Metallurgical failure analysis of a welded drive beam of a vibrating screen

Rumiche, Francisco; Noriega, Ainsworth; Lean, Paul; Fosca, Carlos

doi:10.1016/j.engfailanal.2020.104936

Cited by 10 publications

(3 citation statements)

References 9 publications

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“…The maximum vibration frequency of the test platform is 25 Hz, and the range of double amplitude is 3–15 mm. The vibration frequency of the mining vibrating screen studied by most scholars is about 16 Hz with the double amplitude between 8 and 9 mm 31 , but many mining vibrating screens with different vibration frequencies and displacements that have been applied in actual production 32 . Therefore, the test platform can meet the test requirements.…”

Section: Test Verificationmentioning

confidence: 99%

Displacement of mining vibrating screen obtained from acceleration based on improved S–G filter

Xiao,

Lu,

Yan

2024

Sci Rep

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Vibration displacement is one of the key parameters in fault diagnosis of vibrating screens. Monitoring of acceleration signals of vibrating screens can be disturbed due to various factors such as on-site working conditions and equipment. In order to obtain accurate displacement signals of vibrating screen, the method for converting vibration acceleration to displacement based on improved Savitzky–Golay (S–G) filter is proposed. The Particle Swarm Optimization (PSO) algorithm is used to optimize the window length of the S–G filter with the fixed polynomial. The filters are cascaded to denoise the signals multiple times. The reasonable regularization parameter of the Smoothed Prior Approach (SPA) is calculated to remove the trend item from the acceleration signals. The vibration displacement is obtained by integrating the preprocessed acceleration data in the frequency domain. The results demonstrate that the objectivity of parameter selection of filter is improved, and the denoising effect is significant. The filtering effect of the filter is further improved after cascading. It becomes better as the number of stages of cascade increases. The vibration displacement can be obtained accurately by the proposed method. The vibration test platform is built to verify the correctness of the method.

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Section: Test Verificationmentioning

confidence: 99%

Displacement of mining vibrating screen obtained from acceleration based on improved S–G filter

Xiao,

Lu,

Yan

2024

Sci Rep

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“…More recently, the failure of a welded joint after 6.2 × 10 7 cycles on a drive beam of a vibrating screen was investigated by Rumiche et al [85]. Comparing the fatigue life of the component to an appropriate fatigue class from Fry's modified S-N curves [14] returns an approximate stress range of 20 MPa, which is within typical operating stress ranges for vibrating screen components [85]. Other industrial applications where VHCF failures of welded components have been observed include conveyor pulleys [86] and railway bridges [87].…”

Section: Industrial Case Studiesmentioning

confidence: 99%

Very High Cycle Fatigue of Welds: A Review

England,

Toumpis,

Gorash

2023

Metals

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The design life of welded structures and components extends into the very high cycle fatigue (VHCF) regime across various applications. However, the availability of data on the fatigue behaviour of welded joints in the VHCF regime is limited, particularly when compared to the low and high cycle fatigue regimes. The development of ultrasonic fatigue testing equipment has accelerated fatigue testing and allowed for the VHCF properties of welds to be investigated in a feasible timeframe. In the present review, the emerging research concerning the VHCF behaviour of welds of various steels and non-ferrous alloys are individually explored. Overall, it is observed that welded joints have significantly lower fatigue strength than the base metal in the VHCF regime and that welding defects have a considerable influence on fatigue strength. Through the discussion of the relevant literature, important findings concerning the effects of specimen geometry and fatigue improvement methods are underlined. Furthermore, the guidance provided within design standards is compared, and some examples of VHCF failures of in-service components are highlighted. Finally, perspectives on future directions of investigation are put forward with the aim of encouraging further research in the field of VHCF of welds.

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“…Such faces are simple and reliable in manufacture and operation. Such faces are for instance the AURY curved vibrating screens operated in separation of magnetite from products of processing and desliming [12,13]. However, there is yet no information about using these screens in simultaneous milling and sizing.…”

Section: Introductionmentioning

confidence: 99%

The process of the mill feed flow along a curved acting face of a vibration mill screen

Bardovsky¹,

Gorbatyuk²,

Gerasimova³

et al. 2023

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The article describes the studies into the process of the mill feed flow along a curved vibratory surface under the action of oriented vibrations. The differential equation of the relative movement of a grinding body in a layer of a milled material along the surface are given. The differential equation of a particle motion is obtained. The equations prove that at a certain ratio of the vibration parameters, the grinding balls of different sizes when moving upward in a milled mass have limit heights. It is found that the best size distribution of the grinding balls on the vibratory surface exists at a certain ratio of the vibration amplitude and frequency and the tangent slope of the acting face. The plotted experimental curves prove that the maximum efficiency of the process is achieved at the acting face vibration amplitude in a range of 0.6-0.8 mm and vibration frequency in a range of 48-54 Hz, and is 8-12% higher than at the amplitudes and frequencies beyond these ranges.

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Metallurgical failure analysis of a welded drive beam of a vibrating screen

Cited by 10 publications

References 9 publications

Displacement of mining vibrating screen obtained from acceleration based on improved S–G filter

Displacement of mining vibrating screen obtained from acceleration based on improved S–G filter

Very High Cycle Fatigue of Welds: A Review

The process of the mill feed flow along a curved acting face of a vibration mill screen

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