Homotopy Iteration Algorithm for Crack Parameters Identification with Composite Element Method

Table 2

Effect of the initial value on crack identification.

Scenarios	Initial value (mm)		True value (mm)		Identified results (mm)		Division of 𝜆	Measurement points (mm)	No. of iteration
	𝑥𝑐0	ℎ𝑐0	𝑥𝑐	ℎ𝑐	𝑥𝑐	ℎ𝑐
1	1500	2	1720	10	1720.000000	10.000000	5	600, 1100, 1600	31
2	1500	2	1000	10	999.999990	10.000000	5	600, 1100, 1600	38
3	1500	2	1000	1	1000.000234	1.000000	3	600, 1100, 1600	26
4	260	3	1000	1	999.999997	1.000000	21	600, 1100, 1600	146