Taylor impact of polyether ether ketone

Millett, J. C. F.; Bourne, N. K.; Stevens, G.S.

doi:10.1016/j.ijimpeng.2004.09.008

Cited by 33 publications

(17 citation statements)

References 16 publications

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“…The complex loading in compression of the Taylor test, where stress, strain rate, and final strain vary within the specimen makes it an ideal test for validating constitutive models, where the complex loading is thought to provide a more robust test of the model [36]. In polymers, the test has been used to understand the behavior of the materials under complex loading for modeling efforts [108][109][110][111][112][113] and to elucidate phase transitions in the polymeric materials [12,114].…”

Section: Dynamic Loading: Taylor Tests and Dynamic Tensile Extrusionmentioning

confidence: 99%

High Strain Rate Mechanics of Polymers: A Review

Siviour

Jordan

2016

J. dynamic behavior mater.

284

121

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The mechanical properties of polymers are becoming increasingly important as they are used in structural applications, both on their own and as matrix materials for composites. It has long been known that these mechanical properties are dependent on strain rate, temperature, and pressure. In this paper, the methods for dynamic loading of polymers will be briefly reviewed. The high strain rate mechanical properties of several classes of polymers, i.e. glassy and rubbery amorphous polymers and semi-crystalline polymers will be reviewed. Additionally, time-temperature superposition for rate dependent large strain properties and pressure dependence in polymers will be discussed. Constitutive modeling and shock properties of polymers will not be discussed in this review.

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Section: Dynamic Loading: Taylor Tests and Dynamic Tensile Extrusionmentioning

confidence: 99%

High Strain Rate Mechanics of Polymers: A Review

Siviour

Jordan

2016

J. dynamic behavior mater.

284

121

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“…Hutchings (1979) proposed an alternate one-dimensional elastic-plastic wave propagation analysis to calculate the yield stress in polymers and compared it with Taylor's analysis using experimental data on polycarbonate. Millet et al (2006) studied the behavior and failure initiation of poly(ether ether ketone) (PEEK) at velocities in the range of 150-400 m s À1 using high-speed photography. Rae et al (2004) studied the high temperature behavior of poly(tetrafluoroethylene) (PTFE).…”

Section: Introductionmentioning

confidence: 99%

Mechanics of Taylor impact testing of polycarbonate

Sarva

Mulliken

Boyce

2007

International Journal of Solids and Structures

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The deformation of polymers under high-rate loading conditions is a governing factor in their use in impact-resistant applications, such as protective shields, safety glass windows and transparent armor. In this paper, Taylor impact experiments were conducted to examine the mechanical behavior of polycarbonate (PC), under conditions of high strain rate ($10 5 s À1 ) and inhomogeneous deformation. High-speed photography was used to monitor the progression of deformation within the sample. A recently developed three-dimensional large strain rate-dependent elastic-viscoplastic constitutive model which describes the high-rate behavior of glassy polymers was used together with the ABAQUS/Explicit finiteelement code to simulate several Taylor impact conditions. The simulation results are compared directly with experimental images for a range in initial rod dimensions and velocities. Final deformed shapes are found to correspond with those obtained experimentally, demonstrating the ability to predict complex inhomogeneous deformation events during very high-rate impact loading scenarios. The dependence of the observed behaviors on the various features of the polymer stress-strain behavior are presented in detail revealing the roles of strain softening and strain hardening in governing the manner in which deformation progresses in a polymer during dynamic inhomogeneous loading events.

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“…It was also suggested that both PP and PS showed evidence of increased crystallinity due to shock loading. Such a response has been observed in polyether etherketone (PEEK), where Millett et al [21] showed a pronounced discolouration immediately behind the impact face during…”

Section: Introductionmentioning

confidence: 75%

Shear strength measurements in a shock loaded commercial silastomer

Millett¹,

Whiteman²,

Stirk³

et al. 2011

J. Phys. D: Appl. Phys.

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The shock-induced shear strength of a commercial silastomer, trade name Sylgard 184™, has been determined using laterally mounted manganin stress gauges. Shear strength has been observed to increase with increasing shock amplitude, in common with many other materials. Shear strength has also been observed to increase slightly behind the shock front as well. It is believed that a combination of polymer chain entanglement and cross linking between chains is responsible. Finally, a ramp on the leading edge of the lower amplitude stress traces has been observed. It has been suggested that this is due to shock-induced collapse of free space between the polymer chains. Similar explanations have been used to explain the apparent non-linearity of the shock velocity with particle velocity at low shock amplitudes.

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Taylor impact of polyether ether ketone

Cited by 33 publications

References 16 publications

High Strain Rate Mechanics of Polymers: A Review

High Strain Rate Mechanics of Polymers: A Review

Mechanics of Taylor impact testing of polycarbonate

Shear strength measurements in a shock loaded commercial silastomer

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