Delamination is a mode of failure where material fractures into layers. A variety of materials including laminate composites and concrete can fail by delamination. In laminated composites, the adhesion between layers often fails first causing the layers to separate. For example, in fiber-reinforced plastics, sheets of high strength reinforcement (e.g., carbon fiber, fiberglass) are bound together by a much weaker polymer matrix (e.g., epoxy). In particular, loads applied perpendicular to the high strength layers, and shear loads can cause the polymer matrix to fracture or the fiber reinforcement to debond from the polymer.

Delamination also occurs in reinforced concrete when metal reinforcements (i.e., rebar) near the surface corrode. The oxidized metal has a larger volume causing stresses when confined by the concrete. When the stresses exceed the strength of the concrete cracks can form and spread to join with neighboring cracks caused by corroded rebar creating a fracture plane that runs parallel to the surface. Once the fracture plane has developed, the concrete at the surface can separate from the substrate.

Contact Information

RVmagnetics, a.s. Registration and billing information:
RVmagnetics, a.s.
Business Register of the City Court Košice, sec.: Sa, insert no.: 1662/V
Company ID number:
48027499
TAX number:
2024180136
VAT number:
SK2024180136
IBAN:
SK2909000000005067130101
SWIFT:
GIBASKBX
R&D Lab / HQ office RVmagnetics, a.s.
Němcovej 30, 040 01 Košice
Slovak Republic
European Union
Registered Seat RVmagnetics, a.s.
Němcovej 30, 040 01 Košice
Slovak Republic
European Union