Experimental Determination and Numerical Modelling of Process Induced Strains and Residual Stresses in Thick Glass/Epoxy Laminate

Michael Wenani Nielsen; Jesper Henri Hattel; Tom Løgstrup Andersen; Kim Branner; Per Hørlyk Nielsen

Experimental Determination and Numerical Modelling of Process Induced Strains and Residual Stresses in Thick Glass/Epoxy Laminate

Michael Wenani Nielsen
, Jesper Henri Hattel
, Tom Løgstrup Andersen
, Kim Branner
, Per Hørlyk Nielsen

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

In this work, a cure hardening instantaneous linear elastic (CHILE) model and a path dependent (PD) constitutive approach are compared, for the case of modelling strain build-up during curing of a thick composite laminate part. The PD approach is a limiting case of viscoelasticity with path dependency on temperature and cure degree. Model predictions are compared to experimentally determined in-situ strains, determined using FBG sensors. It was found that both models offer good approximations of internal strain build-up. A general shortcoming is the lack of capturing rate-dependent effects such as creep.

Original language	English
Title of host publication	ECCM15 - 15th European Conference On Composite Materials
Number of pages	8
Publication date	2012
Publication status	Published - 2012
Event	ECCM15: 15th European Confeernce on Composite Materials - Venica, Italy Duration: 24 Jun 2012 → 28 Jun 2012 http://www.eccm15.org/

Conference

Conference	ECCM15
Country/Territory	Italy
City	Venica
Period	24/06/2012 → 28/06/2012
Internet address	http://www.eccm15.org/

Keywords

Numerical modeling
Shape distortions
FBG sensoring
Curing

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@inproceedings{656d11f0f2b74b45a0257d34b8234db3,

title = "Experimental Determination and Numerical Modelling of Process Induced Strains and Residual Stresses in Thick Glass/Epoxy Laminate",

abstract = "In this work, a cure hardening instantaneous linear elastic (CHILE) model and a path dependent (PD) constitutive approach are compared, for the case of modelling strain build-up during curing of a thick composite laminate part. The PD approach is a limiting case of viscoelasticity with path dependency on temperature and cure degree. Model predictions are compared to experimentally determined in-situ strains, determined using FBG sensors. It was found that both models offer good approximations of internal strain build-up. A general shortcoming is the lack of capturing rate-dependent effects such as creep.",

keywords = "Numerical modeling, Shape distortions, FBG sensoring, Curing",

author = "Nielsen, \{Michael Wenani\} and Hattel, \{Jesper Henri\} and \{L{\o}gstrup Andersen\}, Tom and Kim Branner and Nielsen, \{Per H{\o}rlyk\}",

year = "2012",

language = "English",

booktitle = "ECCM15 - 15th European Conference On Composite Materials",

note = "ECCM15 : 15th European Confeernce on Composite Materials ; Conference date: 24-06-2012 Through 28-06-2012",

url = "http://www.eccm15.org/",

}

Experimental Determination and Numerical Modelling of Process Induced Strains and Residual Stresses in Thick Glass/Epoxy Laminate. / Nielsen, Michael Wenani; Hattel, Jesper Henri ; Løgstrup Andersen, Tom et al.
ECCM15 - 15th European Conference On Composite Materials. 2012.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - Experimental Determination and Numerical Modelling of Process Induced Strains and Residual Stresses in Thick Glass/Epoxy Laminate

AU - Nielsen, Michael Wenani

AU - Hattel, Jesper Henri

AU - Løgstrup Andersen, Tom

AU - Branner, Kim

AU - Nielsen, Per Hørlyk

PY - 2012

Y1 - 2012

N2 - In this work, a cure hardening instantaneous linear elastic (CHILE) model and a path dependent (PD) constitutive approach are compared, for the case of modelling strain build-up during curing of a thick composite laminate part. The PD approach is a limiting case of viscoelasticity with path dependency on temperature and cure degree. Model predictions are compared to experimentally determined in-situ strains, determined using FBG sensors. It was found that both models offer good approximations of internal strain build-up. A general shortcoming is the lack of capturing rate-dependent effects such as creep.

AB - In this work, a cure hardening instantaneous linear elastic (CHILE) model and a path dependent (PD) constitutive approach are compared, for the case of modelling strain build-up during curing of a thick composite laminate part. The PD approach is a limiting case of viscoelasticity with path dependency on temperature and cure degree. Model predictions are compared to experimentally determined in-situ strains, determined using FBG sensors. It was found that both models offer good approximations of internal strain build-up. A general shortcoming is the lack of capturing rate-dependent effects such as creep.

KW - Numerical modeling

KW - Shape distortions

KW - FBG sensoring

KW - Curing

M3 - Article in proceedings

BT - ECCM15 - 15th European Conference On Composite Materials

T2 - ECCM15

Y2 - 24 June 2012 through 28 June 2012

ER -

Experimental Determination and Numerical Modelling of Process Induced Strains and Residual Stresses in Thick Glass/Epoxy Laminate

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Keywords

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