Contribution of Building-Block Test to Discover Unexpected Failure Modes

摘要: While the accident rate of airplanes has decreased over decades, accidents still occur mainly due to unexpected failure modes. The objective this paper is model in probabilistic design framework how modes affect reliability, and post-design tests, called Building-Block contribute discovering them. approach can provide designers decision-makers with stochastic insight on i.e., probability failure. Designers epistemic aleatory uncertainties by assuming that they follow certain distributions. However, current does not include effect modes, which major contributor most accidents. In paper, are modeled using a large error uncertainty, hierarchical test processes detect them proposed, as well simulation procedure calculate associated As an example problem, it shown ignoring yields unconservative estimate orders magnitude. It also under ultimate load conditions compensates significantly for such effective errors. Nomenclature = Cross-sectional area structural element Designed cross-sectional