Design comparison: Material coupon / Installed assembly³Ô¹Ïtv / ENGINEERING EXPLANATIONDesign comparison: Material coupon / Installed assemblyMaterial couponInstalled assemblyUseful under the statedfixture conditions.Seams, openings and bondsalter the result.Compare at a consistent boundary; confirm the actual construction.Conceptual illustration, not field simulation, production artwork or test evidence.