Surface characteristics and mechanical properties of high-strength steel wires in corrosive conditions

Yang Xu; Shunlong Li; Hui Li; Weiming Yan

doi:10.1117/12.2009530

19 April 2013 Surface characteristics and mechanical properties of high-strength steel wires in corrosive conditions

Yang Xu, Shunlong Li, Hui Li, Weiming Yan

Proceedings Volume 8692, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013; 869209 (2013) https://doi.org/10.1117/12.2009530
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2013, San Diego, California, United States

Abstract

Cables are always a critical and vulnerable type of structural components in a long-span cable-stayed bridge in normal operation conditions. This paper presents the surface characteristics and mechanical performance of high-strength steel wires in simulated corrosive conditions. Four stress level (0MPa, 300MPa, 400MPa and 500MPa) steel wires were placed under nine different corrosive exposure periods based on the Salt Spray Test Standards ISO 9227:1990. The geometric feathers of the corroded steel wire surface were illustrated by using fractal dimension analysis. The mechanical performance index including yielding strength, ultimate strength and elastic modulus at different periods and stress levels were tested. The uniform and pitting corrosion depth prediction model, strength degradation prediction model as well as the relationship between strength degradation probability distribution and corrosion crack depth would be established in this study.

Citation Download Citation

Yang Xu, Shunlong Li, Hui Li, and Weiming Yan "Surface characteristics and mechanical properties of high-strength steel wires in corrosive conditions", Proc. SPIE 8692, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013, 869209 (19 April 2013); https://doi.org/10.1117/12.2009530

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