Using split Hopkinson pressure bars to perform large strain compression tests on polyurea at low, intermediate and high strain rates

J Shim, D Mohr - International journal of impact engineering, 2009 - Elsevier
The strain rate sensitivity of polyurea is characterized using a modified split Hopkinson
pressure bar (SHPB) system. The device is composed of a hydraulic piston along with nylon …

Effect of strain rate on the forming behaviour of sheet metals

P Verleysen, J Peirs, J Van Slycken, K Faes… - Journal of Materials …, 2011 - Elsevier
The strain rate dependence of plastic yield and failure properties displayed by most metals
affects energies, forces and forming limits involved in high speed forming processes. This …

Symmetric split Hopkinson compression and tension tests using synchronized electromagnetic stress pulse generators

H Nie, T Suo, X Shi, H Liu, Y Li, H Zhao - International Journal of Impact …, 2018 - Elsevier
This work presents an original impact testing arrangement and its applications using two
identical synchronized stress pulses to load symmetrically the specimen sandwiched …

Membrane curvatures and stress-strain full fields of axisymmetric bulge tests from 3D-DIC measurements. Theory and validation on virtual and experimental results

G Machado, D Favier, G Chagnon - Experimental mechanics, 2012 - Springer
The bulge test is mostly used to analyze equibiaxial tensile stress state at the pole of inflated
isotropic membranes. Three-dimensional digital image correlation (3D-DIC) technique …

Investigation on formability enhancement of 5A06 aluminium sheet by impact hydroforming

Y Ma, Y Xu, SH Zhang, D Banabic, A Abd El-Aty… - CIRP Annals, 2018 - Elsevier
High strain rate (HSR) forming has been found to be able to enhance the formability of sheet
metals like electro-magnetic forming. Impact hydroforming (IHF) is proposed, in which the …

Evaluation of stress–strain curve estimates in dynamic experiments

D Mohr, G Gary, B Lundberg - International Journal of Impact Engineering, 2010 - Elsevier
Accurate measurements of the forces and velocities at the boundaries of a dynamically
loaded specimen may be obtained using split Hopkinson pressure bars (SHPB) or other …

Combined experimental and numerical analysis of bulge test at high strain rates using split Hopkinson pressure bar apparatus

M Ramezani, ZM Ripin - Journal of Materials Processing Technology, 2010 - Elsevier
High strain rate bulge test technique which is introduced in this paper adopts a rubber-pad
as pressure carrying medium to bulge a sheet metal at high velocity using split Hopkinson …

A new measurement technology for forming limit in aluminum alloy under biaxial dynamic loading

S Chen, D Cai, H Jiang, G Li, J Cui - Journal of Materials Processing …, 2023 - Elsevier
The realization of the high-speed biaxial tension process is vital for describing the complex
strain path, constructing forming limit diagrams, and predicting formability under dynamic …

Determination of the forming limit of impact hydroforming by frictionless full zone hydraulic forming test

Y Ma, S Chen, D Chen, D Banabic, H Song… - International Journal of …, 2021 - Springer
It is impossible to obtain the forming limit curve (FLC) by full zone hydraulic forming test
under quasi-static (QS) condition since the liquid will leak from the notches of the specimen …

An exact solution for mechanical behavior of BFRP Nano-thin films embedded in NEMS

WA Altabey - Advances in nano research, 2017 - techno-press.org
Abstract Knowledge of thin films mechanical properties is strongly associated to the
reliability and the performances of Nano Electro Mechanical Systems (NEMS). In the …