Research Article

Experimental Observation on the Pure Torsional Ratchetting of Polycarbonate Polymer at Room Temperature

Figure 12

Curves of ratchetting strain versus number of cycles obtained in cyclic tests with various peak hold times and different stress levels, and at 1 MPa/s: (a) 35 ± 30 MPa; (b) 25 ± 30 MPa.
(a)
(b)