Abstract
Textile glass fiber reinforced particle-filled polymer composite beams which have different weight fractions of glass fibers were produced with varying notch-to-depth ratios. The mechanical properties of specimens were found. The specimens were investigated in Mode I and Mode III fracture behavior using three-point bending (TPB) tests. Textile glass fiber contents used were 1, 2 and 3%, and polyester content was 16.5% of the total weight of the polymer composite system. The critical stress intensity factor was determined by using a compliance technique, the initial notch depth method and the J-integral method. Effects of crack angles on fracture behavior were also studied. The specimens, which have an inclined crack at an angle θ to the axis of the specimens, were used to carry out the tests. The specimens were tested with inclination angles 30°, 45°, 60° and 75°. The results are compared with the values of KICobtained using conventional (θ = 90°) specimens. In addition, J-integrals were also determined.
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