Reliability is an important quality aspect for consumers as well as for producers. The root of unreliability is uncertainty caused by variation in the material, in the production and in the use of products.
To be able to improve reliability it is essential to have a systematic and rational approach to estimate the importance of the different sources of variation. This is the starting point in the work to reduce their impact on products in service.
There are different methods in use and a new unified way is developed based on robust design projects (Variation Mode and Effect Analysis) as well as a number of industrial projects to improve fatigue life prediction. We are a part of the Swedish Fatigue Network, UTMIS.
Mathematical modelling is an import tool in improving reliability and reducing the effect of uncertainties. It is noted that complex models tend to increase rather than decrease the prediction uncertainties and a principal to choose an optimal complexity of the models is included in the unified approach.
Picture: Volvo Aero Corporation is responsible for the development and production of the Nozzle Extension for Vulcain 2, which is the main engine of the Arianne 5 rocket.
Robust konstruktionsmetodik för ökad tillförlitlighet
A seminar arranged by FCC, UTMIS and GMMC, April 17, 2008
Failure mode avoidance
A course arranged by UTMIS and GMMC, November 22-23, 2006