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Novel technique for static and dynamic shear testing of Ti6Al4V sheet

Jan Peirs (UGent) , Patricia Verleysen (UGent) and Joris Degrieck (UGent)
(2012) EXPERIMENTAL MECHANICS. 52(7). p.729-741
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Abstract
Few shear test techniques exist that cover the range of strain rates from static to dynamic. In this work, a novel specimen geometry is presented that can be used for the characterisation of the shear behaviour of sheet metals over a wide range of strain rates using traditional tensile test devices. The main objectives during the development of the shear specimen have been 1) obtaining a homogeneous stress state with low stress triaxiality in the zone of the specimen subjected to shear and 2) appropriateness for dynamic testing. Additionally, avoiding premature specimen failure due to edge effects was aimed at. Most dimensional and practical constraints arose from the dynamic test in which the specimen is loaded by mechanical waves in a split Hopkinson tensile bar device. Design of the specimen geometry is based on finite element simulations using ABAQUS/Explicit. The behaviour of the specimen is compared with the more commonly used simple shear specimen with clamped grips. Advantages of the new technique are shown. The technique is applied to Ti6Al4V sheet. During the high strain rate experiments high speed photography and digital image correlation are used to obtain the local shear strain in the specimen. Comparison of experimental and numerical results shows good correspondence.
Keywords
HIGH-STRAIN RATES, DIGITAL IMAGE CORRELATION, PLASTIC ANISOTROPY, CONSTITUTIVE RELATION, ROLLED SHEETS, DEFORMATION, STEEL, BEHAVIOR, STRESS, METALS, Shear test, Split Hopkinson bar, High strain rate, Ti6Al4V, Triaxiality

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MLA
Peirs, Jan, Patricia Verleysen, and Joris Degrieck. “Novel Technique for Static and Dynamic Shear Testing of Ti6Al4V Sheet.” EXPERIMENTAL MECHANICS 52.7 (2012): 729–741. Print.
APA
Peirs, J., Verleysen, P., & Degrieck, J. (2012). Novel technique for static and dynamic shear testing of Ti6Al4V sheet. EXPERIMENTAL MECHANICS, 52(7), 729–741.
Chicago author-date
Peirs, Jan, Patricia Verleysen, and Joris Degrieck. 2012. “Novel Technique for Static and Dynamic Shear Testing of Ti6Al4V Sheet.” Experimental Mechanics 52 (7): 729–741.
Chicago author-date (all authors)
Peirs, Jan, Patricia Verleysen, and Joris Degrieck. 2012. “Novel Technique for Static and Dynamic Shear Testing of Ti6Al4V Sheet.” Experimental Mechanics 52 (7): 729–741.
Vancouver
1.
Peirs J, Verleysen P, Degrieck J. Novel technique for static and dynamic shear testing of Ti6Al4V sheet. EXPERIMENTAL MECHANICS. Springer; 2012;52(7):729–41.
IEEE
[1]
J. Peirs, P. Verleysen, and J. Degrieck, “Novel technique for static and dynamic shear testing of Ti6Al4V sheet,” EXPERIMENTAL MECHANICS, vol. 52, no. 7, pp. 729–741, 2012.
@article{3226859,
  abstract     = {Few shear test techniques exist that cover the range of strain rates from static to dynamic. In this work, a novel specimen geometry is presented that can be used for the characterisation of the shear behaviour of sheet metals over a wide range of strain rates using traditional tensile test devices. The main objectives during the development of the shear specimen have been 1) obtaining a homogeneous stress state with low stress triaxiality in the zone of the specimen subjected to shear and 2) appropriateness for dynamic testing. Additionally, avoiding premature specimen failure due to edge effects was aimed at. Most dimensional and practical constraints arose from the dynamic test in which the specimen is loaded by mechanical waves in a split Hopkinson tensile bar device. Design of the specimen geometry is based on finite element simulations using ABAQUS/Explicit. The behaviour of the specimen is compared with the more commonly used simple shear specimen with clamped grips. Advantages of the new technique are shown. The technique is applied to Ti6Al4V sheet. During the high strain rate experiments high speed photography and digital image correlation are used to obtain the local shear strain in the specimen. Comparison of experimental and numerical results shows good correspondence.},
  author       = {Peirs, Jan and Verleysen, Patricia and Degrieck, Joris},
  issn         = {0014-4851},
  journal      = {EXPERIMENTAL MECHANICS},
  keywords     = {HIGH-STRAIN RATES,DIGITAL IMAGE CORRELATION,PLASTIC ANISOTROPY,CONSTITUTIVE RELATION,ROLLED SHEETS,DEFORMATION,STEEL,BEHAVIOR,STRESS,METALS,Shear test,Split Hopkinson bar,High strain rate,Ti6Al4V,Triaxiality},
  language     = {eng},
  number       = {7},
  pages        = {729--741},
  publisher    = {Springer},
  title        = {Novel technique for static and dynamic shear testing of Ti6Al4V sheet},
  url          = {http://dx.doi.org/10.1007/s11340-011-9541-9},
  volume       = {52},
  year         = {2012},
}

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