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مقاله تحقیق پروژه دانش آموزی و دانشجوییDAMPING: A SENSITIVE STRUCTURAL PROPERTY FOR DAMAGE DETECTION
DAMPING: A SENSITIVE STRUCTURAL PROPERTY FOR DAMAGE DETECTION
Data from vibration measurements opens a way to damage assessment by correlatingchanges in system dynamic parameters with damage indicators. Most methods proposed in theliterature are based on the measurement of natural frequencies or modal shapes and modelling damageas local reduction in structural stiffness. In some particular applications these methods, however, haveseveral practical limitations on account of their low sensitivity to damage. This paper shows thatdamping can be used as a ...
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Time reversal of guided waves for damage detection in rebar-reinforced concrete beams
Time reversal of guided waves for damage detection in rebar-reinforced concrete beams
Propagation properties of ultrasonic guided waves in rebar-reinforced concrete beams were investigated in this study for the purpose of damage detection. Rectangular PZT patches were attached at both exposed ends of the rebar to monitor wave transmission along the rebar with and without simulated corrosion in the form of partial material removal of the rebar. Experimental testing demonstrated that the presence of concrete had a significant influence on the propagation of guided waves along the ...
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A Non-destructive Damage Detection Method for Reinforced Concrete Structures Based on Modal Strain Energy
A Non-destructive Damage Detection Method for Reinforced Concrete Structures Based on Modal Strain Energy
In recent years, much research and development has been carried out on the use of vibration characteristics to detect structural damage in various types of structures. Being a type of the widely developed methods, the vibrations based damage detection methods, in particular modal based methods, are found to be promising in assessing the ldquo;health rdquo; condition of a structure in terms of locating and quantifying damage. However, despite of advances in vibration based damage detection ...
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