A Safety Factor Method for Reliability-Based Component Design

Component based method for enterprise application design

Component support has actually been enhanced with version 2.0 of the Unified Modeling Language and component appears as the best reusable unit of software, whereas more and more pre-built components are made available. However, reuse of components to build system remains a difficult task. Components are mostly identified in the late phases of the system development cycle without considering the...

Reliability-Based Design Optimization of a Composite Airframe Component

Large-Scale Reliability Based Design Optimization For Vehicle Crash Safety

The focus of this paper is on a large-scale reliability based design optimization of a car body structure for crash safety. The application of multidisciplinary design optimization (MDO) to automotive vehicle structure design has been an interest topic over the past several years (Yang et al. 1994, Schramm et al. 1999). Sobieski et al. (2000) and Kodiyalam et al. (2001) reported a method with v...

Testing the Reliability of Component-Based Safety Critical Software

Testing remains a fundamentally important way to check that a software program behaves as required, but a weakness of testing is that successful testing only leads to informal quality statements. Even where quantitative methods are employed, it is not clear how the objective statements (e.g. 100% code coverage has been achieved) relate to the statements that are really useful such as “the softw...

A new statistical method for design and analyses of component tolerance

Tolerancing conducted by design engineers to meet customers’ needs is a prerequisite for producing high-quality products. Engineers use handbooks to conduct tolerancing. While use of statistical methods for tolerancing is not something new, engineers often use known distributions, including the normal distribution. Yet, if the statistical distribution of the given variable is unknown, a new sta...