TY - GEN
T1 - Coupled simulation of hygrothermal aging effects on residual strength of open hole composite laminates
AU - Hoos, Kevin H.
AU - Scott Mcquien, J.
AU - Pochiraju, Kishore
AU - Iarve, Endel V.
AU - Rousseau, Carl
AU - Engelstad, Stephen
AU - Mollenhauer, David H.
N1 - Publisher Copyright:
© 2020, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2020
Y1 - 2020
N2 - Rx-FEM methodology was extended to progressive damage analysis in laminated composites in a range of moisture exposure and elevated temperature conditions. The mechanical property dependence was experimentally determined in independent testing and used as input characteristics as a function of moisture distribution and temperature. Moisture diffusion modeling in the presence of evolving matrix cracking and delaminations was performed to capture the moisture intake through additional pathways created by damage. A tensile fatigue loading of a [60/0/-60]s CFRP laminate under amplitude of 0.9 static strength at R=0.1 was considered with 1 hour hold every 3600 cycles in saturated moisture conditions. The damage patterns and moisture content profiles showed strong correlation. Overall, however, the comparison of coupled simulations with constant dry and saturated property simulation showed only a very small effect of moisture at room temperature loading and a discernible effect on residual strength within the range of analysis performed.
AB - Rx-FEM methodology was extended to progressive damage analysis in laminated composites in a range of moisture exposure and elevated temperature conditions. The mechanical property dependence was experimentally determined in independent testing and used as input characteristics as a function of moisture distribution and temperature. Moisture diffusion modeling in the presence of evolving matrix cracking and delaminations was performed to capture the moisture intake through additional pathways created by damage. A tensile fatigue loading of a [60/0/-60]s CFRP laminate under amplitude of 0.9 static strength at R=0.1 was considered with 1 hour hold every 3600 cycles in saturated moisture conditions. The damage patterns and moisture content profiles showed strong correlation. Overall, however, the comparison of coupled simulations with constant dry and saturated property simulation showed only a very small effect of moisture at room temperature loading and a discernible effect on residual strength within the range of analysis performed.
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U2 - 10.2514/6.2020-1210
DO - 10.2514/6.2020-1210
M3 - Conference contribution
AN - SCOPUS:85091894561
SN - 9781624105951
T3 - AIAA Scitech 2020 Forum
BT - AIAA Scitech 2020 Forum
T2 - AIAA Scitech Forum, 2020
Y2 - 6 January 2020 through 10 January 2020
ER -