Patent 10287892 was granted and assigned to Siemens Aktiengesellschaft on May, 2019 by the United States Patent and Trademark Office.
A turbine blade having an internally cooled turbine blade airfoil in which a hollow space is divided by rib elements into at least one cooling duct carrying a coolant, wherein in at least one of the rib elements a separating tear initiating device for producing a separating tear is disposed, which extends at least partially in the longitudinal direction of the at least one rib element.