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Relevant bibliographies by topics / Transient friction measurement

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Journal articles

Academic literature on the topic 'Transient friction measurement'

Author: Grafiati

Published: 6 September 2023

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Journal articles on the topic "Transient friction measurement"

1

Li, Yufeng, and Aric Kumaran Menon. "A Theoretical Analysis of Breakaway Friction Measurement." Journal of Tribology 116, no. 2 (1994): 280–86. http://dx.doi.org/10.1115/1.2927210.

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The transient response of an I-beam friction measurement system to a constant disk acceleration is theoretically analyzed. The friction measurement system is modeled as a single-degree-of-freedom system. It is found that the true breakaway friction is different from the measured breakaway friction, and that the true breakaway time is also different from the measured breakaway time. The system measurement error is evaluated as a function of the acceleration, the effective mass, the spring stiffness, as well as the static and kinetic coefficients of friction. A closed-form dimensionless solution

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2

Prölß, Maximilian, Hubert Schwarze, Thomas Hagemann, Philipp Zemella, and Philipp Winking. "Theoretical and Experimental Investigations on Transient Run-Up Procedures of Journal Bearings Including Mixed Friction Conditions." Lubricants 6, no. 4 (2018): 105. http://dx.doi.org/10.3390/lubricants6040105.

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This paper focuses on the operating behavior of journal bearings for industrial machinery application during run-ups. For this purpose, a numerical simulation code that is based on a two-dimensional extended and generalized Reynolds equation and a full three-dimensional energy equation, was advanced by a theoretical model considering the effects of mixed friction and warming of journal components during start-up. The mixed friction routine contained the elastic half-spaces model proposed by Boussinesq, which considers the influence of rough surfaces by implementing flow factors and calculates

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3

Hoić, Matija, Alen Miklik, Milan Kostelac, Joško Deur, and Andreas Tissot. "Analysis of the Accuracy of Mass Difference-Based Measurement of Dry Clutch Friction Material Wear." Materials 14, no. 18 (2021): 5356. http://dx.doi.org/10.3390/ma14185356.

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The paper demonstrates that the dry clutch friction plate wear rate, measured based on the plate mass difference method, exhibits a transient behavior after each change of friction interface temperature level. The effect is hypothesized to be caused by a temperature-dependent change in the moisture content/mass level in the friction material. To test this hypothesis, a series of synchronized characterization experiments have been conducted by using two friction plates, one for wear tests and the other for drying in an oven under the same temperature conditions. Based on the analysis of test re

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4

Hwang, J. J., G. J. Hwang, R. H. Yeh, and C. H. Chao. "Measurement of Interstitial Convective Heat Transfer and Frictional Drag for Flow Across Metal Foams." Journal of Heat Transfer 124, no. 1 (2001): 120–29. http://dx.doi.org/10.1115/1.1416690.

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Convective heat transfer and friction drag in a duct inserted with aluminum foams have been studied experimentally. The combined effects of foam porosity (ε=0.7, 0.8, and 0.95) and flow Reynolds number (1900⩽Re⩽7800) are examined. Frictional drags for flow across the aluminum foam are measured by pressure taps, while interstitial heat transfer coefficients in the aluminum foam are determined using a transient single-blow technique with a thermal non-equilibrium two-equation model. Solid material temperature distribution is further measured for double check of the heat transfer results. To unde

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5

Wei, Wei, Jian Wei Yu, Tao You, Xiao Fen Yu, and Yong Hong Wang. "Evaluation of the Transient Temperature Distribution of End-Face Sliding Friction Pair Using Infrared Thermometry." Key Engineering Materials 613 (May 2014): 213–18. http://dx.doi.org/10.4028/www.scientific.net/kem.613.213.

