Notice of RetractionAnalysis of rotating anode using finite element method

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

The x ray tube is a device which emits radiations in the x ray digital radiography system and consists of cathode and anode largely. Emitting x ray is achieved by discharges between cathode and anode. When discharges occurred at one point of the anode surface continuously, the anode can be damaged due to strong heats during the x ray exposure. Therefore, the anode stator motor must accelerate the anode to working speed rapidly to prevent wear and wobble on slowing down. Even though the anode is rotated at high speed condition, if the rotation of anode is not analyzed and compensated dynamically, the x ray tube also can be damaged by dynamic problems like the resonance which is occurred during rotation. However, researches concerned with dynamic analysis of rotating anode are rare. Accordingly, this paper intends to analyze the rotating anode using the rotor dynamics to prevent damages from high speed rotation of anode. As the method, mode shape analysis and cambell chart using finite element method are applied to dynamic analysis of rotating anode. Critical speeds and mode shapes are deducted from mode shape analysis and cambell chart and can be considered as important factors in design of rotating anode.