appareil Deval

CONT: Essais spécialisés. (...) Appareil Deval Note 1 - Laboratoire Central.
OBS: Voir la liste intitulée ""Essais spécialisés"" dans QTPA-2.

CONT: Deval Machine. - The Deval abrasion testing machine shall consist of one or more hollow cast-iron cylinders closed at one end and furnished with a tightly fitting iron cover at the other.
OBS: abrasion test: The measurement of abrasion resistance, usually by the weighing of a material sample before and after subjecting it to a known stress throughout a known time period, or by reflectance or surface finish comparisons, or by dimensional comparisons.