Correction to: International Journal of Mechanical and Materials Engineering (2020) 15:10

https://doi.org/10.1186/s40712-020-00122-2

In the original publication of this article (Kaur et al. 2020), the equation 13 is incorrect, the correct equation 13 is as below. The original publication has been corrected.

$$ K\left(t-\xi \right)=1-\frac{2b}{\chi}\left(t-\xi \right)+\frac{a^2}{\chi^2}{\left(t-\xi \right)}^2=\left\{\begin{array}{c}1\\ {}1+\left(\xi -t\right)/\chi \\ {}\xi -t+1\\ {}{\left[1+\left(\xi -t\right)/\chi \right]}^2\end{array}\right.{\displaystyle \begin{array}{c}a=0,b=0\\ {}a=0,b=1/2\\ {}a=0,b=\chi /2\\ {}a=1,b=1\end{array}} $$
(13)