Analyzing the Influence of the Stimulation Duration in the Transient Thermal Test – Experimental and FEM Simulation

Silva, António Ramos; Vaz, Mário; Leite, Sofia; Mendes, Joaquim

doi:10.1007/s40799-021-00538-1

Cited by 4 publications

(2 citation statements)

References 17 publications

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“…These measures can be used to obtain properties for numeric simulations, or directly used in research or industrial applications. The use of image techniques has grown fast over the past several decades due to the progress in the digital camera and infrared camera performance and increased computational power (Ramos Silva et al, 2019Silva et al, , 2022. Using image (or field) nature techniques enables the identification of strain concentrations and damage more accurately.…”

Section: Introductionmentioning

confidence: 99%

Temperature patterns obtained in thermoelastic stress test at different frequencies, a FEM approach

Duarte

Neves

Silva

2023

IJSI

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PurposeThe goal of this work is to create a computational finite element model to perform thermoelastic stress analysis (TSA) with the usage of a non-ideal load frequency, containing the effects of the material thermal properties.Design/methodology/approachThroughout this document, the methodology of the model is presented first, followed by the procedure and results. The last part is reserved to results, discussion and conclusions.FindingsThis work had the main goal to create a model to perform TSA with the usage of non-ideal loading frequencies, considering the materials’ thermal properties. Loading frequencies out of the ideal range were applied and the model showed capable of good results. The created model reproduced acceptably the TSA, with the desired conditions.Originality/valueThis work creates a model to perform TSA with the usage of non-ideal loading frequencies, considering the materials’ thermal properties.

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Section: Introductionmentioning

confidence: 99%

Temperature patterns obtained in thermoelastic stress test at different frequencies, a FEM approach

Duarte

Neves

Silva

2023

IJSI

Self Cite

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“…The radiated heat from the sample is small and is usually discarded. With the increase in temperature, the heat loss by convection will also increase, and vice versa, meaning the heat will not travel from the surface to the interior of the sample but will travel from the inside to the outside of the sample [ 3 ]. Less energy (shorter stimulation) results in less thermal variations and less heat exchange by convection since the temperature difference is lower.…”

Section: Introductionmentioning

confidence: 99%

Lock-In Thermal Test Simulation, Influence, and Optimum Cycle Period for Infrared Thermal Testing in Non-Destructive Testing

Silva

Vaz

Leite

et al. 2022

Sensors

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Lock-in thermal tests (LTTs) are one of the best ways to detect defects in composite materials. The parameter that most affects their performance is the cycle period of the stimulation wave. Its influence on the amplitude-phase results was determined by performing various numeric simulations and laboratory tests. The laboratory tests were used to infer part of the simulation parameters, namely the input and output heat, corresponding to the stimulation and natural convection. The simulations and the analysis of their results focus on the heat flow inside the sample and the manner they change for different geometries. This was performed for poly(methyl methacrylate (PMMA) and carbon fiber-reinforced polymers (CFRPs). The simulation of these materials was also used to create prediction surfaces and equations. These predict the amplitude and phase for a sample with a thickness l and a cycle period. These new findings were validated with new laboratory tests and two new samples. These validated the prediction surfaces and equations and can now be used as a reference for future works and industrial applications.

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Application of infrared thermography in concrete bridge deck inspection: current practices, challenges and future needs

Ibrahim,

Faris,

Zayed

et al. 2024

Nondestructive Testing and Evaluation

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Analyzing the Influence of the Stimulation Duration in the Transient Thermal Test – Experimental and FEM Simulation

Cited by 4 publications

References 17 publications

Temperature patterns obtained in thermoelastic stress test at different frequencies, a FEM approach

Temperature patterns obtained in thermoelastic stress test at different frequencies, a FEM approach

Lock-In Thermal Test Simulation, Influence, and Optimum Cycle Period for Infrared Thermal Testing in Non-Destructive Testing

Application of infrared thermography in concrete bridge deck inspection: current practices, challenges and future needs

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