Abstract
Acrylic resin matrix composites with different contents of iron powder were fabricated under a magnetic field. Iron powder was arrayed parallel to the magnetic flux, and a distribution of powder was dependent on the magnetic field intensity. Mechanical properties of the composites were examined by four-point bending test. The bending strength and the deflection at fracture were improved in the direction of powder arrangement, and increased and then decreased with increasing powder content. The change of the strength with the powder content was explained by strengthening and weakening mechanisms. Young's modulus did not change with the powder content nor the magnetic filed intensity, but took a constant value in a range of the experiment.
