THERMALLY AND/OR MECHANICALLY STRESSED COMPONENT WALL OF A FLUID- AND/OR GAS-CARRYING COMPONENT, IN PARTICULAR OF A CYLINDER HEAD OF AN INTERNAL COMBUSTION ENGINE

摘要

The invention relates to a thermally and/or mechanically stressed component wall (5) of a fluid 10 carrying and/or gascarryin g component, in particular of a cylinder head (1) of an internal combustion engine, having at least one region which is at risk from cracking due to the stress, in which a crack is formed in the component wall (5) from the outer side of the wall due to opera tion, and having at least one crack stopper (6), which is arranged in the component wall (5) in the path of the crack and prevents further crack propagation, in particular through the component wall (5) into critical component regions (8) . Accordingto the invention, a crack starter (4), which forms a crack starting point localized in a defined manner, is provided on the outer side of the wall in the region (5; 10) which is at risk from cracking, thus preventing locally uncontrolled crack formation and crack propagation. (Fig. 2)