Fatigue testing of components is used to validate new product designs as well as changes made to existing designs. On new designs it is common to initially test parts at the design stage (design verification or DV) and then again at the production stage (production verification or PV) to make sure the performance has not changed. On changes to existing designs typically the life of the new part (B) is compared to that of the old part (A). When comparing the fatigue life Weibull analysis is normally used to evaluate the data. The expectation is that the B10 or B50 life of the new part or PV parts should be equal to or better than that of the old parts or the DV parts. However, fatigue testing has a great deal of inherent variability in the resulting life. In this paper the variability of numerous carburized and induction hardened components is examined. The data indicates that the value of traditional DV to PV or A to B type testing is limited due to the high level of background variation. Instead the value of fatigue testing components is in comparing the data to a well established SN curve or database made from many lots of material tested over a long period of time.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    The Limitations of Fatigue Testing


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    SAE 2010 Commercial Vehicle Engineering Congress ; 2010



    Erscheinungsdatum :

    05.10.2010




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





    Tilt Table Testing: Concepts and Limitations

    Grubb, B. P. / Kosinski, D. | British Library Conference Proceedings | 1997


    Equipment limitations in pyrotechnic shock testing

    REHARD, JOHN / CZAJKOWSKI, JOHN | AIAA | 1990


    Fatigue testing

    Engineering Index Backfile | 1935


    DP Model Testing: Purpose, Experience and Limitations

    van Dijk, R. / International Marine Contractors Association / Groupement des Entreprises Parapetrolieres et Paragazieres | British Library Conference Proceedings | 1999