The objective of this paper is to examine experimentally the applicability of a structural
health monitoring system employing TRIP (transformation induced plasticity) steels. The
capability of TRIP steels in the assessment of structural performance degradation was
evaluated through material tests. The magnetic characteristics of TRIP steels under tensile
and compressive uniaxial loadings were investigated through the measurement of induced
voltage. The stress–strain hysteresis and the associated magnetic alternation of TRIP
steels were identified. Furthermore, plate-bending tests and beam-bending tests
were carried out in order to study the damage-detection characteristics. As the
conclusion, the dual function of TRIP steels, serving as both a high ductility
load-carrying member and a sensor to monitor damage accumulation, was confirmed.
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