Bending properties and failure behavior of 3D printed fiber reinforced resin T‐beam

Abstract Fiber‐reinforced resin T‐beams have a wide range of applications. The forming of T‐beams based on the fused deposition process provides a new method for its manufacture. This paper studied the key process parameters of 3D printing continuous fiber and short fiber reinforced resin T‐beams. The results show that continuous fiber reinforced resin T‐beams with similar fiber volume fractions have better bending performance than shorter fiber reinforced resin T‐beams. When the printing layer thickness is 0.7 mm, 0.8 mm and 0.9 mm, the flexural strength and modulus of the continuous fiber reinforced resin T‐beam are obviously lower with the increase of the layer thickness. Under the printing path 0°, ±45°, 90°, the short fiber reinforced resin T‐beam with the 0°path has the highest flexural strength and modulus. Furthermore, T‐beam with different printing path have significantly different bending failure behavior. The work provided a new approach to the production of beam structures of the actual engineering application.