关键词: 单向板变异法, 小样本, B基准值, 复合材料, 低成本

Abstract: This paper proposes a small-sample statistical method for B-basis values based on the lamina variatbility method (LVM). Considering the need to compensate for excessively low coefficients of variation obtained from qualification tests, the LVM is modified to broaden its application scenarios. Corresponding statistical analysis software is developed based on the above theory. The maximum deviation of B-basis values calculated by the software from the results of DOT/FAA/AR-06/53 is 0.024%.Statistical analysis is conducted on 1860 domestic test data using the proposed method. The results show that LVM can yield relatively conservative B-basis values close to those calculated by the single-point method. Most test data fall within the ±10% deviation band, with an average relative deviation of 3.64%, which basically meets the requirements of engineering applications.

Key words: lamina variability method, small sample, B-basis value, composite material, low cost