Short answer: Vibration fatigue is cyclic resonance or forced motion that grows cracks at stress concentrations — common in rotating, transport and structural equipment — and is fixed by de-tuning, better joints, damping and correct preload.
At a Glance
Why It Grows
Repeated low stress at a notch or weld reaches the metal’s Metal Fatigue Endurance Limit; design around Stress Concentration Guide and control Metal Welding Distortion Guide.
Fixing the Mode
Grind weld toes (Weld Defects Guide), radius features, add damping and set Metal Bolt Fastening Guide preload; verify with Metal Ndt Guide.
QA & Supply
Tie strength to Yield Strength Vs Tensile Strength, document per Mill Test Certificate Guide, and protect via How To Prevent Metal Rust. HXSCO supplies fatigue-rated stock.
Get a Quote
Tell HXSCO your requirements and we will respond with a competitive quote and lead time.
Questions fréquemment posées
Crack growth from repeated vibration or resonance at stress concentrations.
Weld toes are notches that concentrate cyclic stress.
De-tune the frequency, grind toes, add damping and set correct preload.
Yes — resonance multiplies the stress amplitude many times over.
HXSCO supplies grades selected for the cyclic duty and environment.
Source Fatigue-Rated Metal from HXSCO
HXSCO supplies metal grades selected for vibration and cyclic duty with certificates. Send your load spectrum and quantity for a quote.