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Characterization of heterogeneous arc welds through miniature tensile testing and Vickers hardness mapping

(2016) MATERIALI IN TEHNOLOGIJE. 50(4). p.571-574
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Abstract
The heterogeneity of arc-welded connections is often ignored in structural assessments, giving rise to inaccuracies. Improved assessments taking into account heterogeneity require the characterization of local constitutive properties. We have compared two methods to do this: Vickers-hardness mapping and miniature tensile testing. Whereas the former is more straightforward to apply, the latter provides full-range stress-strain data. This paper discusses an experimental comparison of both methods on a heterogeneous arc weld. Miniature tensile tests were performed, using digital image correlation to measure the strain. The specimens were indented to compare their stress-strain response with Vickers hardness. Notwithstanding that small natural flaws invalidated some tests, reliable stress-strain curves were obtained. Vickers hardness testing is a convenient alternative if the yield and ultimate tensile strength are the only points of interest and the corresponding conversion inaccuracy is acceptable.
Keywords
arc weld, heterogeneity, hardness, digital image correlation, miniature tensile testing

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MLA
Hertelé, Stijn, et al. “Characterization of Heterogeneous Arc Welds through Miniature Tensile Testing and Vickers Hardness Mapping.” MATERIALI IN TEHNOLOGIJE, vol. 50, no. 4, 2016, pp. 571–74.
APA
Hertelé, S., Bally, J., Gubeljak, N., Stefane, P., Verleysen, P., & De Waele, W. (2016). Characterization of heterogeneous arc welds through miniature tensile testing and Vickers hardness mapping. MATERIALI IN TEHNOLOGIJE, 50(4), 571–574.
Chicago author-date
Hertelé, Stijn, Jonas Bally, Nenad Gubeljak, Primoz Stefane, Patricia Verleysen, and Wim De Waele. 2016. “Characterization of Heterogeneous Arc Welds through Miniature Tensile Testing and Vickers Hardness Mapping.” MATERIALI IN TEHNOLOGIJE 50 (4): 571–74.
Chicago author-date (all authors)
Hertelé, Stijn, Jonas Bally, Nenad Gubeljak, Primoz Stefane, Patricia Verleysen, and Wim De Waele. 2016. “Characterization of Heterogeneous Arc Welds through Miniature Tensile Testing and Vickers Hardness Mapping.” MATERIALI IN TEHNOLOGIJE 50 (4): 571–574.
Vancouver
1.
Hertelé S, Bally J, Gubeljak N, Stefane P, Verleysen P, De Waele W. Characterization of heterogeneous arc welds through miniature tensile testing and Vickers hardness mapping. MATERIALI IN TEHNOLOGIJE. 2016;50(4):571–4.
IEEE
[1]
S. Hertelé, J. Bally, N. Gubeljak, P. Stefane, P. Verleysen, and W. De Waele, “Characterization of heterogeneous arc welds through miniature tensile testing and Vickers hardness mapping,” MATERIALI IN TEHNOLOGIJE, vol. 50, no. 4, pp. 571–574, 2016.
@article{8040408,
  abstract     = {The heterogeneity of arc-welded connections is often ignored in structural assessments, giving rise to inaccuracies. Improved assessments taking into account heterogeneity require the characterization of local constitutive properties. We have compared two methods to do this: Vickers-hardness mapping and miniature tensile testing. Whereas the former is more straightforward to apply, the latter provides full-range stress-strain data. This paper discusses an experimental comparison of both methods on a heterogeneous arc weld. Miniature tensile tests were performed, using digital image correlation to measure the strain. The specimens were indented to compare their stress-strain response with Vickers hardness. Notwithstanding that small natural flaws invalidated some tests, reliable stress-strain curves were obtained. Vickers hardness testing is a convenient alternative if the yield and ultimate tensile strength are the only points of interest and the corresponding conversion inaccuracy is acceptable.},
  author       = {Hertelé, Stijn and Bally, Jonas and Gubeljak, Nenad and Stefane, Primoz and Verleysen, Patricia and De Waele, Wim},
  issn         = {1580-2949},
  journal      = {MATERIALI IN TEHNOLOGIJE},
  keywords     = {arc weld,heterogeneity,hardness,digital image correlation,miniature tensile testing},
  language     = {eng},
  number       = {4},
  pages        = {571--574},
  title        = {Characterization of heterogeneous arc welds through miniature tensile testing and Vickers hardness mapping},
  url          = {http://dx.doi.org/10.17222/mit.2015.157},
  volume       = {50},
  year         = {2016},
}

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