We investigate experimentally the effects of externally applied strain on injection 180$^\circ$ domain walls (DW) from a nucleation pad into magnetic nanowires, as typically used for DW-based sensors. In our study strain, generated by substrate bending, induces in material uniaxial anisotropy due to magnetoelastic coupling. To compare effects, $Co_{40}Fe_{40}B_{20}$, $Ni$ and $Ni_{82}Fe_{18}$ s...