To swing a playground swing, push it in rhythm. That's how you use resonance — amplifying oscillations when the beat matches. A similar mechanism twists hydroturbine shafts when they receive electrical jolts from AI data centers. Modern AI servers consume energy unevenly: millions of processors suddenly kick into action, then go quiet. These power surges, like invisible hands, nudge the spinning shaft. When they match the shaft's natural twisting rhythm, the nudges rock it harder and harder. The metal gradually fatigues — like a paperclip bent back and forth. Eventually, the shaft can crack even without visible overload.

Turbines with adjustable blades (Kaplan type) are especially vulnerable — their lighter construction responds more eagerly to rapid disturbances. Scientists modeled the process and proposed a simple coefficient: it shows how dangerous a data center's proximity is for a turbine. This way, engineers can assess risks in advance and extend the equipment's lifespan.