Determination of the fatigue behavior of mechanical components through infrared thermography

Faria, José; Fonseca, Luiz Aun; Faria, Alfredo R. de; Cantisano, Artur; Cunha, Thiago N.; Jahed, Hamid; Montesano, John

doi:10.1016/j.engfailanal.2021.106018

Cited by 10 publications

(7 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, the energy input by the test load was not sufficient to surpass the barrier imposed by the compressive residual stress peak exemplified by Figure 5B. More information on crankshaft residual stress data can be found in Fonseca and Faria, 37 Fonseca et al, 33 Faria et al 38 and Fonseca et al 39 The natural frequency shift, therefore, indicates the crack size.…”

Section: Resultsmentioning

confidence: 98%

Crack propagation mapping at component‐level fatigue testing by means of natural frequency tracking control

Cunha

Rego

Victor

et al. 2022

Fatigue Fract Eng Mat Struct

Self Cite

View full text Add to dashboard Cite

Advancements seeking structural components' strength and weight reduction necessarily pass through fatigue testing. Understanding failure phenomena and crack evolution is a way of methodologically achieving such a goal. An own-designed resonant fatigue test rig was used to study the behavior of three distinctly manufactured crankshaft batches. A control system and a resonant frequency estimator were developed to follow the overall stiffness reduction with crack advancement. The control algorithm followed the frequency decay to compensate for the input load. The control strategies were validated by finding the system's natural frequency at the beginning of the test and maintaining a constant nominal load. Fractographies made with failed and non-failed specimens revealed the connection between the expected physical results and the natural frequency shift evolution. The implemented logic enables crack advancement tracking and failure determination. The developments here can be overflown to different resonance fatigue systems to characterize their endurance performance.

show abstract

Section: Resultsmentioning

confidence: 98%

Crack propagation mapping at component‐level fatigue testing by means of natural frequency tracking control

Cunha

Rego

Victor

et al. 2022

Fatigue Fract Eng Mat Struct

Self Cite

View full text Add to dashboard Cite

show abstract

“…Recientemente, se han propuesto enfoques experimentales para evaluar la propagación de grietas [6,7], principalmente a partir del desarrollo de las técnicas modernas de medición de la temperatura, la cual, como se reporta ampliamente en la literatura [8][9][10][11][12], se puede correlacionar con la propagación de grieta por fatiga debido a que una gran variedad de estudios demuestran que, en la mayoría de los materiales metálicos, la energía de histéresis por deformación plástica se convierte en calor, como se reportó en el trabajo de Meneghetti et al [13].…”

Section: Antecedentesunclassified

Relación entre el crecimiento y la temperatura en la punta de la grieta por fatiga en acero AISI 1018

et al. 2023

View full text Add to dashboard Cite

En este artículo se presenta un estudio sobre la relación que existe entre el comportamiento del crecimiento de grieta por fatiga y la evolución de la temperatura en la punta de grieta en un acero AISI 1018. Tanto la longitud de la grieta como la temperatura se obtuvieron experimentalmente de ensayos de fatiga de acuerdo a la norma ASTM E647. La temperatura se midió simultáneamente a través de termopares y termografía infrarroja, mientras que la longitud de la grieta se midió a través de un microscopio. Los datos experimentales se procesaron para obtener curvas de ciclos contra temperatura y ciclos contra longitud de grieta para posteriormente correlacionar la información y obtener, por regresión lineal de los datos experimentales, un modelo para relacionar la temperatura con la longitud de la grieta. Los resultados muestran que el modelo propuesto está en buena concordancia con los datos experimentales y permite estimar la tendencia y la magnitud de la temperatura al crecer la grieta.

show abstract

“…Recent developments in sensing technology have resulted in a suite of imaging solutions germane to complex environments [13][14][15][16][17][18][19][20]. State-of-the-art examples include: penetratingradar techniques [13], infrared thermography [14], laser shearography [15], X-ray computed tomography [16], acoustic tomography [17], ultrasonic surface wave methods [18], nonlinear ultrasound [19] and laser ultrasonic imaging [20]. Among which, ultrasonic sensing often emerges as the preferred (or the only feasible) imaging modality in many applications.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic imaging in highly heterogeneous backgrounds

Pourahmadian

Haddar

2023

Proc. R. Soc. A.

View full text Add to dashboard Cite

This work formally investigates the differential evolution indicators as a tool for ultrasonic tracking of elastic transformation and fracturing in randomly heterogeneous solids. Within the framework of periodic sensing, it is assumed that the background at time t ∘ contains (i) a multiply connected set of viscoelastic, anisotropic and piecewise homogeneous inclusions, and (ii) a union of possibly disjoint fractures and pores. The support, material properties and interfacial condition of scatterers in (i) and (ii) are unknown, while elastic constants of the matrix are provided. The domain undergoes progressive variations of arbitrary chemo-mechanical origins such that its geometric configuration and elastic properties at future times are distinct. At every sensing step t ∘ , t 1 , … , multi-modal incidents are generated by a set of boundary excitations, and the resulting scattered fields are captured over the observation surface. The test data are then used to construct a sequence of wavefront densities by solving the spectral scattering equation. The incident fields affiliated with distinct pairs of obtained wavefronts are analysed over the stationary and evolving scatterers for a suit of geometric and elastic evolution scenarios entailing both interfacial and volumetric transformations. The main theorem establishes the invariance of pertinent incident fields at the loci of static fractures and inclusions between a given pair of time steps, while certifying variation of the same fields over the modified regions. These results furnish a basisfor theoretical justification of differential evolution indicators for imaging in complex composites which, in turn, enable the exclusive tomography of evolution in a background endowed with many unknown features.

show abstract

Determination of the fatigue behavior of mechanical components through infrared thermography

Cited by 10 publications

References 27 publications

Crack propagation mapping at component‐level fatigue testing by means of natural frequency tracking control

Crack propagation mapping at component‐level fatigue testing by means of natural frequency tracking control

Relación entre el crecimiento y la temperatura en la punta de la grieta por fatiga en acero AISI 1018

Ultrasonic imaging in highly heterogeneous backgrounds

Contact Info

Product

Resources

About