Influence of aging (H21: wet heat for this test) on the adhesion of an automotive epoxy based structural adhesive sealant applied at body in white chain (on oily sheet metal). Support: automotive galvanized sheets, thickness: 0.7 mm. Sample: glass/epoxy-based (composite) automotive crosslinkable adhesive (same batch tested; sealant (uncured) is colored in purple), thickness: 2 mm. Operating procedure : * assembling + curing at 150 or 200 °C (crosslinking) + remaining for 24 hours in a conditioned rooom at 23 °C and 50% RH + tensile test (at 23 °C and 50% RH; v=10 mm/min); * or assembling + curing (at 150 or 200 °C) + remaining for 24 hours + aging (H21) + tensile test. "H21" means wet heat accelerated aging: 100% HR for 21 days at 70 °C (using a cataplasma). The ultimate tensile-shear strength is calculated (average: about 4 MPa) for each test sample.