Square-Structure Estimation of Bolt Fastening Conditions with Using PZT Patches

Abstract:

This paper describes a primary study for a new method of enhancing measurement with using an impedance analysis method that is applied to structural health monitoring. The goal of this research is to show basic information that is used to evaluate the structural health condition with using piezoelectric sensors. We present a study for the development of a practical and quantitative technique for the assessment of the structural health condition with using a piezoelectric impedance-based technique that is associated with longitudinal wave propagation. The natural frequency has a tendency of frequency shifting with respect to the hole size that corresponds to the real structure’s crack size. To numerically estimate the damage condition, we suggest the Cov (Covariance) and CC (Correlation Coefficient) evaluation methods.

• Periodical: Key Engineering Materials (Volumes 353-358)
• Pages: 2812-2816
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.353-358.2812
• Online since: September 2007
• Authors: Yong Hong, Byeong Hee Han, Dong Pyo Hong, Sung Mo Yang, Young Moon Kim, Kyeong Suk Kim
• Keywords: Crack, Damage Assessment Indices, Piezoelectric Impedance Response, PZT Patches, Structural Health Monitoring (SHM)

References

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[11] 5 12.

[12] 5 13.

[13] 5 3 3- a 3- b 6 6- a 6- b 9 9- a 9- b Fig. 6 Cov of the square structure whit a line crack.

84.

88.

92.

96 1 3 3- a 3- b 6 6- a 6- b 9 9- a 9- b Fig. 7 CC of the square structure whit a line crack 22 23 24 25 26 27 3 3- a 3- b 6 6- a 6- b 9 9- a 9- b Fig. 8 Cov of the square structure with a hole crack.

85.

9.

95 1 3 3- a 3- b 6 6- a 6- b 9 9- a 9- b Fig. 9 CC of the square structure with a hole crack.

[3] Victor G., Andrei N. Z. and Jing J. B.: Piezoelectric Wafer Embedded Active Sensors for Aging Aircraft Structural Health Monitoring, Structural Health Monitoring, Sage Publications, (2002).

DOI: 10.1177/147592170200100104

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