Recommended Practice for Dynamic Testing for Sheet Steels - Development and Round Robin Tests

An Improved Test Procedure for Measurement of Dynamic Tensile Mechanical Properties of Automotive Sheet Steels

“…Implementing the detailed recommendations proposed in this paper is expected to improve the accuracy and precision, in dynamic tensile mechanical property measurements of high strength sheet steels at high strain rates. They also compliment those more general recommendations which have been published within the last year[5] [7] and another, which is still in draft [8].…”

“…The specimen gauge length may be increased and actuator speed reduced to derive dynamic property measurements at lower strain rates. A Euronorm standard for high velocity testing is not in place, although general recommendations for dynamic tensile testing of sheet steels has recently been published[5] [7] and in draft [8]. These documents were used as a guide to the current high speed specimen design and development of test procedures.…”

A new method for determination of plastic deformation properties at high strain rate and its modelling

“…The disadvantage is that this pre-condition usually cannot be met due to the short test duration at high-required speeds and the requirement of a certain high strain rate. Other researchers [5][6][7] reported that forces are measurable with reduced oscillations when strain gauge sensors (SGS) for force measurement are placed on the lower sample shoulder area above the sample clamping area at a strain rate of up to 200 /s. Beyond 200 /s, strong force oscillations are unavoidable, and the common practice is to filter the high-speed tensile force-displacement curves to obtain smooth stress-strain curves.…”

Development of experimental and numerical methodologies for the investigation of composite and hybrid metal-composite fastened joints subjected to impact loads

“…During this phenomenon, the stress waves generated by the impact event cause oscillations of the testing system near its natural frequency and superimpose a fluctuating signal onto the 'true' material response [43]. Aiming to address such 'noise' effects, several researchers, research projects [43,44,[53][54][55][56] and test frame manufacturers have tried to separate and attenuate these false signals, which are emerged at impact events, with a proper selection of the testing parameters. In particular, critical attention is paid on the load train design (i.e.…”