A Study on the Mean Wavelength and Lateral Spacing Parameters for 3-D Surface Topography Data.

Sakaguchi, Tomohiro; Yanagi, Kazuhisa; Hara, Seiichiro

doi:10.2493/jjspe.65.1306

Cited by 3 publications

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“…The surface texture parameters are usually obtained by the 3D surface measurement in advance. Some of the conventional approaches to obtain the surface texture parameters are the curve fittings applied on the surface texture (Nayak, 1971;Sakaguchi et al, 1999;Noro et al, 2006). However, the 3D measurement with a spatial resolution of a micron is required in the measurement of the surface texture, and the measurable area is limited.…”

Section: Introductionmentioning

confidence: 99%

Limitation of estimation method of surface texture parameters by inverse analysis of hammering test data with disturbance

Kishimoto

Kobayashi

Ohtsuka

et al. 2019

Mechanical Engineering Journal

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The surface texture formed by the micro asperities on the surface of the solid members induces the stiffness reduction of the structure constructed by screws and bolts. In recent years, the fixing by screws and bolts is one of the primary fixing methods to construct multi-material structures, and the fixing state such as the interfacial stiffness at the clamped part is required to be evaluated for the proper fixing. The interfacial stiffness affects the total stiffness of the structure and is dominated by the surface texture and the clamping force. Especially, the standard deviation of the asperity peak heights and the homogenized elastic modulus collectively named as the surface texture parameters mainly determine the interfacial stiffness. This study has developed an estimation method of the surface texture parameters by the inverse analysis of the hammering test data, and numerically investigated the basic behavior and the estimation error of the inverse analysis for the establishment of the methodology to find the limitation of the proposed method against the disturbance in the hammering test data. In the investigation, a theoretical limitation of the inverse analysis has been derived by the linear approximation, and a numerical simulation which is the same approach as the Monte Carlo simulation has been performed by using a bolted joint model consisting of two plates joined by the eight sets of the bolt and nut. From the results of the numerical simulation, the followings were summarized: 1) The recalculation error of the natural frequency subjected to the clamping force is as large as the disturbance in the hammering test data. 2) The sensitivity of the homogenized elastic modulus is much smaller than that of the standard deviation of the asperity peak heights in the inverse analysis. 3) The theoretical limitation of the linear approximation can qualitatively predict the estimation errors of the surface texture parameters.

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Section: Introductionmentioning

confidence: 99%

Limitation of estimation method of surface texture parameters by inverse analysis of hammering test data with disturbance

Kishimoto

Kobayashi

Ohtsuka

et al. 2019

Mechanical Engineering Journal

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show abstract

“…The antinode of the specimen was hammered, and the natural frequency f In order to verify the estimation accuracy, the 3D surface texture measurement was performed in advance of the hammering test. The surface textures of the joint areas of the specimens before jointed were measured, and the surface texture parameters η i , β i , σ i were derived by the 3D surface texture analyze tool SUMMIT 5.1.3 (Sakaguchi et al, 1999;Noro et al, 2006). The analyze tool picks the asperity peaks on the surface texture, and calculates the number of the asperity peaks per unit area η i and the standard deviation of the asperity peak heights σ i based on the picked asperity peaks.…”

Section: Specimen and Analysis Modelmentioning

confidence: 99%

“…Conventional approaches to obtain the surface texture parameters are curve fittings applied on the surface texture as shown in Fig. 1 (Nayak, 1971;Sakaguchi et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Estimation method of surface texture parameters by inverse analysis of dynamic characteristics

Kishimoto

Kobayashi

Ohtsuka

et al. 2017

Mechanical Engineering Journal

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The surface texture describes the surface topography formed by micro asperities on a surface of a solid member. The Hertz-Mindlin theory is one of contact theories based on the mechanics of elasticity. The main parameters for the theory are the number of the asperity peaks per unit area, the radius of the curvature at the asperity peak and the standard deviation of the asperity peak heights. These parameters are collectively named as the surface texture parameters. Most of the conventional approaches to obtain these parameters are curve fittings applied on the surface texture. However, the 3D measurement with a spatial resolution of a micron is required in the measurement of the surface texture, and the measurable area is limited. This study has developed a novel method to estimate the surface texture parameters by the inverse analysis of the dynamic characteristics of the target. In the proposed method, the natural frequency of the target is obtained by the hammering test and the finite element analysis with the interfacial element based on the Hertz-Mindlin theory. Then the set of the surface texture parameters minimizing the residual between the test result and the analysis result is derived. In order to verify the proposed method, a series of hammering tests was carried out by using specimens with bolted joints. Using the test results, the surface texture parameters were estimated by the proposed method. From the estimation results, it confirmed that the calculation results of the natural frequency in the inverse analysis had good agreement with the results of the hammering test. The estimation accuracy of the proposed method was comparable to that of the 3D surface texture measurement in terms of fitting the quadratic surfaces.

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A Study on Surface Material Measures for Areal Surface Texture Measuring Instruments

Nemoto¹,

Yanagi²,

Aketagawa³

et al. 2010

Journal of the Japan Society for Precision Engineering

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A Study on the Mean Wavelength and Lateral Spacing Parameters for 3-D Surface Topography Data.

Cited by 3 publications

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Limitation of estimation method of surface texture parameters by inverse analysis of hammering test data with disturbance

Limitation of estimation method of surface texture parameters by inverse analysis of hammering test data with disturbance

Estimation method of surface texture parameters by inverse analysis of dynamic characteristics

A Study on Surface Material Measures for Areal Surface Texture Measuring Instruments

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