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Biaxial yield surface investigation of polymer-matrix composites.

Ye J, Qiu Y, Zhai Z, He Z - Sensors (Basel) (2013)

Bottom Line: This article presents a numerical technique for computing the biaxial yield surface of polymer-matrix composites with a given microstructure.On this basis, the manufacturing process thermal residual stress and strain rate effect on the biaxial yield surface of composites are considered.The results show that the effect of thermal residual stress on the biaxial yield response is closely dependent on loading conditions.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory of Ministry of Education for Electronic Equipment Structure Design, Xidian University, Xi'an 710071, China. ronkey6000@sina.com

ABSTRACT
This article presents a numerical technique for computing the biaxial yield surface of polymer-matrix composites with a given microstructure. Generalized Method of Cells in combination with an Improved Bodner-Partom Viscoplastic model is used to compute the inelastic deformation. The validation of presented model is proved by a fiber Bragg gratings (FBGs) strain test system through uniaxial testing under two different strain rate conditions. On this basis, the manufacturing process thermal residual stress and strain rate effect on the biaxial yield surface of composites are considered. The results show that the effect of thermal residual stress on the biaxial yield response is closely dependent on loading conditions. Moreover, biaxial yield strength tends to increase with the increasing strain rate.

No MeSH data available.


Related in: MedlinePlus

Wavelength absolute error of the FBGs sensor under loading and unloading conditions.
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f6-sensors-13-04051: Wavelength absolute error of the FBGs sensor under loading and unloading conditions.

Mentions: Measurement data are linear fitted by the least-squares method. Figure 5(a,b) shows the experimental results under loading and unloading conditions, respectively. It can be seen that measured results of the FBGs sensor show high reproducibility under loading and unloading conditions. Figure 6 shows the wavelength absolute error of the FBGs sensor between the theoretical wavelength and average wavelength of the test results. It can be seen from the figure that absolute error is less than 3 pm.


Biaxial yield surface investigation of polymer-matrix composites.

Ye J, Qiu Y, Zhai Z, He Z - Sensors (Basel) (2013)

Wavelength absolute error of the FBGs sensor under loading and unloading conditions.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3673070&req=5

f6-sensors-13-04051: Wavelength absolute error of the FBGs sensor under loading and unloading conditions.
Mentions: Measurement data are linear fitted by the least-squares method. Figure 5(a,b) shows the experimental results under loading and unloading conditions, respectively. It can be seen that measured results of the FBGs sensor show high reproducibility under loading and unloading conditions. Figure 6 shows the wavelength absolute error of the FBGs sensor between the theoretical wavelength and average wavelength of the test results. It can be seen from the figure that absolute error is less than 3 pm.

Bottom Line: This article presents a numerical technique for computing the biaxial yield surface of polymer-matrix composites with a given microstructure.On this basis, the manufacturing process thermal residual stress and strain rate effect on the biaxial yield surface of composites are considered.The results show that the effect of thermal residual stress on the biaxial yield response is closely dependent on loading conditions.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory of Ministry of Education for Electronic Equipment Structure Design, Xidian University, Xi'an 710071, China. ronkey6000@sina.com

ABSTRACT
This article presents a numerical technique for computing the biaxial yield surface of polymer-matrix composites with a given microstructure. Generalized Method of Cells in combination with an Improved Bodner-Partom Viscoplastic model is used to compute the inelastic deformation. The validation of presented model is proved by a fiber Bragg gratings (FBGs) strain test system through uniaxial testing under two different strain rate conditions. On this basis, the manufacturing process thermal residual stress and strain rate effect on the biaxial yield surface of composites are considered. The results show that the effect of thermal residual stress on the biaxial yield response is closely dependent on loading conditions. Moreover, biaxial yield strength tends to increase with the increasing strain rate.

No MeSH data available.


Related in: MedlinePlus