Metal Surface Fatigue Detection Using Nonlinear Ultrasonic

Yan, Hong; Xu, Chun Guang; Qi, Lin; Cai, Hai Chao

doi:10.4028/www.scientific.net/amm.510.156

Cited by 3 publications

(3 citation statements)

References 12 publications

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“…Therefore, if the

can be measured, the stress state of the material can be estimated. Due to the symmetry of the third order elastic constants in laser cladding coating, the shear wave in the surface wave does not produce harmonic components [ 42 , 43 ], so the description of the nonlinear coefficients for the longitudinal wave is also applicable to the surface wave.…”

Section: Basic Theory Of Ultrasonic Testing For Stressmentioning

confidence: 99%

Progress and Challenges of Ultrasonic Testing for Stress in Remanufacturing Laser Cladding Coating

Yan

Dong²,

Xu³

et al. 2018

Materials

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Stress in laser cladding coating is an important factor affecting the safe operation of remanufacturing components. Ultrasonic testing has become a popular approach in the nondestructive evaluation of stress, because it has the advantages of safety, nondestructiveness, and online detection. This paper provides a review of ultrasonic testing for stress in remanufacturing laser cladding coating. It summarizes the recent research outcomes on ultrasonic testing for stress, and analyzes the mechanism of ultrasonic testing for stress. Remanufacturing laser cladding coating shows typical anisotropic behaviors. The ultrasonic testing signal in laser cladding coating is influenced by many complex factors, such as microstructure, defect, temperature, and surface roughness, among others. At present, ultrasonic testing for stress in laser cladding coating can only be done roughly. This paper discusses the active mechanism of micro/macro factors in the reliability of stress measurement, as well as the impact of stress measurement on the quality and safety of remanufacturing components. Based on the discussion, this paper proposes strategies to nondestructively, rapidly, and accurately measure stress in remanufacturing laser cladding coating.

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“…Therefore, if the

Section: Basic Theory Of Ultrasonic Testing For Stressmentioning

confidence: 99%

Progress and Challenges of Ultrasonic Testing for Stress in Remanufacturing Laser Cladding Coating

Yan

Dong²,

Xu³

et al. 2018

Materials

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“…The perturbation method is mainly to expand the required parameter in power series, here u(x,t) is expanded by the power of x, finally, simplification and consolidation according to the same power of x，get the solution of the equation (8) [33][34] . 2 2 1 1…”

Section: Nonlinear Acoustoelasticity Theorymentioning

confidence: 99%

Progresses and Challenges of Ultrasonic Testing for Stress in Remanufacturing Laser Cladding Coating

Yan¹,

Dong²,

Xu³

et al. 2018

Preprint

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Stess in laser cladding coating is an important factor affecting the safe operation of remanufacturing components. Ultrasonic testing has become a hot direction in nondestructive evaluation of stress, because it has the advantages of safety, non-destructive and on-line detection. This paper provides a review of ultrasonic testing for stress in remanufacturing laser cladding coating. It summarizes the recent research outcomes on ultrasonic testing for stress, analyzes mechanism of ultrasonic testing for stress. Remanufacturing laser cladding coating shows typical anisotropic behaviors, the ultrasonic testing signal in laser cladding coating is influenced by many complex factors, such as microstructure, defect, temperature and surface roughness, etc. At present, ultrasonic testing for stress in laser cladding coating can only be done roughly. The paper discusses active mechanism of micro / macro factors to the reliability of stress measurement and the impact of stress measurement to the quality and safety of remanufacturing components. Base on the discussion, the paper proposes strategies for acquisition of nondestructive, rapid and accurate measurement of stress in remanufacturing laser cladding coating.

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“…For structural components, the first and second stages are 80%∼90% in fatigue life. Therefore, the detection of early fatigue damage is critical to evaluation of component life [1][2][3]. The ultrasonic method is believed to be the most promising nondestructive testing technique compared with other destructive and nondestructive testing.…”

Section: Introductionmentioning

confidence: 99%

Properties of GH4169 Superalloy Characterized by Nonlinear Ultrasonic Waves

Yan

Xiao

et al. 2015

Advances in Materials Science and Engineering

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The nonlinear wave motion equation is solved by the perturbation method. The nonlinear ultrasonic coefficientsβandδare related to the fundamental and harmonic amplitudes. The nonlinear ultrasonic testing system is used to detect received signals during tensile testing and bending fatigue testing of GH4169 superalloy. The results show that the curves of nonlinear ultrasonic parameters as a function of tensile stress or fatigue life are approximately saddle. There are two stages in relationship curves of relative nonlinear coefficientsβ′ andδ′ versus stress and fatigue life. The relative nonlinear coefficientsβ′ andδ′ increase with tensile stress when tensile stress is lower than 65.8% of the yield strength, and they decrease with tensile stress when tensile stress is higher than 65.8% of the yield strength. The nonlinear coefficients have the extreme values at 53.3% of fatigue life. For the second order relative nonlinear coefficientβ′, there is good agreement between the experimental data and the comprehensive model. For the third order relative nonlinear coefficientδ′, however, the experiment data does not accord with the theoretical model.

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Metal Surface Fatigue Detection Using Nonlinear Ultrasonic

Cited by 3 publications

References 12 publications

Progress and Challenges of Ultrasonic Testing for Stress in Remanufacturing Laser Cladding Coating

Progress and Challenges of Ultrasonic Testing for Stress in Remanufacturing Laser Cladding Coating

Progresses and Challenges of Ultrasonic Testing for Stress in Remanufacturing Laser Cladding Coating

Properties of GH4169 Superalloy Characterized by Nonlinear Ultrasonic Waves

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