'practical viability' is correct and usable in written English.
You can use it when you are talking about something being capable of being realized in practice. For example, "The practical viability of this project was assessed before we decided to move forward."
The results have shown practical viability of this approach.
The results demonstrated the practical viability of this approach.
In any event, the actual dispiriting experience of the "Resolutions" project does not make a good case for the theory's practical viability.
The results have shown the validity and practical viability of the proposed system.
Numerical simulations and real-time experiments show the practical viability of the controller.
Moreover, some computational experiments designed to investigate the practical viability of the method are presented.
According to practical operational viability, we formulate the weighted algebraic connectivity application as the flight routes addition/deletion problems.
In practical tests, viability staining of dynamically loaded cartilage slices showed extents of cell death to depend on the indenter velocity.
The interest of the latter is that the practical engineering viability of some of these systems also depends on the required pumping power.
For practical and economic viability, such forward contracts must involve a bailout option to account for bandwidth becoming unavailable at service delivery time, and must be priced appropriately to enable Internet Service Providers (ISPs) manage risks in their contracting and investments.
A prototype has been constructed, and the results verify both the concept and viability of practical measuring system for pH and β.
