Use of the method of acoustic emission for determining the mechanical properties of pipe steels

Мерсон, Д. Л.; Chernyaeva, E. V.

doi:10.1007/s11041-007-0048-z

Cited by 3 publications

(3 citation statements)

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“…The AE behaviour in structural materials during deformation, fracture and other processes continues to be systematically examined with advances in AE measuring systems and signal processing methods. Extensive studies of AE behaviour under tension of Armco (pure) iron and ultra-low carbon steels [1][2][3] as well as two-phased (ferrite-pearlite) low carbon steels (<0.2%C) [4][5][6][7][8][9][10][11][12][13][14] unnotched specimens were conducted.…”

Section: Introductionmentioning

confidence: 99%

“…As a result of the tensile process of structural low carbon steel (i.e. Q235, Q345 steels), AE signals with the typical features at different stages of loading are generated [4][5][6][7][8][9][10][11][12]. The beginning of plastic deformation is detected by AE in two stages [7].…”

Section: Introductionmentioning

confidence: 99%

“…The AE signals show a waveform with a long rise time and low amplitude. The peak of the signal frequency spectrum occurs at the relatively high frequencies of 170 kHz [12] and 270-300 kHz [11].…”

Section: Introductionmentioning

confidence: 99%

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Archives of Metallurgy and Materials

Lyasota,

Sarniak,

Kustra

2019

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This paper presents results obtained from a laboratory investigation conducted on material from a pressure vessel after longterm operation in the oil refinery industry. The tested material contained structural defects which arose from improper heat treatment during steel plate manufacturing. Complex tensile tests with acoustic emission signal recording were conducted on both notched and unnotched specimens. The detailed analysis of different acoustic emission criteria allowed as to detect each stage of plastic deformation and microstructural damage processes after a long-term operation, and unused carbon steels during quasi-static axial tension testing. The acoustic emission activity, generated in the typical stages of material deformation, was correlated by microscopy observations during the tensile test. The results are to be used as the basis for new algorithms for the assessment of the structural condition of in-service pressure equipment.

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