Research on Fatigue Damage of Compressor Blade Steel KMN-I Using Nonlinear Ultrasonic Testing

Wang, Pengfei; Wang, Weiqiang; Li, Jianfeng

doi:10.1155/2017/4568460

Cited by 8 publications

(9 citation statements)

References 19 publications

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“…In the present design the flow rate and static pressure is taken as an input data based on the industrial requirement of machine [16,17]. The selected input data are:…”

Section: Selection Of Impeller Type As Per Specific Speedmentioning

confidence: 99%

Experimental and numerical analysis of vibrations in impeller of centrifugal blower

More¹,

Dongre²,

Deshmukh³

2019

SN Appl. Sci.

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Centrifugal blowers are widely used in different industrial applications nuclear and petrochemical, which are proficient of as long as restrained to high pressure rise and flow rates. Design of such impellers is important with noise reduction and maximum efficiency. In present work, an experimental and numerical analysis is done to study the effect of impeller blade thickness and rotating speed on the performance of the impeller. Different blade thickness has been considered with different rotating speed. A modal analysis is done for the numerical study using commercial software ANSYS Workbench. The numerical results are validated with experimental results found in test. The six different mode shapes are found in numerical study. The natural frequency and the total deformation is calculated for different blade thickness and rotating speed. The results shows that, the blade with 1.5 mm thickness has a reduced noise and vibrations with maximum rotating speed.

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“…In the present design the flow rate and static pressure is taken as an input data based on the industrial requirement of machine [16,17]. The selected input data are:…”

Section: Selection Of Impeller Type As Per Specific Speedmentioning

confidence: 99%

Experimental and numerical analysis of vibrations in impeller of centrifugal blower

More¹,

Dongre²,

Deshmukh³

2019

SN Appl. Sci.

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show abstract

“…There are many studies suggest that nonlinear ultrasonic technique has high sensitivity to the early microstructure evolution around the internal damage of metal components [10,11]. The early damage of metallic materials is mainly due to the microstructure evolution at micro/nano scale, such as slip line enrichment, dislocation initiation and proliferation, cavity nucleation and growth at grain boundaries [12], etc.…”

Section: Introductionmentioning

confidence: 99%

Investigation on characteristics of tensile damage and microstructure evolution of steel AISI 316L by nonlinear ultrasonic Lamb wave

Wang

Chen

Wang

et al. 2022

International Journal of Pressure Vessels and Piping

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“…The influence of the three-dimensional structure of the blade and the surface state after service is not considered. Two sets of KMN fatigue tests were carried out in the previous work [22]. One set of specimens was subjected to bending fatigue test, and the other set was subjected to bending fatigue test with initial tensile load.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Damage Evaluation of Compressor Blade Based on Nonlinear Ultrasonic Nondestructive Testing

Wang

Zheng

et al. 2021

JMSE

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Nonlinear ultrasonic testing is highly sensitive to micro-defects and can be used to detect hidden damage and defects inside materials. At present, most tests are carried out on specimens, and there are few nonlinear ultrasonic tests for fatigue damage of compressor blades. A vibration fatigue test was carried out on compressor blade steel KMN, and blade specimens with different damage degrees were obtained. Then, the nonlinear coefficients of blade specimens were obtained by nonlinear ultrasonic testing. The results showed that the nonlinear coefficient increased with the increase in the number of fatigue cycles in the early stage of fatigue, and then the nonlinear coefficient decreased. The microstructures were observed by scanning electron microscopy (SEM). It was proven that the nonlinear ultrasonic testing can be used for the detection of micro-cracks in the early stage of fatigue. Through the statistical analysis of the size of the micro-cracks inside the material, the empirical formula of the nonlinear coefficient β and the equivalent crack size were obtained. Combined with the β–S–N three-dimensional model, an evaluation method based on the nonlinear ultrasonic testing for the early fatigue damage of the blade was proposed.

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Research on Fatigue Damage of Compressor Blade Steel KMN-I Using Nonlinear Ultrasonic Testing

Cited by 8 publications

References 19 publications

Experimental and numerical analysis of vibrations in impeller of centrifugal blower

Experimental and numerical analysis of vibrations in impeller of centrifugal blower

Investigation on characteristics of tensile damage and microstructure evolution of steel AISI 316L by nonlinear ultrasonic Lamb wave

Fatigue Damage Evaluation of Compressor Blade Based on Nonlinear Ultrasonic Nondestructive Testing

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