yield point elongation, yield elongation, yield extension, Lüders strain
plastic deformation observed after a tensile stress reduces from the upper to the lower yield point (see: tensile stress, upper yield point, lower yield point), katsekeha/teimiku konstantsel, alumisele voolepiirile vastaval koormusel pikenemine, mille alumises punktis hakkab kalestumine (vt tõmbepinge, ülemine voolepiir, alumine voolepiir)
