Analysis of elastic waves from two-point strain measurement

Lundberg, Bengt; Henchoz, Alain

doi:10.1007/bf02324491

Cited by 102 publications

(52 citation statements)

References 2 publications

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“…Some of these techniques include flyer plate impact, Taylor impact, drop tower methods, and pressure shear experiments, but perhaps the most widely used would be the Kolsky bar or split Hopkinson pressure bar (SHPB). Since its original development by Kolsky [13] the method has seen much refinement; most developments for low impedance materials involve polymeric bars [14,15] and associated dispersion corrections [16], wave separation [17,18], pulse shaping [19,20], long bar lengths [21], high sensitivity semiconductor strain gages, hollow transmission bars [22], or embedded quartz load cells [23]. Each evolution poses advantages and shortcomings and none have proven to be ideal for all materials or loading conditions.…”

Section: Introductionmentioning

confidence: 99%

The Rate Dependent Tensile Response of Polycarbonate and Poly-methylmethacrylate

Foster¹,

Love

Kaste

et al. 2015

J. dynamic behavior mater.

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The tensile mechanical response of polycarbonate and polymethyl-methacrylate is investigated across a range of strain rates from 0.001 to 1600 s -1 . Traditional standard ASTM tensile experiments are limited to low strain rates and do not give quantitative data for plastic behavior for strain softening materials. In this study, a novel specimen and gripping geometry is designed and verified to mitigate wave reflections present in previous high strain rate tensile experiments. Digital image correlation is used to extract local deformation measurements, and a Kolsky bar technique typically used for fiber experiments is adapted for soft polymers. The insights gathered in this study will provide a further step toward a high fidelity material model for both ductile and brittle polymers.

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Section: Introductionmentioning

confidence: 99%

The Rate Dependent Tensile Response of Polycarbonate and Poly-methylmethacrylate

Foster¹,

Love

Kaste

et al. 2015

J. dynamic behavior mater.

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show abstract

“…Some authors - Lundberg & Henchoz (1977), Yanagihara (1978), Zhao & Gary (1997), Jacquelin & Hamelin (2001) -have carried out two measurements on each bar. The pioneers in this respect were Lundberg & Henchoz (1977) and Yanagihara (1978), who independently developed a wave separation technique based on one-dimensional wave propagation theory.…”

Section: Long-time Measurementsmentioning

confidence: 99%

“…The pioneers in this respect were Lundberg & Henchoz (1977) and Yanagihara (1978), who independently developed a wave separation technique based on one-dimensional wave propagation theory. Their methods didn't take into account the wave dispersion.…”

Section: Long-time Measurementsmentioning

confidence: 99%

Testing With Bars From Dynamic to Quasi-static

Gary

2014

Constitutive Relations Under Impact Loadings

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“…For time-harmonic simulations carried out with COMSOL, 11 either Type 1 or Type 2 VPC structure composed of 10 unit cells is inserted in the middle of an elastic Lucite medium (c l ¼ 2672 m=s, c s ¼ 1091 m=s, and q ¼ 1200 kg=m 3 ), and the following dissipation measure is calculated: where P I , P T , and P R denote the incident, transmitted, and reflected wave powers, respectively. The two point method 12 was used to calculate P R and P I .…”

Section: Wave Attenuation and Dissipation Mechanisms In Viscoelastic mentioning

confidence: 99%