Browse Prior Art Database

Temperature Dependency of Life Time Consumption

IP.com Disclosure Number: IPCOM000212110D
Original Publication Date: 2011-Oct-31
Included in the Prior Art Database: 2011-Oct-31
Document File: 1 page(s) / 81K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

At present there are several ways to monitor and control structural components of power generating machines like wind turbines. Especially the determination of fatigue life time consumption and used life time are good estimators for the condition of a component.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

Page 01 of 1

Temperature Dependency of Life Time Consumption

Idea: Hans Laurberg, Ph.D., DK-Brande

At present there are several ways to monitor and control structural components of power generating machines like wind turbines. Especially the determination of fatigue life time consumption and used life time are good estimators for the condition of a component.

Existing methods for example are used to detect the load cycle cumulation of a structural component in power generating machines. The fatigue load of a structural component is permanently calculated and cumulated in order to yield a value that indicates the so far cumulated life time consumption of this component.

In the following, a novel solution for a more accurate determination of life time consumption of structural components in power generating machines is proposed. This more accurate determination can be achieved by taking into account the temperature dependency of such components. By multiplying the detected load cycle cumulation of a certain component by a term expressing its temperature dependency as shown in Figure 1, it is possible to obtain a corrected value of the load cycle cumulation.

Implementing the temperature dependency of a component in the determination of its life time consumption as it is described above can enhance the accuracy of said determination.

Figure 1: Implementation of temperature dependency in determination of load cycle cumulation

© SIEMENS AG 2011 file: 2011J22141.rtf

page: 1