Official Answer
Answer
Rendeman an karakterize pa 'ansanm pèmanan', kote prentan an pa retounen nan wotè orijinal li gratis $H_{gratis}$ apre yo fin dechaje, men materyèl la rete an yon sèl pyès. Vizyèlman, vag yo ap parèt aplati. This indicates that the applied load $P$ exceeded the elastic limit. Fatigue, however, results in a complete fracture. Anba SEM (Scanning Electron Microscopy), yon echèk fatig pral montre 'striyasyon' ki endike kwasans pwogresif krak ak yon modèl 'marke plaj', ki te swiv pa yon dènye zòn ki ka kraze rapid. If the fracture is brittle and occurs shortly after installation, it suggests Hydrogen Embrittlement or a material defect; if it occurs after millions of cycles, it is typical mechanical fatigue near the endurance limit.
