Study of anti-laser irradiation performance of shot-peened 40CrNiMoA alloy steel

Liu, Zhanwei; Wu, Ningning; Huang, Xianfu; Xie, Huimin; Lv, Xintao; He, Guang

doi:10.1016/j.msea.2012.08.075

Cited by 8 publications

(4 citation statements)

References 28 publications

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“…In the experiment described in this paper, the error caused by the non-uniformity in the grating thickness was produced when bending the flexible film onto the curved specimen along the arc of the specimen. The thickness variation of the grating can be controlled to less than 0.01 mm hence, as in (8), it can be shown that this error is less than 200 με.…”

Section: Virtual Strain Caused By a Flexible Film Gratingmentioning

confidence: 91%

“…The measurement of residual stress started in the 1930s and included destructive methods, such as the hole-drilling method, the cutting method and the layer stripping method, and non-destructive methods, such as x-ray diffraction, ultrasonics, magnetics and neutron diffraction [2][3][4][5][6]. Destructive methods are often combined with other methods for deformation measurement, such as the strain gauge technique, or optical methods, such as the moiré method or geometric phase analysis (GPA) methods [7][8][9], giving a wide range of applications in residual stress measurement. Destructive methods in combination with the moiré method have typically been applied to plane surface stress measurements but rarely to curved surfaces.…”

Section: Introductionmentioning

confidence: 99%

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A curved surface micro-moiré method and its application in evaluating curved surface residual stress

Zhang

Liu

et al. 2014

Meas. Sci. Technol.

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The moiré method is typically applied to the measurement of deformations of a flat surface while, for a curved surface, this method is rarely used other than for projection moiré or moiré interferometry. Here, a novel colour charge-coupled device (CCD) micro-moiré method has been developed, based on which a curved surface micro-moiré (CSMM) method is proposed with a colour CCD and optical microscope (OM). In the CSMM method, no additional reference grating is needed as a Bayer colour filter array (CFA) installed on the OM in front of the colour CCD image sensor performs this role. Micro-moiré fringes with high contrast are directly observed with the OM through the Bayer CFA under the special condition of observing a curved specimen grating. The principle of the CSMM method based on a colour CCD micro-moiré method and its application range and error analysis are all described in detail. In an experiment, the curved surface residual stress near a welded seam on a stainless steel tube was investigated using the CSMM method.

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Section: Virtual Strain Caused By a Flexible Film Gratingmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

A curved surface micro-moiré method and its application in evaluating curved surface residual stress

Zhang

Liu

et al. 2014

Meas. Sci. Technol.

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“…Liu et al [75] developed a moiré interferometry-sectioning method and measured the residual stress of a shot-peening specimen along its thickness, as illustrated schematically in Fig.10. Fig.…”

Section: Sectioning Methodsmentioning

confidence: 99%

Recent progress in residual stress measurement techniques

Huang

Liu

Xie

2013

Acta Mechanica Solida Sinica

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124

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Residual stress measurement is of critical significance to in-service security and the reliability of engineering components, and has been an active area of scientific interest. This paper offers a review of several prominent mechanical release methods for residual stress measurement and recent developments, focusing on the hole-drilling method combined with advanced optical sensing. Some promising trends for mechanical release methods are also analyzed.

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“…40CrNiMoA steel is widely used for wear-resistant parts such as flexsplines of harmonic reducers, pistons and so on because of its high toughness, strength and thermal stability [1][2][3][4]. The wear of the flexspline is one of the main reasons for the failure of the harmonic reducer [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Effect of groove textures on tribological properties of 40CrNiMoA steel under starved grease lubrication

Lin¹,

Li²,

Xie³

et al. 2022

Surf. Topogr.: Metrol. Prop.

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40CrNiMoA steel is widely used in important mechanical parts under starved lubrication, such as shafts, gears and flexsplines for harmonic reducers. To improve the tribological properties of 40CrNiMoA steel and prolong the service life of the material in practical application, micro-grooves were fabricated on steel discs by laser texturing. The texture areal density is controlled by the number and width of the micro-grooves. The friction tests were carried on a ball-on-disk friction tester. The worn surfaces were observed by a scanning electron microscope and a three-dimensional microscope to discuss the friction and wear properties of textured discs under starved grease lubrication. The results show that the groove texture can effectively improve the tribological performance of the 40CrNiMoA steel. After optimizing, the tribological properties were greatly improved. The average friction coefficient reduced from 0.259 to 0.116 and wear rate was reduced by about 46 times. The contact stress of ball and textured discs was analyzed, the results shown that larger width of groove lead to higher contact stress, which may increase friction and wear. Therefore, storing lubricants and increasing contact stress should be balanced to obtain better tribological performances. In this study, the preferred range of texture areal density is 10%~22%.

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Study of anti-laser irradiation performance of shot-peened 40CrNiMoA alloy steel

Cited by 8 publications

References 28 publications

A curved surface micro-moiré method and its application in evaluating curved surface residual stress

A curved surface micro-moiré method and its application in evaluating curved surface residual stress

Recent progress in residual stress measurement techniques

Effect of groove textures on tribological properties of 40CrNiMoA steel under starved grease lubrication

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