Dynamic tensile test method for elastic modulus and Poisson ratio of silicon steel thin strip

The invention discloses a dynamic tensile testing method for elastic modulus and Poisson ratio of a silicon steel thin strip, and relates to the field of mechanical property testing. The invention relates to a dynamic tensile test method for elastic modulus and Poisson's ratio of a silicon steel thin strip. The method comprises the following steps: pasting bidirectional resistance strain gauges on two sides of a tested sample, and pasting wiring terminals arranged along the length direction and the width direction of the tested sample on the bidirectional resistance strain gauges; the method comprises the following steps: connecting two anti-lateral bending guide plates to two sides of a tested sample, carrying out a dynamic cyclic tensile test by taking a preset value of the yield strength Rp0.2 of the tested sample as a stress peak-valley value, and collecting axial stress change data corresponding to a complete waveform in a range from a first period to a 100th period by adopting a sine wave waveform, the