*Tid:***19 januari 2004 kl 1515-1600 **

*Plats :***Seminarierummet 3733**, Institutionen för
matematik, KTH, Lindstedts väg 25, plan 7. Karta!

*Föredragshållare:***
Tomas Torstensson.
**

**Titel:** **
Reliability in fatigue -
On the choice of distributions in the load-strength model. (Examensarbete)
**

* Sammanfattning: *
In this thesis the influence of the choice of distributions in the loadstrength
model is considered. Accurate predictions of the failure probability
is very useful when aiming at the most cost effective design of a component.
Two distributions for load and strength are evaluated, the lognormal
distribution and the Weibull distribution. From the load-strength model
the failure probability can be determined which is the probability that the
component in question fails within a specific time. The main conclusion is
that the lognormal distribution should be used rather than the Weibull distribution,
especially when the data available is limited. A possible way of
updating the model with observed failure rates using Bayesian methods is
also suggested.

Full text of report.