24 Experiment Research on Tensile Process …
283
Fig. 24.1 Type IV gas
cylinder
Fig. 24.2 High-density
polyethylene liner
Fig. 24.3 Test system
acoustic emission sensor, and the acoustic emission detection device including a hardware system and a software system. The mechanical properties of HDPE materials
are shown in Table 24.1 [21].
In this experiment, three different samples were monitored for acoustic emission
during the tensile process, as shown in Figs. 24.4, 24.5 and 24.6. Sample A is a sample
without pre-defects, the deformable part is the parallel segment of the sample 80 ×
25 × 2.2 mm, B is the preset round notch sample, and the deformable part is the
Table 24.1 The mechanical
properties of HDPE materials
Tensile
strength/MPa
Elongation at
break/%
Shore
hardness
Maximum use
temperature
≥18.5
≥100%
60–70
110–130
283
Fig. 24.1 Type IV gas
cylinder
Fig. 24.2 High-density
polyethylene liner
Fig. 24.3 Test system
acoustic emission sensor, and the acoustic emission detection device including a hardware system and a software system. The mechanical properties of HDPE materials
are shown in Table 24.1 [21].
In this experiment, three different samples were monitored for acoustic emission
during the tensile process, as shown in Figs. 24.4, 24.5 and 24.6. Sample A is a sample
without pre-defects, the deformable part is the parallel segment of the sample 80 ×
25 × 2.2 mm, B is the preset round notch sample, and the deformable part is the
Table 24.1 The mechanical
properties of HDPE materials
Tensile
strength/MPa
Elongation at
break/%
Shore
hardness
Maximum use
temperature
≥18.5
≥100%
60–70
110–130