Material characterization at high strain by adapted tensile tests

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Emmens, W.C. and Boogaard van den, A.H. (2012) Material characterization at high strain by adapted tensile tests. Experimental mechanics, 52 (8). 1195 - 1209. ISSN 0014-4851

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Abstract:The strength of materials at high strain levels has
been determined using the so-called Continuous-Bendingunder-
Tension (CBT) test. This is a modified tensile test
where the specimen is subjected to repetitive bending at the
same time. This test enables to create high levels of uniform
strain. A wide variety of materials has been tested this way.
The strength of the material after CBT testing has been
measured in different ways: by secondary tensile tests, by
interrupted CBT tests, and directly from the fracture in the
CBT test. All methods yield similar results: the strength is
largely unaffected by the cyclic pre-deformation and mainly
depends on the overall increase in length. Only for multiphase
materials the strength shows a minor influence of
CBT test conditions. The hardening follows the extrapolated
hardening observed in a conventional tensile test, except for
brass. This test method can potentially be used for measuring
hardening curves at high strain levels.
Item Type:Article
Copyright:© 2012 The Author(s)
Faculty:
Engineering Technology (CTW)
Research Chair:
Research Group:
Link to this item:http://purl.utwente.nl/publications/81451
Official URL:http://dx.doi.org/10.1007/s11340-011-9577-x
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Metis ID: 282103