caroiaj (cadrilaj)
În franceză e Essai de quadrillage

http://www.omnitestlaborator.ro/incercari_acreditate.html
http://www.bicau.ro/static/standarde/vstandarde.htmf

This standard defines how a lattice pattern (consisting of two sets of six cuts with the sets at a right angle to each other) should be cut through the film. This reduces the paint film within the lattice to 25 small squares of coating. The standard defines the spacing of the cuts and hence the size of the squares. This varies according to the thickness of the coating.

A piece of transparent adhesive tape of defined adhesion strength is then applied over the lattice and pulled off. The standard includes a six-point pictorial scale ranging from no coating removed to more than 65% of the squares wholly or partially removed.

The advantages of the method are:-
# It is a simple, low cost method.
# It can be used on test samples where there is only a limited area of flat surface available.
# It can be used on-site and in situations where it is not practicable to use a tensile test method.
http://www.iso.org/iso/fr/catalogue_detail.htm?csnumber=3748...