Product Information
- Author
- Herausgeber FKM
- EAN
- 4250697512775
- Edition
- 1995
- Delivery time
- next business day
Untersuchungen zum Einfluss der Oberflächenrauhigkeit auf die Ermüdungsfestigkeit
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Description
Untersuchungen zum Einfluss der Oberflächenrauhigkeit auf die Ermüdungsfestigkeit
FKM 1995
Booklet No. 196
Project No. 156
Abstract:
The report contains the results of experimental investigations on the influence of the surface layer condition generated by turning on the fatigue strength. The surface roughness, residual stress state, material strength, type of loading (normal and shear stresses) and loading regime (single-stage and random loading) were varied. The particular influence of the machining parameters on the number of fracture cycles was determined by means of trend tests. The following results can be derived for the turning manufacturing process used (without cooling lubricant): The geometric profile influence due to roughness is lower than in valid regulations. The influence of residual machining stresses is considerably greater. The reason for this lies in the manufacturing parameters used, which result from the development of manufacturing technology characterized by economic and quality constraints. The surface influencing factors of the regulations are partly based on machining parameters that only reflect modern manufacturing aspects to a very limited extent. Information on surface roughness according to DIN 4768 is not sufficient to characterize the surface influence on fatigue strength. The complex surface layer condition is decisive for the effectiveness of a stress machined surface. According to the current state of knowledge, no generally valid quantitative specifications can be made for component design. A corresponding influencing factor is proposed for extreme residual stress states. Scope of report:
132 p., 54 fig., 14 tab. , 37 ut Start of work:
01.07.1991 End of work:
30. 06. 1994 Funding body:
BMWi I AIF-No. 0-341 Research centers:
IMA Materialforschung u. Anwendungstechnik GmbH Dresden Managing Director:
Prof. Dr. rer. nato Chr. Wegerdt, Dr.-lng.W. Hanel Responsible:
Dipl.-lng. W. Fessenmayer Institut für Maschinelle Anlagentechnik U. Betriebsfestigkeit (lfB) Clausthal University of Technology Head:
Prof. Dr .-Ing. H. Zenner Processor:
Dipl.-lng. H. Buschermöhle u. Dr .-Ing. A. Sigwart Institute of Production Technology (IPT) Dresden University of Technology Head:
Prof. Dr .-Ing. R. Koch Processor:
Dr.-lng. U. Günther Project chairman:
Dr.-lng. C. Gerdes ABB Kraftwerke AG, CH-Baden Chairman of the Advisory Board:
Prof. Dr.-lng. H. Kipphan Heidelberger Druckmaschinen AG. Heidelberg
Booklet No. 196
Project No. 156
Abstract:
The report contains the results of experimental investigations on the influence of the surface layer condition generated by turning on the fatigue strength. The surface roughness, residual stress state, material strength, type of loading (normal and shear stresses) and loading regime (single-stage and random loading) were varied. The particular influence of the machining parameters on the number of fracture cycles was determined by means of trend tests. The following results can be derived for the turning manufacturing process used (without cooling lubricant): The geometric profile influence due to roughness is lower than in valid regulations. The influence of residual machining stresses is considerably greater. The reason for this lies in the manufacturing parameters used, which result from the development of manufacturing technology characterized by economic and quality constraints. The surface influencing factors of the regulations are partly based on machining parameters that only reflect modern manufacturing aspects to a very limited extent. Information on surface roughness according to DIN 4768 is not sufficient to characterize the surface influence on fatigue strength. The complex surface layer condition is decisive for the effectiveness of a stress machined surface. According to the current state of knowledge, no generally valid quantitative specifications can be made for component design. A corresponding influencing factor is proposed for extreme residual stress states. Scope of report:
132 p., 54 fig., 14 tab. , 37 ut Start of work:
01.07.1991 End of work:
30. 06. 1994 Funding body:
BMWi I AIF-No. 0-341 Research centers:
IMA Materialforschung u. Anwendungstechnik GmbH Dresden Managing Director:
Prof. Dr. rer. nato Chr. Wegerdt, Dr.-lng.W. Hanel Responsible:
Dipl.-lng. W. Fessenmayer Institut für Maschinelle Anlagentechnik U. Betriebsfestigkeit (lfB) Clausthal University of Technology Head:
Prof. Dr .-Ing. H. Zenner Processor:
Dipl.-lng. H. Buschermöhle u. Dr .-Ing. A. Sigwart Institute of Production Technology (IPT) Dresden University of Technology Head:
Prof. Dr .-Ing. R. Koch Processor:
Dr.-lng. U. Günther Project chairman:
Dr.-lng. C. Gerdes ABB Kraftwerke AG, CH-Baden Chairman of the Advisory Board:
Prof. Dr.-lng. H. Kipphan Heidelberger Druckmaschinen AG. Heidelberg
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