Gknaerospace Sweden Ab

Magnus Andersson

Anders Larsson

Peter Svensson

Fredrik Wanman

Henrik Eckervald

Fredrik WÄNMAN

A first set of data is received relating to the operation of a first mechanical part. A plurality of steady state conditions for the first set of operational data is determined. A load history is determined for the first mechanical part based on the plurality of determined steady states and the first set of operational data. One of a plurality of predefined life consumption calculation models is selected based on a type of the first mechanical part and a position of a critical area at the first mechanical part. A level of life consumption for the critical area of the first mechanical part is determined based on the selected life consumption calculation model and the determined load history.

Determining life consumption of a mechanical part

A reliability range is determined for a parameter of a component in a machine subjected to life reducing loads during operation, comprising the steps of: acquiring, for each of a plurality of load sessions, at least one parameter value for said component; generating a distribution pattern containing said parameter values for the plurality of load sessions; assigning a reliability range for the distribution pattern, wherein parameter values outside said reliability range are considered as being unrealistic; analyzing the parameter values outside the reliability range to determine which of said parameter values outside the reliability range are confirmed to be unrealistic; and adjusting the reliability range if a ratio between the confirmed unrealistic parameter values and the considered unrealistic parameter values is outside a further range being predetermined for the ratio.

Reliability limits of machines and components thereof

A life consumption of a component in a machine may be predicted. Load data may be received from a load session of the machine. A plurality of parameter sets may be accessed, each associated with a critical point of the component, which point is considered to have critical life consumption. For each critical point, life consumption may be calculated using a life consumption calculation model receiving the load data and the parameter sets as input. By selecting a plurality of critical points on the component, a more complete view is presented of how the different parts of the component are affected by the load session.

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Trollhattan, Sweden

Magnus Andersson