ABSTRACT
One of the advantages of the method of EM modelling is that investigations can be conducted under any desired state of the material right up to the ultimate limits, i.e., approaching real conditions. Investigations on EM models enable us to approach the problem from the other side—to vary the numerical values of the factors under investigation over a specific range and thus establish functional relationships. The experience gained in systematic planning of experiments has shown that depending on the actual problem, the number of numerical values of factors, taking into account the volume of experimental work, may differ. Planning of experiments on models significantly reduces their number.
