Tensile deformation of high strength and high modulus polyethylene fibers

Werff, H. van der; Pennings, A. J.

doi:10.1007/bf00657441

Cited by 55 publications

(42 citation statements)

References 42 publications

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“…Van der Werff also provided perspectives on future performance of fiber-based armor. Laboratory investigations on fiber production by Van der Werff [12] and by Wang et al [13] with very low polymer concentrations in the initial solution indicate that strength and modulus values could exceed the comercial values with almost a factor two. Equation (2) indicates that the armor performance can be approximately doubled in terms of energy absorption.…”

Section: Armormentioning

confidence: 99%

Design with Ultra Strong Polyethylene Fibers

Marissen¹

2011

MSA

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Section: Armormentioning

confidence: 99%

Design with Ultra Strong Polyethylene Fibers

Marissen¹

2011

MSA

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“…The largest tensile modulus reported for ultra-oriented PE is 264 GPa (ref. 1) at room temperature and 288 GPa (ref. 37) at 77 K. Macroscopic Young's modulus at room temperature is thus nearly 90% of the calculated/scaled theoretical E z 303 GPa.…”

Section: Skeletal Deformation Of P E Is Accomplished Bymentioning

confidence: 99%

Molecular orbital studies of polyethylene deformation

Crist

Hereña

1996

J. Polym. Sci. B Polym. Phys.

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Young's modulus E for polyethylene in the chain direction is calculated with molecular orbital theory applied to n‐alkanes C3H8 through n‐C13H28 and analyzed with the cluster‐difference method. Semiempirical CNDO, MNDO, and AM1 models and ab initio HF/STO‐3G, HF/6‐31G, HF/6‐31G*, and MP2/6‐31G* models are used. Cluster‐difference results, when extrapolated to infinite chain length, give E in good agreement with moduli evaluated with molecular cluster or crystal orbital methods, provided minimal basis sets are employed. E decreases from 495 GPa (CNDO) to 336 GPa (MP2/6‐31G*) as the level of theory is improved, consistent with established behaviors of the various models. Our calculations do not reproduce earlier molecular cluster or crystal orbital results, which gave E < 330 GPa. The most rigorous MP2/6‐31G* model is known to overestimate force constants by ∼ 11%; the scaled modulus E = 299 GPa is in good accord with E = 306 GPa from recent calculations based on experimental vibration frequencies. © 1996 John Wiley & Sons, Inc.

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“…4, the indicative value for e f is 7.36 9 10 -2 % (annealed) and 7.68 9 10 -6 % (non-annealed); i.e., permanent strain from viscous flow effects is predicted to be comparatively negligible in both cases. Relevant published work is limited, though some comparison may be made with cyclic deformation studies on UHMWPE fibres [25]: here, complete viscoelastic recovery with no plastic deformation (viscous flow) was observed if the delay time between successive stress cycles (3.5 GPa) was *3000 times longer than the stress cycle duration. Thus, to some extent, this lends support to our very low e f predictions.…”

Section: Creep and Recovery Strainmentioning

confidence: 99%

Viscoelastically generated prestress from ultra-high molecular weight polyethylene fibres

Fazal

Fancey

2013

J Mater Sci

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The viscoelastic characteristics of ultra-high molecular weight polyethylene (UHMWPE) fibres are investigated, in terms of creep-induced recovery strain and force output, to evaluate their potential for producing a novel form of prestressed composite. Composite production involves subjecting fibres to tensile creep, the applied load being removed before moulding the fibres into a resin matrix. After matrix curing, the viscoelastically strained fibres impart compressive stresses to the surrounding matrix, to produce a viscoelastically prestressed polymeric matrix composite (VPPMC). Previous research has demonstrated that nylon fibre-based VPPMCs can improve mechanical properties without needing to increase mass or section dimensions. The viability of UHMWPE fibre-based VPPMCs is demonstrated through flexural stiffness tests. Compared with control (unstressed) counterparts, these VPPMCs typically show increases of 20-40 % in flexural modulus. Studies on the viscoelastic characteristics indicate that these fibres can release mechanical energy over a long-timescale and fibre core-skin interactions may have an important role.

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Tensile deformation of high strength and high modulus polyethylene fibers

Cited by 55 publications

References 42 publications

Design with Ultra Strong Polyethylene Fibers

Design with Ultra Strong Polyethylene Fibers

Molecular orbital studies of polyethylene deformation

Viscoelastically generated prestress from ultra-high molecular weight polyethylene fibres

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