This part of GB/T36668 specifies the method of stress detection of key structural components of amusement facilities using resistance strain gauges and the method of stress state monitoring and fatigue damage diagnosis of large frame structures or supports of amusement facilities using fiber grating sensors. This part applies to the stress detection of key structural components of newly manufactured and in-use amusement facilities, the stress state monitoring and fatigue damage diagnosis of large frame structures or supports of amusement facilities.