Heat dissipation energy under fatigue based on infrared data processing

Fedorova, A.; Bannikov, Mikhail; Terekhina, A. I.; Plekhov, O.

doi:10.1080/17686733.2013.852416

Cited by 24 publications

(14 citation statements)

References 15 publications

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“…To calculate the heat sources from the noisy temperature fields, the procedure of the movement compensation and filtering of infrared data was performed. These algorithms are described in detail in [9].…”

Section: T Tmentioning

confidence: 99%

“…The main difficulties associated with application of the second technique can be attributed to the necessity to differentiate strongly oscillating signals and to determine the parameters responsible for the interaction between the specimen and the external environment. Nevertheless, IR thermography data are widely used to gain deeper insight in the process of plastic deformation and fracture of metallic materials [5][6][7][8][9][10]. It was shown in [11,12] that the results of contact (heat flux sensor) and non-contact (IR thermography) measurements of energy dissipation during irreversible deformation agree well.…”

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confidence: 99%

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Three approaches to evaluate of the heat dissipated during fatigue crack propagation experiments

Vedernikova

Iziumova

Vshivkov

et al. 2019

Frattura Ed Integrità Strutturale

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This work is devoted to the comparative analysis of three techniques for measurement of energy dissipation in metals under fatigue crack propagation: use of original contact heat flux sensor, post-processing of infrared thermography data and lock-in thermography. Contact heat flux sensors allow real-time recording of heat source values. Non-contact temperature measurements by infrared thermography techniques make it possible to calculate the heat source field on the specimen surface by solving a heat conductivity equation. Lock-in thermography is a well-established technique for measuring energy dissipation under cyclic loading conditions based on the analysis of the second harmonic amplitude of the thermal signal. This paper describes the results of the experiments with V-notched flat specimens made of stainless steel AISI 304 which were subjected to cyclic loading. It was shown that the values of energy dissipation estimated by different techniques are in good qualitative agreement. Contact and noncontact measurements can be used for investigation of energy dissipation either separately or in combination. Based on the measurements, the power dependence of fatigue crack growth rate on dissipated heat near the crack tip can be obtained.

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Section: T Tmentioning

confidence: 99%

mentioning

confidence: 99%

Three approaches to evaluate of the heat dissipated during fatigue crack propagation experiments

Vedernikova

Iziumova

Vshivkov

et al. 2019

Frattura Ed Integrità Strutturale

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“…Such investigations allow determining an energy part converted into heat as well as estimating stored energy through the rearrangement of crystal structure. In a number of papers [1][2][3][4] the studies of evolved heat variation relative to plastic deformation energy was subjected. Dissipated energy in shape-memory alloys Cu-Zn-Al, Ni-Ti, Cu-Al-Be, Ti-4.2Al-1.6Mn was studied under cyclic loading [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

The variation of storage and heat energy in AISI 304 under plastic deformation

Lunev

Nadezhkin

2019

THERM SCI

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The results of the analysis of heat and stored energy variation in stainless steel AISI 304 under tension are presented in this work. The distributions of temperature and strain on the surface of specimens have been obtained by using infrared thermography and the digital image correlation of laser speckle patterns techniques. It has been found that the plastic flow diagram consists of two linear stages. The first one is characterized by the monotonic growth in evolved heat. At the second linear stage the portion of stored energy rises, that is connected with the growth in the rate of martensitic transformations. A temperature fluctuation in the center of a specimen at the true strain over 0.4 appears due to the motion of localized strain bands, which are also the sources of heat.

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“…A lot of research is focused on the mechanisms of deformation and fracture of UFG metals and alloys using structure-sensitive methods [11][12][13]. Modern, high sensitivity infrared (IR) thermal imaging systems can provide non-contact, full-field temperature maps and measurements in studies of the formation of structural defects and these may be used to predict structural changes during both the deformation processes and early stages of fracture [11,[14][15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Analyzing the Deformation and Fracture of Bioinert Titanium, Zirconium and Niobium Alloys in Different Structural States by the Use of Infrared Thermography

Sharkeev

Вавилов

Skripnyak

et al. 2018

Metals

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Bioinert metals are used for medical implants and in some industrial applications. This study was performed to detect and analyze peculiarities that appear in the temperature distributions during quasi-static tensile testing of bioinert alloys. These alloys include VT1-0 titanium, Zr-1%Nb and Ti-45%Nb in both coarse-grain (CG) and ultrafine-grain (UFG) states. The crystal structure, as well as the crystal domain and grain sizes of these alloys in the UFG state, may be different from the CG versions and identifying the thermal signatures that occur during their deformation and fracture is of interest, as it may lead to an understanding of physical processes that occur during loading. By comparing the surface temperature distributions of specimens undergoing deformation under tensile loading to the distributions at maximum temperatures it was found that the observed differences depend on the alloy type, the alloy structural state and the thermal properties of structural defects in the specimen. Macro-defects were found in some specimens of VT1-0 titanium, Zr-1Nb and Ti-45Nb alloys in both the CG and UFG states. The average tensile strength of specimens containing defects was lower than that of specimens with no defects. Infrared thermography documents change in the thermal patterns of specimens as they are deformed under tensile loading and when the load stops changing or the specimen breaks.

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Heat dissipation energy under fatigue based on infrared data processing

Cited by 24 publications

References 15 publications

Three approaches to evaluate of the heat dissipated during fatigue crack propagation experiments

Three approaches to evaluate of the heat dissipated during fatigue crack propagation experiments

The variation of storage and heat energy in AISI 304 under plastic deformation

Analyzing the Deformation and Fracture of Bioinert Titanium, Zirconium and Niobium Alloys in Different Structural States by the Use of Infrared Thermography

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