%0 Journal Article %T Estimation of Long-Term Stiffness of Storage Aged GFRP Composite Samples Immersed in HCl Acid by TTSP Method %A Salar Bagherpour %A Rouholah Bagheri %A Ahmad Saatchi %J ISRN Mechanical Engineering %D 2011 %I Hindawi Publishing Corporation %R 10.5402/2011/251219 %U http://dx.doi.org/10.5402/2011/251219