Review of experimental techniques for high rate deformation and shock studies

Field, J. E.; Walley, S. M.; Proud, W. G.; Goldrein, H. T.; Siviour, Clive R.

doi:10.1016/j.ijimpeng.2004.03.005

Cited by 662 publications

(335 citation statements)

References 248 publications

(245 reference statements)

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“…For the offset contact models, the identified results are presented in Figure 10. It can be seen that the identification is significantly worse than that for contact model (1). For the same specimen, the identified Young's modulus from the top and bottom surfaces converges at the left part of the specimen.…”

Section: Over-determined System Solution From Simulated Datamentioning

confidence: 89%

“…Over the years, different strategies for characterising the mechanical behaviour of materials at high strain rates have been developed in the scientific community. A review of the main experimental techniques for high rate tests is available in [1]. Among these techniques the most popular is the so-called the Split Hopkinson Pressure Bar (SHPB) or Kolsky bar.…”

Section: Introductionmentioning

confidence: 99%

“…In the recent decades the SHPB technique has been applied for high strain rate testing of a number of materials. The review paper [1] has many citations on the use of the SHPB, for instance. However, the SHPB procedure suffers a number of shortcomings.…”

Section: Introductionmentioning

confidence: 99%

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Exploration of Saint-Venant’s Principle in Inertial High Strain Rate Testing of Materials

Zhu

Pierron

2015

Exp Mech

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Current high strain rate testing procedures of materials are limited by poor instrumentation which leads to the requirement for stringent assumptions to enable data processing and constitutive model identification. This is the case for instance for the well known Split Hopkinson Pressure Bar (SHPB) apparatus which relies on strain gauge measurements away from the deforming sample. This paper is a step forward in the exploration of novel tests based on time and space resolved kinematic measurements obtained through ultra-high speed imaging. The underpinning idea is to use acceleration fields obtained from temporal differentiation of the full-field deformation maps measured through techniques like Digital Image Correlation (DIC) or the grid method. This information is then used for inverse identification with the Virtual fields Method. The feasibility of this new methodology has been verified in the recent past on a few examples. The present paper is a new contribution towards the advancement of this idea. Here, inertial impact tests are considered. They consist of firing a small steel ball impactor at rectangular free standing quasi-isotropic composite specimens. One of the main contributions of the work is to investigate the issue of through-thickness heterogeneity of the kinematic fields through both numerical simulations (3D finite element model) and actual tests. The results show that the parasitic effects arising from non-uniform through-the-thickness loading can successfully be mitigated by the use of longer specimens, making use of Saint-Venant's principle in dynamics.

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Section: Over-determined System Solution From Simulated Datamentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

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Exploration of Saint-Venant’s Principle in Inertial High Strain Rate Testing of Materials

Zhu

Pierron

2015

Exp Mech

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“…With this kind of device, strain rates up to 10 3 s −1 can typically be obtained [19]. A review of the use of SHPB can be found in [27].…”

Section: Methodsmentioning

confidence: 99%

Full-Field Strain Measurement and Identification of Composites Moduli at High Strain Rate with the Virtual Fields Method

et al. 2010

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. Abstract The present paper deals with full-field strain measurement on glass/epoxy composite tensile specimens submitted to high strain rate loading through a split Hopkinson pressure bar (SHPB) device and with the identification of their mechanical properties. First, the adopted methodology is presented: the device, including an Ultra-High Speed camera, and the experimental procedure to obtain relevant displacement maps are described. The different full-field results including displacement, strain and acceleration maps for two mechanical tests are then addressed. The last part of the paper deals with an original procedure to identify stiffnesses on this dynamic case only using the actual strain and acceleration maps (without the applied force) by using the Virtual Fields Method.

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“…2(b-e), showing the indenter impacting the surface and the generation of a crater. Strain rate estimations of these impacts, assuming an initial contact diameter of 0.2 mm on impact, indicate that a falling speed of 3.13 ms -1 can give a peak strain rate along the surface of >10 4 s -1 , which is around the upper boundary for Hopkinson bar tests [14]. The total kinetic energy (KE) applied on contact is calculated at 2.94 J.…”

Section: Methodsmentioning

confidence: 99%

Plastic deformation of polycrystalline alumina introduced by scaled-down drop-weight impacts

et al. 2016

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Review of experimental techniques for high rate deformation and shock studies

Cited by 662 publications

References 248 publications

Exploration of Saint-Venant’s Principle in Inertial High Strain Rate Testing of Materials

Exploration of Saint-Venant’s Principle in Inertial High Strain Rate Testing of Materials

Full-Field Strain Measurement and Identification of Composites Moduli at High Strain Rate with the Virtual Fields Method

Plastic deformation of polycrystalline alumina introduced by scaled-down drop-weight impacts

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