Anisotropic Elastic-Viscoplastic Properties at Finite Strains of Injection-Moulded Low-Density Polyethylene

Kroon, MartinLinnéuniversitetet,Institutionen för maskinteknik (MT),Linnaeus University, SWE (author)

Open access
Injection-moulding is one of the most common manufacturing processes used for polymers. In many applications, the mechanical properties of the product is of great importance. Injection-moulding of thin-walled polymer products tends to leave the polymer structure in a state where the mechanical properties are anisotropic, due to alignment of polymer chains along the melt flow direction. The anisotropic elastic-viscoplastic properties of low-density polyethylene, that has undergone an injection-moulding process, are therefore examined in the present work. Test specimens were punched out from injection-moulded plates and tested in uniaxial tension. Three in-plane material directions were investigated. Because of the small thickness of the plates, only the in-plane properties could be determined. Tensile tests with both monotonic and cyclic loading were performed, and the local strains on the surface of the test specimens were measured using image analysis. True stress vs. true strain diagrams were constructed, and the material response was evaluated using an elastic-viscoplasticity law. The components of the anisotropic compliance matrix were determined together with the direction-specific plastic hardening parameters. © 2017 The Author(s)

TEKNIK OCH TEKNOLOGIER Maskinteknik Annan maskinteknik hsv//swe
ENGINEERING AND TECHNOLOGY Mechanical Engineering Other Mechanical Engineering hsv//eng
TEKNIK OCH TEKNOLOGIER Materialteknik Textil-, gummi- och polymermaterial hsv//swe
ENGINEERING AND TECHNOLOGY Materials Engineering Textile, Rubber and Polymeric Materials hsv//eng
Anisotropic
Constitutive behaviour
Elasticity
Injection-moulding
LDPE
Polyethylene
Tensile
Viscoplasticity
Anisotropy
Low density polyethylenes
Mechanical properties
Molding
Plasticity
Plates (structural components)
Polyethylenes
Polymers
Strain
Tensile testing
Thin walled structures
Anisotropic elastic
Compliance matrixes
Elastic-viscoplasticity
Manufacturing process
Monotonic and cyclic loading
Injection molding
Maskinteknik

Andreasson, EskilBlekinge Tekniska Högskola,Institutionen för maskinteknik,Tetra Pak, Sweden;Blekinge Institute of Technology, Sweden(Swepub:bth)esk (author)
Persson Jutemar, ElinTetra Pak AB, SWE,Tetra Pak, Sweden (author)
Petersson, ViktorTetra Pak AB, SWE,Tetra Pak, Sweden (author)
Persson, LeoTetra Pak AB, SWE,Tetra Pak, Sweden (author)
Dorn, Michael,1978-Linnéuniversitetet,Institutionen för byggteknik (BY),Linnaeus University, SWE(Swepub:lnu)midoaa (author)
Olsson, Pär A T,1981-Malmö universitet,Institutionen för materialvetenskap och tillämpad matematik (MTM),Malmö University, Sweden,Malmö högskola, SWE(Swepub:mau)tspaol (author)
LinnéuniversitetetInstitutionen för maskinteknik (MT) (creator_code:org_t)

In:Experimental mechanics: Springer New York LLC58:1, s. 75-860014-48511741-2765

By the author/editor: Kroon, Martin; Andreasson, Eski ...; Persson Jutemar, ...; Petersson, Vikto ...; Persson, Leo; Dorn, Michael, 1 ...; show more...; Olsson, Pär A T, ...; show less...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Mechanical Engin ...; and Other Mechanical ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Materials Engine ...; and Textile Rubber a ...

By the university: Blekinge Institute of Technology; Malmö University; Linnaeus University

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