Impact damage in GFRP: New insights with infrared thermography

Meola, Carosena; Carlomagno, Giovanni Maria

doi:10.1016/j.compositesa.2010.09.002

Cited by 166 publications

(93 citation statements)

References 37 publications

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“…Actuality, the temperature decrease is inversely proportional to the impact energy [5], but its shape geometry depends essentially on the size of the hammer nose; on the other hand, the thermoelastic effect is caused by the material expansion, which, in turn depends on the surface bending that is proportional to the pushing object size. Conversely, from figures 3b, 4 and 5, and by considering also previously published data for glass reinforcing fibres [2,5], it is possible to demonstrate the strong influence of the type of reinforcing material as well the stacking sequence on the way the heat, produced by the impact energy, is dissipated.…”

mentioning

confidence: 92%

“…This, in turn, means that no important damage occurred, but only micro-cracks in the matrix. This may be regarded as the initiation phase of the impact damage [6][7][8], as, on the other hand, was already demonstrated through the use of infrared thermography within impact tests on GFRP specimens [2]. However, the presence of micro-cracks in the matrix does not alter the acoustic characteristics of the material.…”

Section: Fig 7 Piezo Sensor Signals During Impacts At A) 05j B) 2mentioning

confidence: 99%

“…In this context, infrared thermography represents a useful investigation tool. It was recently used by Meola and Carlomagno [2] who supplied information on onset and propagation of impact damage in Glass Fibres Reinforced Polymers (GFRP) through the analysis of thermoplastics effects developing under impact. Most recently, Meola et al [3] extended the application of infrared thermography to monitor different types of composites under impact tests.…”

Section: Introductionmentioning

confidence: 99%

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Monitoring of impact damage in Carbon Fibre Reinforced Polymers

Meola¹,

Carlomagno²,

Ricci³

2012

Proceedings of the 2012 International Conference on Quantitative InfraRed Thermography

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Infrared thermography is utilized to gain new information on onset and propagation of impact damage in Carbon Fibre Reinforced Polymers. Impact tests are carried out with a modified Charpy pendulum while the SC6000 camera views the specimen surface opposite to impact and records sequences of thermal images at 96 Hz. The same infrared camera, equipped with the lock-in option, is also used for non-destructive evaluation of the specimens before and after impact; results are shown as phase images. The elastic waves propagating from the impact are also recorded with piezo patches. A good agreement is found regarding the damage onset.

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mentioning

confidence: 92%

Section: Fig 7 Piezo Sensor Signals During Impacts At A) 05j B) 2mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Monitoring of impact damage in Carbon Fibre Reinforced Polymers

Meola¹,

Carlomagno²,

Ricci³

2012

Proceedings of the 2012 International Conference on Quantitative InfraRed Thermography

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“…For the case of one-dimensional heat conduction the representation is obtained by taking the one-sided (with respect to time) Laplace transform of the system in equations (2). Therefore the initial-boundary values problem is mapped into a boundary values problem that depends on the Laplace variable s. The general solution of the transformed temperature is…”

Section: Lumped Parameters Representation By Thermal Quadrupolesmentioning

confidence: 99%

“…Material, civil and aerospace engineering are some of the application areas of infrared thermography [1], [2], [3]. The inspection becomes more challenging for composite and multi-layer materials especially in the field of aerospace [4].…”

Section: Introductionmentioning

confidence: 99%

The design of infrared non-destructive testing for investigation multi-layer materials

Borazjani¹,

Spinello²,

Necsulescu³

2012

Proceedings of the 2012 International Conference on Quantitative InfraRed Thermography

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-The inverse heat conduction in a multi-material slab with periodic temperature excitation is investigated. We derive a polynomial relation to estimate the frequency of the periodic excitation as a function of the temperature amplitude at a given observation point in the material specimen. The formula includes characteristic geometric and material parameters of the system. The polynomial formula can be an effective design tool for quick frequency predetermination in the design of non-destructive testing experiments with infrared thermography. The convergence and accuracy of the formula are assessed by comparison with analytical thermal quadrupoles solution.

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Impact Damage

Chen¹,

Hodgkinson²

2011

Wiley Encyclopedia of Composites

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Composite structures are susceptible to impact damage. Here we discuss the damage of composites subjected to impact with different velocity and energy. We summarize the testing and evaluation methods of impact resistance and damage toleration and conclude the effects of composite fiber structures and material properties on impact damage. Finally, we discuss the theoretical and numerical analyses of impact damage on composites.

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Impact damage in GFRP: New insights with infrared thermography

Cited by 166 publications

References 37 publications

Monitoring of impact damage in Carbon Fibre Reinforced Polymers

Monitoring of impact damage in Carbon Fibre Reinforced Polymers

The design of infrared non-destructive testing for investigation multi-layer materials

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