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    Constitutive Modeling of Shape Memory Effects in Semicrystalline Polymers With Stretch Induced Crystallization

    Source: Journal of Engineering Materials and Technology:;2010:;volume( 132 ):;issue: 004::page 41010
    Author:
    Kristofer K. Westbrook
    ,
    Vikas Parakh
    ,
    Taekwoong Chung
    ,
    Patrick T. Mather
    ,
    Logan C. Wan
    ,
    Martin L. Dunn
    ,
    H. Jerry Qi
    DOI: 10.1115/1.4001964
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Polymers can demonstrate shape memory (SM) effects by being temporarily fixed in a nonequilibrium shape and then recover their permanent shape when exposed to heat, light, or other external stimuli. Many previously developed shape memory polymers (SMPs) use the dramatic molecular chain mobility change around the glass transition temperature Tg to realize the SM effect. In these materials, the temporary shape cannot be repeated unless it is reprogramed, and therefore the SM effect is one way. Recently, a semicrystalline SMP, which can demonstrate both one- and two-way SM effects, was developed by one of our groups (, , and , 2008, “Two-Way Reversible Shape Memory in a Semicrystalline Network,” Macromolecules, 41(1), pp. 184–192). The main mechanism of the observed SM effects is due to stretch induced crystallization. This paper develops a one-dimensional constitutive model to describe the SM effect due to stretch induced crystallization. The model accurately describes the complex thermomechanical SM effect and can be used for the future development of three-dimensional constitutive models.
    keyword(s): Temperature , Stress , Polymers , Shape memory effects , Crystallization , Deformation AND Cooling ,
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      Constitutive Modeling of Shape Memory Effects in Semicrystalline Polymers With Stretch Induced Crystallization

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    http://yetl.yabesh.ir/yetl1/handle/yetl/143325
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    contributor authorKristofer K. Westbrook
    contributor authorVikas Parakh
    contributor authorTaekwoong Chung
    contributor authorPatrick T. Mather
    contributor authorLogan C. Wan
    contributor authorMartin L. Dunn
    contributor authorH. Jerry Qi
    date accessioned2017-05-09T00:37:56Z
    date available2017-05-09T00:37:56Z
    date copyrightOctober, 2010
    date issued2010
    identifier issn0094-4289
    identifier otherJEMTA8-27133#041010_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/143325
    description abstractPolymers can demonstrate shape memory (SM) effects by being temporarily fixed in a nonequilibrium shape and then recover their permanent shape when exposed to heat, light, or other external stimuli. Many previously developed shape memory polymers (SMPs) use the dramatic molecular chain mobility change around the glass transition temperature Tg to realize the SM effect. In these materials, the temporary shape cannot be repeated unless it is reprogramed, and therefore the SM effect is one way. Recently, a semicrystalline SMP, which can demonstrate both one- and two-way SM effects, was developed by one of our groups (, , and , 2008, “Two-Way Reversible Shape Memory in a Semicrystalline Network,” Macromolecules, 41(1), pp. 184–192). The main mechanism of the observed SM effects is due to stretch induced crystallization. This paper develops a one-dimensional constitutive model to describe the SM effect due to stretch induced crystallization. The model accurately describes the complex thermomechanical SM effect and can be used for the future development of three-dimensional constitutive models.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleConstitutive Modeling of Shape Memory Effects in Semicrystalline Polymers With Stretch Induced Crystallization
    typeJournal Paper
    journal volume132
    journal issue4
    journal titleJournal of Engineering Materials and Technology
    identifier doi10.1115/1.4001964
    journal fristpage41010
    identifier eissn1528-8889
    keywordsTemperature
    keywordsStress
    keywordsPolymers
    keywordsShape memory effects
    keywordsCrystallization
    keywordsDeformation AND Cooling
    treeJournal of Engineering Materials and Technology:;2010:;volume( 132 ):;issue: 004
    contenttypeFulltext
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