X-ray investigation of a heterogeneous steel weld

Lyubimova, L. L.; Фисенко, Роман Николаевич; Tabakaev, Roman; Tashlykov, A. A.; Заворин, Александр Сергеевич

doi:10.1016/j.msea.2016.11.058

Cited by 9 publications

(3 citation statements)

References 22 publications

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“…Barat et al [9] experimentally confrmed that the acoustic emission method can be used to detect both typical welding defects in welded joints of diferent structural grades of steel as well as difusion interlayers. Lyubimova et al [20] proposed that the combination of X-ray fuorescence analysis, X-ray difraction, and microhardness determination with traditional inspection methods (visual or ultrasonic inspection [21], etc.) can improve the operational reliability of dissimilar steel welds.…”

Section: Introductionmentioning

confidence: 99%

Intelligent Testing and Analysis of Dissimilar Steel Welds for Industrial Throttle Flowmeter

Tong¹,

Xu³

et al. 2023

Mobile Information Systems

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The throttling flowmeter used in utility boilers has been used as a measuring instrument for a long time. However, its safety performance, such as welding, lacks enough attention. The manufacturing welds of the throttling flowmeter are welded with austenitic stainless steel and pearlitic heat-resistant steel. Cracks and other defects are generally found in the inspection and detection of the manufacturing welds of throttling flowmeters in service, which have serious potential accidents. To find out the relationship between weldingdissimilar steels and defects, the microhardness indentation method was used to measure the residual stress of welding. Combined with the self-developed calculation software of microscopic indentation residual stress distribution, we used the difference between the color of the indentation area and the surrounding area to quickly measure the indentation strain collected by the microscope using the computer image recognition algorithm, which greatly improved the accuracy and speed of the microscopic indentation residual stress test. The results show that the residual stress at the weld of dissimilar steel is relatively large, and the mechanical property test is generally unqualified. The microindentation residual stress analysis method based on computer image recognition is used to quickly, intuitively, and accurately reveal the direct relationship between the combination of dissimilar steel welding materials and the generation of cracks and other defects.

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Section: Introductionmentioning

confidence: 99%

Intelligent Testing and Analysis of Dissimilar Steel Welds for Industrial Throttle Flowmeter

Tong¹,

Xu³

et al. 2023

Mobile Information Systems

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“…It is a significant measure only if the comparison of NDT method is referred and compared with the Damage region corresponding task. The NDT methods frequently used for assessing damage in structures include the acoustic emission technique [1]- [4] ultrasonic technique [5]- [7] x-ray technique [8], [9], eddy current [10] and high speed video camera to obtain modal parameter of monitored structure [11], [12].…”

Section: Introductionmentioning

confidence: 99%

Damage Assessment Based on Modal Analysis of Pipe Structure

et al. 2018

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The degradation of steel pipe structures, especially thickness reduction due to corrosion is a common problem found in marine structures. This calls for an evaluation of the thin structure’s structural health condition to ensure its safety and reliability. This study investigates the effect of reduction in pipe wall thickness on the pipe structure’s dynamic behaviour using the fundamental modal parameter as the indicator for its health condition. A finite element analysis utilising Abaqus software has been adapted to model the problem. The corrosion problem was simulated by thickness reduction on six damage cases. The influence of the severity and position of damage on the observed mode upon the percentage of natural frequencies’ reduction and localisation of mode shape of the pipe structure are subsequently displayed. Four mode shapes and its corresponding natural frequency were extracted from baseline model to further evaluate the sensitivity of the selected mode towards the presence of damage. The study found that severe damage in pipe structure leads to significant reduction of natural frequency and localisation of mode shape in the vicinity of damaged region. The vibration results summarised in this paper may serve as a benchmark for researchers and as a reference for design engineers.

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“…On the other hand, technological modes of pipes production predetermine the appearance of significant discontinuity that will cause a high level of internal structural stresses with reduced material resistance to fracture [3,4].…”

Section: Introductionmentioning

confidence: 99%

The microhardness and internal stresses allocation in superheating pipes welded node made of dissimilar steels

et al. 2017

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Abstract. The object of research is the welded knot made of dissimilar steels 12Cr1MoV and Di-59. Research methods are spectral analysis, microhardness measurements and X-ray analysis. It is established that the structural-phase nonuniformity, significant concentration fluctuations of alloying elements, the spread in values of microhardness and mechanical characteristics along the length of the pipe can cause significant value of internal macrostress that leads to the formation of the "flaw" defect type in the welding process. It is shown how to distinguish between flaws that have appeared on the stage of production from operating flaws.

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X-ray investigation of a heterogeneous steel weld

Cited by 9 publications

References 22 publications

Intelligent Testing and Analysis of Dissimilar Steel Welds for Industrial Throttle Flowmeter

Intelligent Testing and Analysis of Dissimilar Steel Welds for Industrial Throttle Flowmeter

Damage Assessment Based on Modal Analysis of Pipe Structure

The microhardness and internal stresses allocation in superheating pipes welded node made of dissimilar steels

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