Experimental study of the receptance and receptance curvature and its application for crack detection of a simply supported beam


Khoa Viet Nguyen, Mai Van Cao, Thao Thi Bich Dao, Quang Van Nguyen
Institute of Mechanics
Email: [email protected]
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Tóm tắt báo cáo

The receptance function is the important dynamic characteristic of structures which interrelates the harmonic excitation and the response of a structure in the frequency domain. In this work, the “receptance curvature” is defined as the second derivative of the receptance. It is well known that when there are cracks the mode shape of beam has sharp change at the crack position. Thus, the receptance curvature will also be changed at the crack position since the receptance curvature is a function of mode shape. In this work, the experiment has been carried out to measure the receptance and the receptance curvature. The purpose is to justify the formulas developed in the previous work. The experimental results are compated to the numerical simulation to show that the receptance curvature can be used for the crack detection of beam.

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Đánh giá:
Experimental study of the receptance and receptance curvature and its application for crack detection of a simply supported beam Report description: The receptance function is the important dynamic characteristic of structures which interrelates the harmonic excitation and the response of a structure in the frequency domain. In this work, the “receptance curvature” is defined as the second derivative of the receptance. It is well known that when there are cracks the mode shape of beam has sharp change at the crack position. Thus, the receptance curvature will also be changed at the crack position since the receptance curvature is a function of mode shape. In this work, the experiment has been carried out to measure the receptance and the receptance curvature. The purpose is to justify the formulas developed in the previous work. The experimental results are compated to the numerical simulation to show that the receptance curvature can be used for the crack detection of beam.


Experimental study of the receptance and receptance curvature and its application for crack detection of a simply supported beam


The receptance function is the important dynamic characteristic of structures which interrelates the harmonic excitation and the response of a structure in the frequency domain. In this work, the “receptance curvature” is defined as the second derivative of the receptance. It is well known that when there are cracks the mode shape of beam has sharp change at the crack position. Thus, the receptance curvature will also be changed at the crack position since the receptance curvature is a function of mode shape. In this work, the experiment has been carried out to measure the receptance and the receptance curvature. The purpose is to justify the formulas developed in the previous work. The experimental results are compated to the numerical simulation to show that the receptance curvature can be used for the crack detection of beam.
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