School Trophy Case Roller-Wave Distortion Inspection for Safety Glass
Intent: research — a school trophy case roller wave distortion inspection is a structured visual assessment that identifies roller-wave surface undulations in heat-treated glazing panels installed in school display cases, distinguishes those periodic distortions from surface contamination, film haze, or mounting deformation, and determines whether each finding represents a cosmetic optical defect or a condition that warrants safety escalation. Roller wave distortion is introduced during the tempering process when softened glass travels through a roller-hearth furnace and sags slightly between roller contact points, producing a repeating sinusoidal pattern perpendicular to the direction of glass travel. The wave is embedded in the glass body — not on its surface — which means cleaning cannot remove it and standard glass bow measurement cannot characterize it. This guide defines roller wave precisely, describes the angled-light inspection method that allows field identification without laboratory equipment, provides a side-by-side comparison of roller wave against the four most commonly confused glass conditions, presents an escalation table separating cosmetic-only findings from safety triggers, and supplies a quick-reference checklist facilities teams and athletic directors can use during routine trophy case maintenance rounds.
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