Coupling infrared thermography and acoustic emission for damage study in CFRP composites

cuartas, Victor alfonso Munoz; Valès, Benjamin; Perrin, Marianne; Pastor, Marie-Laetitia; Welemane, Hélène; Cantarel, Arthur; Karama, Moussa

doi:10.21611/qirt.2014.128

Cited by 3 publications

(2 citation statements)

References 13 publications

(21 reference statements)

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Section: Introductionmentioning

confidence: 99%

“…There are other valuable studies wherein damage accumulation in carbon fiber-reinforced laminates have been reported using structural health monitoring techniques such as Infrared thermography (IRT), Digital image correlation (DIC), and Acoustic emission (AE). [18][19][20][21] The size effect is a crucial parameter that greatly impacts the overall strength of the structure and affects the structural integrity and damage accumulation. An increment in the laminate thickness by the addition of further lamina increases the overall thickness and volume of the structure, which signifies that the area under stress has been increased.…”

Section: Introductionmentioning

confidence: 99%

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An experimental multi-instrumental approach to understand the size effect on the damage propagation of plain-woven CFRP composites under shear loading

Ali

Khan

Tabrizi

et al. 2022

Journal of Composite Materials

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Damage propagation and failure mechanisms in woven carbon fiber composites are complex due to their anisotropic nature and are affected by the percentage of constituents of the composite materials named fiber, matrix, and void. The “size effect” that relies on these parameters can be influenced by the volume fraction percentages of these constituents and composite manufacturing parameters. This research introduces a multi-instrumental structural health monitoring approach to understand damage progression due to the size effect under the Iosipescu configuration. Acoustic emission (AE) signals are classified via a K-means clustering algorithm to distinguish the damage activities based on their frequencies. It is shown that both size effect and void content are relatable based on cumulative AE energy jumps attributed to the accumulation of micro-damages inside these laminates. The thermal variations observed by passive infrared thermography are associated with the nonlinear response of the shear behavior. The outcomes of the thermal analysis are depicted to show the relationship between damage progress and laminate thickness. The digital image correlation analysis is performed to measure the full-field strain measurement during the testing. The correspondence of material thickness with elastic shear behavior is investigated via a comparison of shear strain maps.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An experimental multi-instrumental approach to understand the size effect on the damage propagation of plain-woven CFRP composites under shear loading

Ali

Khan

Tabrizi

et al. 2022

Journal of Composite Materials

View full text Add to dashboard Cite

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A novel damage evaluation of CFRPs under mode-I loading by using multi-instrument structural health monitoring methods

Akgun

Senol

Kilic

et al. 2023

Engineering Fracture Mechanics

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Passive Thermography for Detection of Damaging Events during Quasi-Static Tensile Testing

Popow

Gurka

2019

KEM

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In order to determine the material properties of anisotropic continuous fiber-reinforced polymers, such as stiffness and strength, quasi-static tensile tests are carried out, in which the test specimen is subjected to a controlled load until failure. In opposite to ductile metals, exact localization of the failure on the test specimen or observation of the initial or final failure in time is not possible because of the brittle failure mechanism. The sample often breaks down into many small fragments. In order to get a deeper understanding of the failure behavior and to optimize the material and the design of the specimen, a characterization of the damage progress under load by passive thermography was implemented. This is a suitable method for the detection of near-surface defects and provides very promising results, especially in combination with sophisticated evaluation methods of active thermography. An important influencing factor is the analysis of the amount of energy released during a micro-damaging event. In this paper, we show an approach to increase the contrast of single damaging events and a possibility to visualize the damaging progress, especially for near-surface defects. The measurements were realized with continuously fiber-reinforced materials.

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Coupling infrared thermography and acoustic emission for damage study in CFRP composites

Cited by 3 publications

References 13 publications

An experimental multi-instrumental approach to understand the size effect on the damage propagation of plain-woven CFRP composites under shear loading

An experimental multi-instrumental approach to understand the size effect on the damage propagation of plain-woven CFRP composites under shear loading

A novel damage evaluation of CFRPs under mode-I loading by using multi-instrument structural health monitoring methods

Passive Thermography for Detection of Damaging Events during Quasi-Static Tensile Testing

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