Damage detection in cantilever beams using spatial Fourier coefficients of augmented modes

Ganguli, Ranjan; Gouravaraju, Saipraneeth

doi:10.1177/0954406215616419

Cited by 5 publications

(2 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Space Fourier analysis, fractal dimension, and other new damage theories are also successfully applied in the field of damage identification. 20–22 Therefore, based on this research, this paper will focus on the application of operational modal analysis technology and flexibility damage indicators for damage identification in a thin plate structure.…”

Section: Introductionmentioning

confidence: 99%

A damage identification method for a thin plate structure based on PVDF sensors and strain mode

Cui

Peng

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

Damage identification methods for engineering structures based on vibration parameters have the advantages of easy detection and high precision; however, structural strain information is more sensitive to structural damage than displacement information. Traditional resistance strain sensors have low accuracy and poor stability when measuring structural strains. Therefore, this paper uses a highly sensitive polyvinylidene fluoride dynamic strain sensor to identify structural damage in a thin plate. The polyvinylidene fluoride sensor is used to obtain structural strain response information, and structural modal parameters are identified using operational modal identification methods based on the natural excitation technique and the eigensystem realization algorithm. This paper uses a damage index based on mode shape and flexibility. A new damage index based on the LU decomposition of the flexibility matrix is used to identify the damage of the thin plate structure. The effectiveness of the modal identification methods and the new damage index is validated via an elastic thin plate experiment. The results show that the modal identification method and the new damage index proposed in this paper can identify damage in a thin plate structure. Sensor comparison experiments also show that compared with a resistance strain sensor, the polyvinylidene fluoride sensor has higher damage sensitivity, better damage recognition and the ability to recognize farther from the sensor.

show abstract

Section: Introductionmentioning

confidence: 99%

A damage identification method for a thin plate structure based on PVDF sensors and strain mode

Cui

Peng

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

show abstract

“…17 Rus et al 18 used this method in composite structure to detect delamination from static data. Furthermore, several techniques have been proposed for the damage detection in structures, such as Fourier analysis, 19 the spectral element method, 20,21 and the time series analysis. 22 The effectiveness of these methods has been studied with numerical and experimental investigations especially for simple applications.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of damage detection in plate-like structure using combined energetic approaches

Samet

Hui

Souf

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

In this paper, an experimental investigation of damage detection in plate-like structure using energetics approaches is presented. Two energetics approaches are developed to localize the damage in structure at low-, medium-, and high-frequency range. The first one is the inverse simplified energy method, which is used for the identification of the excitation source and the detection of damage in medium and high frequencies. The second one is the curvature method, which is used for the damage detection in the low and medium frequencies. The main novelty of this paper is to combine these energetics approaches in order to localize the damage in all frequency bands. Experimental examples with different characteristics of plate were performed for the validation purpose. Results show that the presented methods can detect precisely the defects location in plate-like structures.

show abstract

Influence of Crack Inclination Angle on Isotropic Cracked Cantilever Beam

Soliman

2020

J Fail. Anal. and Preven.

View full text Add to dashboard Cite

Damage detection in cantilever beams using spatial Fourier coefficients of augmented modes

Cited by 5 publications

References 23 publications

A damage identification method for a thin plate structure based on PVDF sensors and strain mode

A damage identification method for a thin plate structure based on PVDF sensors and strain mode

Experimental investigation of damage detection in plate-like structure using combined energetic approaches

Influence of Crack Inclination Angle on Isotropic Cracked Cantilever Beam

Contact Info

Product

Resources

About