Acoustic-emission testing of multiple-pass welding defects of large-size constructions

Степанова, Л. Н.; Kabanov, S. I.; Ramazanov, I. S.; Lebedev, E. Yu.; Kireenko, V. V.; Vonsovskii, A. V.; Kinzhagulov, I. Yu.

doi:10.1134/s1061830915090089

Cited by 6 publications

(6 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides detecting a defect, Stephanova et. al [83], have demonstrated the use of time arrival analysis and floating threshold to detect and locate defects such as pores, cracks, slag, as well as faulty fusion.…”

Section: Application Of Acoustic Methods For Monitoring Arc Welding Processmentioning

confidence: 99%

“…Defects such as burn through [49,50,52,59], cavity [56], lack of fusion [52] humping [53] and penetration condition [54,103] could be detect or characterize from the trend of those features. Apart from common statistical features, other features such as sound pressure level [49,72,87], sound pressure deviation [62,63] and time of delay [49,83] also have been demonstrated. Unlike the analysis of air-borne acoustic signal, the structure-borne acoustic emission is characterized by its specific features such as AE count, AE RMS, AE Energy and so forth [9,82,84,92,96].…”

Section: Feature Extraction and Noise Eliminationmentioning

confidence: 99%

See 1 more Smart Citation

Acoustic methods in real-time welding process monitoring: Application and future potential advancement

Yusof

Ishak

Ghazali

2021

JMES

View full text Add to dashboard Cite

The rapid advancement of the welding technology has simultaneously increased the demand for the online monitoring system in order to control the process. Among the methods that could be possibly used to assess the weld condition, an air-borne acoustic method grasps the attention from scholars due to its ability to provide a simple, non-contact, and low-cost measurement system. However, it is still lack of resources involving this subject in an attempt to deeply understand the emitted sound behaviour during welding especially when dealing with a complete deviation of a process parameter, welding types, workpiece material as well as the noise from the surrounding. This paper reviews the application of the acoustic method in monitoring the welding process. Specifically, this review emphasized the source of both structure-borne and air-borne acoustic during the welding process and the significance of applying the acoustic method in more detail. By focusing on the liquid state welding process, the scope of discussion converged on the arc and laser welding process. In the last part of this review, the potential future advancement of this method is pointed out before the overall conclusion is made.

show abstract

Section: Application Of Acoustic Methods For Monitoring Arc Welding Processmentioning

confidence: 99%

Section: Feature Extraction and Noise Eliminationmentioning

confidence: 99%

Acoustic methods in real-time welding process monitoring: Application and future potential advancement

Yusof

Ishak

Ghazali

2021

JMES

View full text Add to dashboard Cite

show abstract

“…; thus, they have become the preferred pipes for urban gas transportation . The safety of nonmetallic pipelines has also attracted increasing attention, and its evaluation will attract large economic interests and will undergo future development . 163 cases of PE pipeline failure in 4 companies were investigated, and it was found that the third-party damage accounted for 59% of the cases.…”

Section: Introductionmentioning

confidence: 99%

Application of Terahertz Nondestructive Testing Technology in the Detection of Polyethylene Pipe Defects

et al. 2023

View full text Add to dashboard Cite

At present, polyethylene pipeline is widely used in urban gas projects, but a relatively mature and reliable nondestructive testing technology has not been formed. Therefore, it is urgent to develop a new nondestructive testing technology to meet the increasing demand for inspection of non-metallic pipes. The terahertz testing technology and related equipment have played an increasingly important role in the nondestructive testing of many nonmetallic structures, but they have not been applied to polyethylene (PE) pipes. In this work, terahertz time-domain spectroscopy was used to detect prefabricated defects inside the PE pipe specimens. The results show that the terahertz nondestructive testing technology can be used to detect common defects in nonblack PE pipes with a detection error of less than 10%. Higher-power terahertz devices can detect defects in black PE pipe, while lower-power terahertz devices cannot. Because the black PE pipe contains carbon and has a strong absorption of terahertz waves. The penetration of lower-power terahertz devices to the black PE pipe is not enough, resulting in a low resolution of the imaging. The results of this work may promote the progress of the nondestructive testing technology of nonmetallic pipelines.

show abstract

“…Forming mechanism and control measures are major focus of current investigations of weld pore defects [ 10 – 13 ]. In small-scale tests, welding can be interrupted by an artificially implanted defect, allowing formation of a pore defect at specific conditions [ 14 ]. However, stress distribution around a pore defect cannot be empirically observed.…”

Section: Introductionmentioning

confidence: 99%

Investigation on size tolerance of pore defect of girth weld pipe

Shuai

2018

PLoS ONE

View full text Add to dashboard Cite

Welding quality control is an important parameter for safe operation of oil and gas pipes, especially for high-strength steel pipes. Size control of welding defect is a bottleneck problem for current pipe construction. As a key part of construction procedure for butt-welding of pipes, pore defects in girth weld is difficult to ignore. A three-dimensional non-linear finite element numerical model is established to study applicability of size control indices based on groove shape and softening phenomenon of material in heat-affected zone of practical pipe girth weld. Taking design criteria of pipe as the basis, basic tensile, extremely tensile and extremely compressive loading conditions are determined for pipe stress analysis, and failure criteria based on flow stress is employed to perform stress analysis for pipe girth weld with pore defect. Results show that pipe girth welding stresses of pores at various radial locations are similar. Whereas, stress for pores of different sharpness varied significantly. Besides, tolerance capability of API 5L X90 grade pipe to pore defect of girth weld is lower than that of API 5L X80 grade pipe, and size control index of 3 mm related to pore defect in current standards is applicable to API 5L X80 and X90 grade girth welded pipes with radially non-sharp pore defects.

show abstract

Acoustic-emission testing of multiple-pass welding defects of large-size constructions

Cited by 6 publications

References 2 publications

Acoustic methods in real-time welding process monitoring: Application and future potential advancement

Acoustic methods in real-time welding process monitoring: Application and future potential advancement

Application of Terahertz Nondestructive Testing Technology in the Detection of Polyethylene Pipe Defects

Investigation on size tolerance of pore defect of girth weld pipe

Contact Info

Product

Resources

About