Material Testing Device Using Magnetic Levitation Mechanism

This paper describes non-contact material testing devices using magnetic levitation mechanism, in which a specimen can be tested in tension, compression, bending or torsion while the specimen and few parts are being levitated. We mainly focus on the mechanism, control, and experimental results of the tension testing device and bending testing device. The structures of these devices are introduced about material testing methods. For material testing, additional control mechanisms are required except for ordinal levitation control mechanism. Tension testing device and bending testing device have corresponding mechanism respectively. Experimental examinations were performed to examine the feasibility, stability, and robustness under the maxim tension force and bending force. Finally, they demonstrated that the levitation control system has good stability and robustness under the maximum tension force and bending force.