Abstract: The health care function of magnetic fabric acts on human body through its surface magnetic field. Its effect is affected by the intensity, direction and distribution of the surface magnetic field together. This study has explored the surface magnetic field of double magnetic fabrics and the fabrics in different configuration methods between magnetic fabric and non-magnetic fabric. In addition, MATLAB has been used to draw the distribution of surface magnetic induction intensity into three-dimensional graphics visually. The results of study show that the surface magnetic field strength of magnetic fabric is weak and it is usually between 0.02mT-0.05mT. The distribution is extremely uneven and varies in different regions. It has also been found that the surface magnetic field intensity of double magnetic fabric increases significantly while the differences in regions can increase or decrease randomly. If magnetic fabric covered by non-magnetic fabric or placed between layers of non-magnetic fabric, the surface magnetic field intensity weakens significantly while the differences in regions decrease. The weakening extent mainly depends on the thickness of non-magnetic fabric. The surface magnetic field will not change when non-magnetic fabric covered by magnetic fabric.

Key words: magnetic knitted fabric, surface magnetic field, magnetic field distribution, visualization