The flying wedge: a method for high strain rate tensile testing. Part 2: Characteristics of the device

Cole, B. N.; Sturges, John

doi:10.1016/s0734-743x(03)00003-4

Cited by 11 publications

(4 citation statements)

References 4 publications

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“…1. Full details of the rig can be found elsewhere [1,2], but the main features are briefly described here. The cylindrical tensile specimen with threaded ends is held, through specimen holders, between a pair of sliders that have chamfered faces.…”

Section: Experimental Techniquesmentioning

confidence: 99%

“…The present paper describes procedures used to characterise these properties based on the experimental test rig known as the 'flying wedge' which is capable of producing average strain rates from 10 2 to 5 Â 10 3 s À1 and locally in excess of 10 4 s À1 [1,2]. This allows for the effect of strain rate on material behaviour to be investigated over a wider range than possible with other high rate testing methods, e.g.…”

Section: Introductionmentioning

confidence: 99%

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Determination of the high strain rate fracture properties of ductile materials using a combined experimental/numerical approach

Barton¹

2004

International Journal of Impact Engineering

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Section: Experimental Techniquesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Determination of the high strain rate fracture properties of ductile materials using a combined experimental/numerical approach

Barton¹

2004

International Journal of Impact Engineering

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“…Strain rates up to 10 4 s −1 can be attained by the SHB. An alternative dynamic tensile testing facility, known as the Flying Wedge, which is capable of generating strain rates from 10 2 s −1 up to in excess of 10 4 s −1 , has been developed and used at Leeds University for several decades [8].…”

Section: Introductionmentioning

confidence: 99%

A comparative study on the restrictions of dynamic test methods

Majzoobi

Lahmi

2015

EPJ Web of Conferences

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Abstract. Dynamic behavior of materials is investigated using different devices. Each of the devices has some restrictions. For instance, the stress-strain curve of the materials can be captured at high strain rates only with Hopkinson bar. However, by using a new approach some of the other techniques could be used to obtain the constants of material models such as Johnson-Cook model too. In this work, the restrictions of some devices such as drop hammer, Taylor test, Flying wedge, Shot impact test, dynamic tensile extrusion and Hopkinson bars which are used to characterize the material properties at high strain rates are described. The level of strain and strain rate and their restrictions are very important in examining the efficiency of each of the devices. For instance, necking or bulging in tensile and compressive Hopkinson bars, fragmentation in dynamic tensile extrusion and petaling in Taylor test are restricting issues in the level of strain rate attainable in the devices.

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“…Unfortunately, with the SHPB technique, neither the velocity nor the force is imposed. This inconvenience has resulted in apparatus like the flywheel [12,15] or flying wedge [2,16]. For such apparatus, the tensile loading is obtained by applying a displacement at a constant velocity.…”

Section: Introductionmentioning

confidence: 99%

Design of an Impact Loading Machine Based on a Flywheel Device: Application to the Fatigue Resistance of the High Rate Pre-straining Sensitivity of Aluminium Alloys

et al. 2007

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This paper presents a device that has been designed for tensile loading at medium impact rates (up to 10 3 s -1 ) and for performing either interrupted or failure tests. This machine allows us to apply prescribed prestraining to the specimen, and then apply subsequent loading histories such as impact fatigue. Two specimen loading systems are considered, which make it possible to carry out tests with various ranges of force and various durations of time. A multi-CCD camera system is triggered by a chosen threshold from the force signal. The system is dedicated to the displacement measurement and gives both qualitative and quantitative information about the stretching mechanism leading to fracture. To illustrate the performance of the device, experimental results concerning impact tensile tests at a strain rate of about 300 s -1 are presented, as well as consecutive impact-fatigue tests on two aluminium alloys.

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The flying wedge: a method for high strain rate tensile testing. Part 2: Characteristics of the device

Cited by 11 publications

References 4 publications

Determination of the high strain rate fracture properties of ductile materials using a combined experimental/numerical approach

Determination of the high strain rate fracture properties of ductile materials using a combined experimental/numerical approach

A comparative study on the restrictions of dynamic test methods

Design of an Impact Loading Machine Based on a Flywheel Device: Application to the Fatigue Resistance of the High Rate Pre-straining Sensitivity of Aluminium Alloys

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