Damage and repair quantification in reinforced concrete beams using vibration data

Al-Ghalib, Ali; Mohammad, Fouad; Rahman, Mujib

doi:10.1201/b11570-86

Cited by 1 publication

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The flexural moment at section position x (i+1) of a beam using the particular curvature mode shape and the inertia loading condition is derived and given in the following Equation 3, [16,17]:…”

Section: Damage Quantification Via Stiffness Calculation 41 Theorymentioning

confidence: 99%

The use of modal parameters in structural health monitoring

Al-Ghalib

Mohammad

2018

MATEC Web Conf.

Self Cite

View full text Add to dashboard Cite

The concrete is liable to damage due to various stresses which compensate its adequacy and safety. The estimation of remaining strength in reinforced concrete beams when subjected to increased loading action utilizing vibration parameters is investigated. For this reason, three beams are loaded statically close to failure in various increasing load steps and then repaired. The beams are all of same dimensions, but are different in strength and range of defects introduced to each sample. Following each loading step, the experimental modal testing is utilized to collect the vibration parameters (natural frequency, damping ratio and mode shapes) of each beam when tested under free support boundary conditions. The use of vibration parameters for the purpose of damage identification are known to be an elaborate and lengthy process. On the other hand, they are successful for the structural health monitoring given that they are able to provide global on-site automated continuous monitoring. The paper features post analysis procedures for experimental modal measurements of three concrete samples to obtain and correlate the basic modal parameters (natural frequency, modal damping and mode shapes). The results of the extracted modal parameters and their combination are exploited in this research as quantified identification parameters. This paper concludes that modal parameters are successful in determining the location and quantity of structural degradation, when holistic approach considered through a system.

show abstract

Section: Damage Quantification Via Stiffness Calculation 41 Theorymentioning

confidence: 99%