mehaaniline katse, mille korral koormus teimikule rakendatakse löögina, non-destructive technique used to determine the compressive strength, surface hardness and penetration resistance of reinforced concrete and masonry structures by measuring the rebound of a spring-loaded mass impacting against the surface of the sample, katse insenermaterjalide sitkuse, löögitugevuse ja sälgu tundlikkuse mõõtmiseks, test for evaluating the toughness, impact strength and notch sensitivity of engineering materials