Abstract
This chapter describes the examples for the experimental study of internal stresses under dynamic conditions. Experimental work involves the measurement of stresses in widely differing engineering structures and machine components. Although static operating conditions are most frequently encountered in structures, the operation of the components is usually dynamic in machines and mechanisms. The dynamic character of the loads in one form or another is allowed for either in the assumed magnitude of the acting force or in the magnitude of the permissible stresses. A static system cannot simulate all the circumstances deforming a component under dynamic loads. Therefore, the calculated results are usually approximate. In certain cases, for instance, impacted components, the calculations become very involved.
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