Shear creep properties for the bond layer at the wood-CFRP interface

YANG Xiao-jun; SUN You-fu

doi:10.11833/j.issn.2095-0756.2012.02.007

Volume 29 Issue 2

Mar. 2012

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YANG Xiao-jun, SUN You-fu. Shear creep properties for the bond layer at the wood-CFRP interface[J]. Journal of Zhejiang A&F University, 2012, 29(2): 192-196. doi: 10.11833/j.issn.2095-0756.2012.02.007

Citation:

YANG Xiao-jun, SUN You-fu. Shear creep properties for the bond layer at the wood-CFRP interface[J]. Journal of Zhejiang A&F University, 2012, 29(2): 192-196. doi: 10.11833/j.issn.2095-0756.2012.02.007

Shear creep properties for the bond layer at the wood-CFRP interface

doi: 10.11833/j.issn.2095-0756.2012.02.007

YANG Xiao-jun,
SUN You-fu^,

1.
College of Wood Science and Technology，Nanjing Forestry University，Nanjing 210037，Jiangsu，China

More Information

Corresponding author: SUN You-fu
Received Date: 2011-05-26
Rev Recd Date: 2011-07-24
Publish Date: 2012-04-20

Abstract

To know more about the bond layers long term properties between carbon fiber reinforced polymer（CFRP） sheets and the wood member as well as its connecting point，shear creep performance was studied using a consistent load with the Burger model. And samples were placed in dry conditions （temperature 60 ℃，relative humidity 90%） and wet conditions （temperature 24 ℃，relative humidity 45%）. Results showed that the Burger model precisely simulated the bond layers short-term shear performance （correlative coefficient R2 98%）. Compared to dry conditions，with wet conditions，the amount of creep was larger. Also，with an increase in thickness of the bond layer，creep deformation and stress relaxation increased. For high stress levels，a high creep rate，which could lead to a fracture of the bond layer，should be contained. Under the consideration of safety，a pressure （above 0.05 MPa） should be placed on the connection process between CFRP and wood to reduce the thickness of the bond layer. Also，in application，the shear stress level of the bond layer should be maintained within 50% of the maximum stress level.［Ch，3 fig. 12 ref.］
- wood science,
- bond layer,
- carbon fiber reinforced polymer （CFRP） sheet,
- shear creep,
- Burger model,
- Larix gmeinii

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Shear creep properties for the bond layer at the wood-CFRP interface

1. College of Wood Science and Technology，Nanjing Forestry University，Nanjing 210037，Jiangsu，China

Corresponding author: SUN You-fu

Received Date: 2011-05-26

Rev Recd Date: 2011-07-24

Publish Date: 2012-04-20

Key words:

wood science /
bond layer /
carbon fiber reinforced polymer （CFRP） sheet /
shear creep /
Burger model /
Larix gmeinii

Abstract: To know more about the bond layers long term properties between carbon fiber reinforced polymer（CFRP） sheets and the wood member as well as its connecting point，shear creep performance was studied using a consistent load with the Burger model. And samples were placed in dry conditions （temperature 60 ℃，relative humidity 90%） and wet conditions （temperature 24 ℃，relative humidity 45%）. Results showed that the Burger model precisely simulated the bond layers short-term shear performance （correlative coefficient R2 98%）. Compared to dry conditions，with wet conditions，the amount of creep was larger. Also，with an increase in thickness of the bond layer，creep deformation and stress relaxation increased. For high stress levels，a high creep rate，which could lead to a fracture of the bond layer，should be contained. Under the consideration of safety，a pressure （above 0.05 MPa） should be placed on the connection process between CFRP and wood to reduce the thickness of the bond layer. Also，in application，the shear stress level of the bond layer should be maintained within 50% of the maximum stress level.［Ch，3 fig. 12 ref.］

Shear creep properties for the bond layer at the wood-CFRP interface

doi: 10.11833/j.issn.2095-0756.2012.02.007

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Related

Proportional views