Fig. 4From: Creep and stress relaxation behavior for natural cellulose crystal of wood cell wall under uniaxial tensile stress in the fiber directionTemporal changes in tensile relaxation response. εc(t); see legend in Fig. 1 (open circle), Es(t); ratio of stress to constant strain (ε0 ≃ 3000 × 10− 6) (tensile relaxation modulus) (filled triangle)Back to article page