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Table 6 Relative errors of proposed and conventional methods

From: Optimisation Method for Determination of Crack Tip Position Based on Gauss-Newton Iterative Technique

Parameter

Conventional method

Proposed method

Tip coordinates (pixel)

(820, 660)

(805, 648)

Mean E(η)

7.129 × 10−6

−2.474 × 10−6

Variance D(η)

1.102 × 10−5

1.538 × 10−6