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A real-time temperature measurement system was designed for end-face sliding friction pairs with an infrared (IR) probe and IR thermography installed on it. The approximate temperature of contact surface was measured by the probe while non-contact surface’s temperature distribution was determined with the IR thermography. Two experiments with constant load but varied rotational speeds were carried out, and a preliminary study was made to analyze the variation of temperature in the friction process. Furthermore, the probe data was used as thermal load to calculate the temperature field by the F

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6

Gulino, R., S. Bair, W. O. Winer, and B. Bhushan. "Temperature Measurement of Microscopic Areas Within a Simulated Head/Tape Interface Using Infrared Radiometric Technique." Journal of Tribology 108, no. 1 (1986): 29–34. http://dx.doi.org/10.1115/1.3261139.

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This study concerns the infrared measurement of steady-state and transient temperatures of microscopic areas within the contact region formed by a magnetic tape passing over a simulated recording head. This research demonstrates that the tape surface temperature can be measured within specific limits of response time and sensitivity. Due to its high tranmissivity in the relevant infrared band, sapphire was chosen as the material to be used in the fabrication of a simulated recording head. A Barnes RM2A infrared microscope was the principle radiometer used, while a best effort was made in scann

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7

Meng, Fei, and Junqiang Xi. "Numerical and Experimental Investigation of Temperature Distribution for Dry-Clutches." Machines 9, no. 9 (2021): 185. http://dx.doi.org/10.3390/machines9090185.

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The temperature rise of the engaging clutch during shifting depends heavily on the transmitted torque. Precisely estimating the clutch temperature not only improves clutch control but also the optimal design of the clutch. However, the contact surface of the friction lining is closed, and the surface temperature is often difficult to measure accurately. In this study, a theoretical model of a two-dimensional transient temperature field for the friction disc has been established. In the radial and axial directions under different launching conditions, the temperature field of a friction disc is

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8

Hu, Yusheng, Rongting Zhang, Jinquan Zhang, Qifeng Song, and Guangxiong Chen. "Friction-Excited Oscillation of Air Conditioner Rotary Compressors: Measurements and Numerical Simulations." Lubricants 10, no. 4 (2022): 50. http://dx.doi.org/10.3390/lubricants10040050.

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The oscillation of a rotary compressor was measured and analyzed in the frequency and time domains. The harmonic wavelet transform was used to dissolve the oscillation signal into a series of single-frequency components. A power spectrum analysis of the single-frequency components shows that there are many vibration components whose frequencies are one, double, triple, quadruple, and even tens of times the rotating frequency. An envelope spectrum analysis shows that some single-frequency components originate from the friction-excited oscillation of the compressor. A full-size mode-coupling mod

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9

Irawan, Yudy Surya, Moch Agus Choiron, and Wahyono Suprapto. "Tensile strength and thermal cycle analysis of AA6061 friction weld joints with different diameters and various friction times." Eastern-European Journal of Enterprise Technologies 2, no. 12 (110) (2021): 15–21. http://dx.doi.org/10.15587/1729-4061.2021.227224.

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The paper reports measurement of tensile strength and the thermal cycle of AA6061 aluminum alloy circular bar friction weld with different diameters and various friction times. A continuous drive friction welding (CDFW) of AA6061 was conducted to weld the AA6061 circular bar with different diameters of 30 mm for the rotating part and 15 mm for the stationary part. The CDFW process was carried out with the revolution speed of 1,600 rpm, the initial compressive force of 2.8 kN during the friction stage for various friction times of 10, 12, and 14 seconds, and an upset force of 28 kN for 60 secon

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10

Chen, Chao, and Chongmin She. "Creep Effect Analysis at the Friction Interface of a Rotary Ultrasonic Motor." International Journal of Applied Mechanics 07, no. 02 (2015): 1550031. http://dx.doi.org/10.1142/s1758825115500313.

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Theoretical and experimental studies for the creep mechanism at the friction interface between rotor and stator of traveling wave type rotary ultrasonic motors (TRUM) are performed in this work. A modeling method is developed to investigate the creep and the distributed contact pressure in the friction interface for the piezoelectric composite stator with complex geometries. The annular laminated structure of the stator is discretized into a semi-analytical plate element in the radial direction, and the teeth on top of the stator are modeled by the finite element (FE) method. Then a coupled ap

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