Matériaux & Techniques
Volume 75, 1987SPÉCIAL COLLAGE - CONTRÔLES ET ESSAIS
|Page(s)||29 - 35|
|Published online||19 April 2017|
Joint à double recouvrement
Estimation du coefficient de cisaillement
Double-lap bonded joint adhesive shear modulus evaluation
Maître de conférences à l’Université de Reims (IUT-GC). Chef du groupe composites et collage, ENSTA-LME Palaiseau.
2 Ingénieur de l’Armement à l’ENSTA Palaiseau
3 Professeur des Universités à l’université de Reims. Conseiller scientifique ENSTA/LME/GCC.
Double-lap bonded joint experimental study agrees with elastic analytical calculation in the central part of the overlapping, on about the two-thirds of its length. Microflaw initiation and crack growth appear through a non-linear behaviour, that is detected by electrical strain gauges, which are installed along the outer adherends, and by a superficial microstrain profile which differs from the theoretical one. Measures are interpreted by a shear modulus that varies along the tested sample. A numerical method furnishes an estimation inferior to the nominal value by reason of joint imperfections.
© SIRPE 1987
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