Determining the stress state of a stretched rod from its measured magnetic characteristics

È. S. Gorkunov, I. G. Emel'ynov, S. Yu. Mitropol'skaya

Institute of Machine Sciences, Ural Division, Russian Academy of Science, Ekaterinburg, 620219, Russia

Abstract: Stress-strain diagrams and coercive force-strain diagrams for carbon steel samples under uniaxial tension were obtained experimentally during loading and after unloading. These diagrams were used to develop a procedure for determining the stress acting in structural members from the value of the coercive force in the loaded state. A method is proposed to estimate the previous maximum stress from the values of the coercive force measured in the unloaded state.

Keywords: witness sample, coercive force, stress state.

UDC: 539.3

Received: 30.07.2007

 English version: Journal of Applied Mechanics and Technical Physics, 2008, 49:5, 877–882

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