The following two equations contain corrections, respectively, for Eqs. (16) and (17):
σr,jαE(1v)(12Tave12j=0jTjVjj=0jVj)=0
(16)
σc,jαE(1v)(12Tave+12j=0jTjVjj=0jVjTj)=0
(17)
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