Can enthalpy be measured?
It cannot be measured.
Enthalpy is not a physical property. Enthalpy depends on temperature and it's an energy content measurement. Pipes burst because of high temperatures and pressures, not enthalpies. Enthalpy can't do a physical change because for there to be an enthalpy change, there should be a change in a thermal physical property named temperature. The day you hear someone saying that I have been hit with a stone and the stone had high enthalpy, then maybe we can measure enthalpy physically.