Abstract
Steel fibre reinforced particle-filled polymer composite beams with different weight fractions of steel fibres were produced with varying notch-to-depth ratios a/ W=0.1, 0.2, 0.3 and 0.4. The specimens were investigated in Mode I fracture using three-point bending tests (TPB). Continuous fibre contents were used 1.5%, 3.0% and 4.5%, and polyester content was 16.5% of the total weight of the polymer composite system. The critical stress intensity factor was determined by using several methods: initial notch depth method, compliance method and J-integral method. The values of K IC obtained from these methods were compared.
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