Lightweight potential of welded high-strength steel joints from S700 under constant and variable amplitude loading by high-frequency mechanical impact (HFMI) treatment

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussavertaisarvioitu

Tutkijat

Organisaatiot

  • KTH Royal Institute of Technology
  • Fraunhofer Institute for Structural Durability and System Reliability LBF

Kuvaus

Investigations with longitudinal stiffeners of the steel grade S700 under fully-reversed, constant amplitude loading and under variable amplitude loading with a straight-line spectrum show impressive fatigue strength improvement by high-frequency mechanical impact (HFMI) treatment. However, the degree of improvement was for variable amplitude loading lower when compared to constant amplitude loading due to local plasticity which occurs during larger load levels and consequently reduces the beneficial compressive residual stresses. Apart from the HFMI-treatment, the exceedance of constant amplitude loading (Woehler-lines) by variable amplitude loading (Gassner-lines) offers further lightweight potential, despite the lower degree of improvement by HFMI under spectrum loading.

Yksityiskohdat

AlkuperäiskieliEnglanti
Otsikko3rd International Conference on Material and Component Performance under Variable Amplitude Loading, VAL2015
TilaJulkaistu - 2015
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaInternational Conference on Material and Component Performance under Variable Amplitude Loading - Prague Congress Centre, Prague, Tshekki
Kesto: 23 maaliskuuta 201526 maaliskuuta 2015
Konferenssinumero: 3
http://www.val-conf.org/

Julkaisusarja

NimiProcedia Engineering
KustantajaElsevier
Vuosikerta101
ISSN (painettu)1877-7058

Conference

ConferenceInternational Conference on Material and Component Performance under Variable Amplitude Loading
LyhennettäVAL
MaaTshekki
KaupunkiPrague
Ajanjakso23/03/201526/03/2015
www-osoite

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