Staging of a localized plastic deformation during extension of D16AT alloy specimens based on the data of acoustic emission, mapping of surface deformations, and strain gauging. 1. Specimens with holes of different diameters

Panin, S. V.; Byakov, A. V.; Lyubutin, P. S.; Bashkov, O. V.

doi:10.1134/s1061830911090075

Cited by 6 publications

(4 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is accompanied by the appearance of a segment with a negative value of the strain strengthening coefficient in the loading diagram. This effect was not observed for specimens with central holes and three semicircular incisions positioned at different distances from one another [1,6]. The long straining of a specimen at the growth stage of a major crack is considered to be due to the formation of an extended zone of a localized plastic deformation in the region of the notch apex.…”

Section: Discussionmentioning

confidence: 94%

“…As was done above, the stages were distinguished for the strain gauging data. In complete accordance with the technique used in the previous study [1], characteristic stages of changes in the parameter γ norm.dif were distinguished. These data are listed in Table 3.…”

Section: Shear Deformation Intensitymentioning

confidence: 96%

“…The main and most significant difference in the development of deformations between the specimens with notches of different depths and both the above described specimens with holes [1] and the specimens with three notches [4], for which no "falling" section is observed in the σ-ε diagram, is that a segment with a negative value of the strain strengthening coefficient (SSC) is explicitly exhibited for the specimens with notches ( Fig. 2, denoted with III).…”

Section: Loading Diagramsmentioning

confidence: 99%

“…In the first part of this study [1], we analyzed the behavior of specimens with a hole; in this case, the latter provided the deformation localization with a relatively low degree of stress concentration and phys ically modeled the presence of this type of flaw in the material (object). In order to physically model the influence of a crack type flaw and to change the type of the deflected mode, which is caused by its pres ence, a flaw of the edge crack type [2] was applied to Д16АТ specimens in the second part of this study.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Staging of a localized plastic deformation upon the tension of Д16AT alloy specimens on the basis of acoustic emission, surface deformation mapping, and strain gauging data. II. Specimens with notches of different depths

Panin

Byakov

Lyubutin

et al. 2011

Russ J Nondestruct Test

Self Cite

View full text Add to dashboard Cite

Studies of the development of deformations and damage in 16AT alloy specimens with side notches, which modeled cracks in objects, were performed by combining the acoustic emission, surface deformation mapping, and strain gauging methods. It was shown that a significant portion of the loading time is associated with crack propagation, which is accompanied by the appearance of a segment with a negative value of the strain strengthening coefficient in loading diagrams. According to the data from the correlation of digital images at the plastic deformation stage (within stage 2), two substages were distinguished: the first is related to the deformation localization directly at the notch apex, while the second is associated with an increase in the area of this region to dimensions that are comparable with the specimen cross section. It was revealed that, in the case of a significantly localized deformation, the staging based approach to the analysis of deformation and fracturing processes is characterized by the better correlation between data that are recorded by different in situ methods.

show abstract

Section: Discussionmentioning

confidence: 94%

Section: Shear Deformation Intensitymentioning

confidence: 96%

Section: Loading Diagramsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations