Assessment of the probability of failure-free operation of the working system of a small-dimension hydraulic hammer—a case study

Strength estimation of the impact zone – A critical area of the tools of the hydraulic hammers

“…The thermal conditions during the single impact were assumed as constant. This assumption is generally considered valid when the time of blowing does not exceed a recommended period of 10-15 s [13].…”

“…But determining the parameters of such distribution requires extensive long-term research which is not always possible in real operating conditions. This problem was in details analyzed in a previous work of the authors [13].…”