Electromagnetic multiaxial fatigue testing machine

Provided is an electromagnetic multiaxial fatigue testing machine, comprising a test specimen fixing platform (1) and an electromagnetic loading mechanism on a machine frame (2). The electromagnetic loading mechanism comprises a first loading device for bend loading and a second loading device for axial and torsional loading. The first loading device comprises a first permanent magnet (15) and a first electromagnet (6) having a direction of the magnetic force therebetween axially orthogonal to a test specimen (39). The second loading device comprises a second permanent magnet (16) and a second electromagnet (7) mounted on a swing pair and having a direction of the magnetic force therebetween axially parallel to the test specimen (39). The present invention uses the electromagnetic principle for loading, and therefore no mechanical friction occurs. Furthermore, different loading modes can be selected according to the actual force requirement of the test specimen (39) to perform a uniaxial or multiaxial fatigue test on the specimen (39), thereby improving the test efficiency and reducing noise and cost of the test.