Structural Safety Evaluation Using Inverse Measure Approach

High reliability and operational safety are most important requirements of aerospace products. Structural Safety (Reliability) assessment techniques help to achieve safe designs and also identify effect of uncertainty occur in structural systems of aerospace products. In general the structural safety is evaluated using various statistical methods like Mean Value and Moment Methods. Currently several inverse reliability measures such as Probabilistic Performance Measure (PPM) and Probabilistic Sufficiency Factor (PSF) have been introduced as measures of safety. In the present paper, thin Maraging steel cylindrical pressure vessels which are extensively used in space vehicle applications are considered for safety evaluation using Probabilistic Performance Measure (PPM) and is demonstrated with a practical case.