Table 2.

Summary of the experimental work plan for PC specimens.

Test Geometry	Specimen	Necking Determination Approaches
		Time-Dependent			Flat-Valley
		Stage	${\mathit{\epsilon }}_{1\mathit{l}\mathit{i}\mathit{m}}$	${\mathit{\epsilon }}_{2\mathit{l}\mathit{i}\mathit{m}}$	Stage	${\mathit{\epsilon }}_{1\mathit{l}\mathit{i}\mathit{m}}$	${\mathit{\epsilon }}_{2\mathit{l}\mathit{i}\mathit{m}}$
TS	I	251	0.100	−0.019	252	0.106	−0.020
	II	218	0.093	−0.019	220	0.104	−0.024
	III	208	0.093	−0.022	210	0.105	−0.026
PS	I	247	0.099	0.003	249	0.109	0.002
	II	274	0.090	0.003	271	0.081	0.002
	III	243	0.010	0.001	244	0.105	0.000
BS	I	260	0.095	0.057	250–270	–	–
	II	217	0.084	0.055	207–227	–	–
	III	218	0.081	0.047	208–228	–	–