0/90)° fiber oriented laminate is more compared to 0° and (0/45)° unidirectional fiber oriented laminate for asymmetric Four Point Bend Mixed mode(I/II) fracture specimen. Consequently, the translaminar fracture toughness for (0/90)° is more compared to other fiber oriented laminates. In addition, Fabrication process for (0/90)° fiber oriented laminate using hand layup technique is simple compared to (0/45)° fiber oriented laminate. Hence, (0/90)° fiber oriented laminate is preferable for industrial application. s/d Mode-mixity M e 0 0 0.2 0.69 0.4 0.835 0.6 0.888 0.8 0.916 1 1 T Mode-II Mode-I Mixed Modes Fiber breakage