@article{MAKHILLJEAS2018131216372,
    title = {Evaluation the Effect of Shot Peening Time on Static Torsional
Strength of AA7178-T6},
    journal = {Journal of Engineering and Applied Sciences},
    volume = {13},
    number = {12},
    pages = {4476-4481},
    year = {2018},
    issn = {1816-949x},
    doi = {jeasci.2018.4476.4481},
    url = {https://makhillpublications.co/view-article.php?issn=1816-949x&doi=jeasci.2018.4476.4481},
    author = {Ali Hassan,M. Rajaa,Adnan and},
    keywords = {Torsion test,shot-peening,AA7178-T6,plastic torque,elastic torque,torque predicted},
    abstract = {In the current study, the effect of shot-peening on the static torsional strength of AA7178-T6 was
investigated. Time of shot-peening was adopted as a varied parameter to evaluate its effect on plastic state in
static torsion test of alloy. Residual stresses and surface roughness was measured to indicate the influence of
shot-peening time on alloy surface state. Torque predicted was calculated to evaluate the elastic torque and
plastic torque values according to shot-peening parameter. The results show that the shear strain decreases
whenever shot-peening time increase especially when up to 30 min that shear strain reduced by 45% and plastic
torque predicted also decreased at this time by 10% compare to its values of specimen without peened which
means that the strength of alloy improved with this process while shear stress decreased by 3.84% at this
condition. The total torque predicted was closed to experimental torque with average variation 14%.
Experimental torque decreased by 3.84% with the increasing of shot-peening time.}
    }