Impedance-based health monitoring and mechanical testing of structures

Lizeth Vargas Palomino , Jose dos Reis Vieira de Moura Jr. , Karina Mayumi Tsuruta , Domingos Alves Rade , Valder Steffen Jr.

Abstract

The mechanical properties obtained from mechanical tests, such as tensile, buckling, impact and fatigue tests, are largely applied to several materials and are used today for preliminary studies for the investigation of a desired element in a structure and prediction of its behavior in use. This contribution focus on two widely used different tests: tensile and fatigue tests. Small PZT (Lead Titanate Zirconate) patches are bonded on the surface of test samples for impedance-based health monitoring purposes. Together with these two tests, the electromechanical impedance technique was performed by using aluminum test samples similar to those used in the aeronautical industry. The results obtained both from tensile and fatigue tests were compared with the impedance signatures. Finally, statistical meta-models were built to investigate the possibility of determining the state of the structure from the impedance signatures.

Key Words

structure health monitoring; electromechanical impedance; tensile tests; fatigue tests; statistical meta-modeling.

Address

Lizeth Vargas Palomino — School of Mechanical Engineering, Federal University of Uberlandia, Campus Santa Monica, Avenida Joao Naves de Avila 2121, Bloco 1M, 38400-902 Uberlandia, Brazil
Jose dos Reis Vieira de Moura Jr. — School of Mechanical Engineering, Federal University of Uberlandia, Campus Santa Monica, Avenida Joao Naves de Avila 2121, Bloco 1M, 38400-902 Uberlandia, Brazil
Karina Mayumi Tsuruta — School of Mechanical Engineering, Federal University of Uberlandia, Campus Santa Monica, Avenida Joao Naves de Avila 2121, Bloco 1M, 38400-902 Uberlandia, Brazil
Domingos Alves Rade — School of Mechanical Engineering, Federal University of Uberlandia, Campus Santa Monica, Avenida Joao Naves de Avila 2121, Bloco 1M, 38400-902 Uberlandia, Brazil
Valder Steffen Jr. — School of Mechanical Engineering, Federal University of Uberlandia, Campus Santa Monica, Avenida Joao Naves de Avila 2121, Bloco 1M, 38400-902 Uberlandia, Brazil

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