Simplified Estimate of Fatigue Damage Based on Dynamic Analysis

Dekýš, Vladimír; Kriska, Pavol; Lietava, Ladislav; Kopas, Peter; Štalmach, Ondrej

doi:10.20858/sjsutst.2018.99.2

Cited by 4 publications

(3 citation statements)

References 8 publications

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“…Experimental modal analysis was performed using the Bump Test Module of the SKF Microlog analyzer. Literature research has shown that bump testing is sufficient for modal frequency detection alone (Bean et al, 2016; Cerpinska et al, 2018; Dekys, 2017; Dekys et al, 2018). Table 3 presents the vibration measurement parameters used for experimental modal analysis and frequency response analysis.…”

Section: Design Characterization and Resultsmentioning

confidence: 99%

Experimental and numerical vibration analysis of surface mechanical attrition treatment

Yarar

Ertürk

Açıkgöz

et al. 2022

Journal of Vibration and Control

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The surface mechanical attrition treatment creates a nanocrystal layer with improved mechanical properties without changing the surface chemistry. Vibration produces residual stresses in a layer close to the surface by successive impacts on the material surface. Vibration treatments represent a “green” alternative to surface treatments without the use of chemicals and high temperatures. Depending on the operating frequency and amplitude of a particular vibration platform, the most decisive parameter to be controlled for the efficiency of the application is the velocity. Vibration platforms in the SMAT process are ultrasonic and mechanically based platforms. This work presents a vibration platform where velocity is below 1 m/s, which is the lowest operating speed defined in the SMAT process. This work includes both analytical and numerical solutions to the natural frequency values of the vibrating table. The operating conditions were determined by finding the natural frequency values. The amplitude, velocity, and acceleration relations of the vibrating table that will occur during the process were found using the frequency response analysis method. ANSYS and MATLAB were used for numerical and analytical solutions, respectively. Numerical and analytical results were in agreement with the experimental modal analysis.

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Section: Design Characterization and Resultsmentioning

confidence: 99%

Experimental and numerical vibration analysis of surface mechanical attrition treatment

Yarar

Ertürk

Açıkgöz

et al. 2022

Journal of Vibration and Control

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“…A procedure for vibration analysis of the device, based on measured data in simulated operating modes in mechanisms, is studied in [11]. In [12], these new trends in torsional vibration calculation for various vehicles are briefly described, with attention paid not only to practical use but above all to how and to what extent these themes should be presented to students.…”

Section: Transfer Matrix For Elastic Bearingmentioning

confidence: 99%

Modelling of Critical Velocities of the Cardan Mechanism using Transfer Matrix Method

Hrubý¹,

Náhlík²

2021

Komunikácie

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The presented paper focuses to rotating components of mechanical constructions. The problem of the spatial combined bending-gyratory vibration and calculation of the Eigen frequencies is studied. The model of Cardan Mechanism is solved by the transfer matrix method. Transfer matrices were derived for shaft, concentrated mass and elastic bearing. The physical and mechanical properties of each part of the mechanism are hidden in these matrices. A procedure for calculating Eigen frequencies was proposed.

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“…Subsequently, the response is recorded using a thermal camera. Active thermography includes non-destructive testing (NDT) using thermographic systems [1][2][3][4], thermoelastic stress analysis [5][6][7][8][9], methods for assessing the fatigue of materials [10][11][12][13][14][15][16] etc. The bestknown methods in the field of active thermography include:…”

Section: Introductionmentioning

confidence: 99%

Comparison of the Optical Lock-in Thermography using the Reflection Mode and the Transmission Mode

Stalmach,

Dekys,

Straka

et al. 2022

MATEC Web Conf.

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Optical lock-in thermography is a non-destructive testing method. The surface of the sample is excited using the thermal waves and the response is recorded by the thermal camera. This image thermal sequence is processed using the image processing method named lock-in method. Optical lock-in thermography can be used to detect cracks and damages in metal or composite material. Two position modes are used: the reflection and the transmission mode. In this paper, are compared these two modes. An experiment is carried out on a printed composite plane with the square blinded holes placed in the different depths below the surface. The phase images are created using the lock-in method for both position modes. The results are compared and the advantages and the disadvantage of these position modes find out.

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Simplified Estimate of Fatigue Damage Based on Dynamic Analysis

Cited by 4 publications

References 8 publications

Experimental and numerical vibration analysis of surface mechanical attrition treatment

Experimental and numerical vibration analysis of surface mechanical attrition treatment

Modelling of Critical Velocities of the Cardan Mechanism using Transfer Matrix Method

Comparison of the Optical Lock-in Thermography using the Reflection Mode and the Transmission Mode

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