Generally indentation tests are performed on hard rocks, not on soils.. This type of tests are used to estimate the energy necessary to penetrate hard rocks.

Thanks Salma

A wide number of parameters (from different models) can be determined from indentation tests. Not only using correlations.

https://www.researchgate.net/publication/305747696_Simple_Methodology_to_Obtain_Critical_State_Parameters_of_Remolded_Clays_Under_Normally_Consolidated_Conditions_Using_the_Fall-Cone_Test

Hope you find this handy.

Marcelo

Article Simple Methodology to Obtain Critical State Parameters of Re...