Lüders bands, Lüders lines, Luders lines, Luders bands, Hartmann lines, Piobert lines, Lüder`s lines
kohaliku ebaühtlase plastse deformatsiooni tõttu metalltooriku (lehtmetall) või proovikeha pinnal moodustuvad jooned, elongated surface markings or depressions in sheet metal, often visible with the unaided eye, caused by discontinuous (inhomogeneous) yielding