Development of a programme for the quantitative comparison of a pair of curves

Assessing the level of match between two curves is a recurring operation in most scientific fields, which should be performed as objectively as possible. In this research, a computer programme was developed to quantitatively compare two curves through various metrics. A series of options were implemented to appropriately preprocess the curves before being compared, with both the input and preprocessing operations managed through intuitive graphical user interfaces GUIs. The reliability of the objective scores computed by the programme was investigated by analysing the results obtained from the comparison of two pairs of curves against the subjective judgement of a group of experts. Also, as an example of application for the validation of a numerical model, an acceleration curve from a vehicular fullscale crash test was compared with the corresponding time history obtained from a finite element FE analysis. Both the comparison with the subjective expert evaluations and the validation case indicated this programme as a promising and useful tool for the objective comparison of curves.

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