Details
| Translated title of the contribution | Fatigue strength of hot-dip galvanized high-strength bolt systems in ring-flange connections of wind turbines-Assessment of the boundary layer effect for bolts with large diameters |
|---|---|
| Original language | German |
| Pages | 1010-1015 |
| Number of pages | 6 |
| Volume | 84 |
| Issue number | 12 |
| Journal | STAHLBAU |
| Publication status | E-pub ahead of print - 10 Dec 2015 |
Abstract
High-strength bolt systems with large diameters are widely used in ring-flange connections of wind turbines. For reliable protection against corrosion, the bolts are hot-dip galvanized. However, until now the effect of galvanizing on the fatigue strength of bolts with large diameters is still under investigation. Moreover, applicable S-N curves for the verification of bolts in ring-flange connections are mostly validated on smaller bolts. In the investigations, presented in this paper, the effect of hot-dip galvanizing on the fatigue strength of large-size bolts is systematically analyzed. The results show that the cyclic load bearing capacity of the bolts is significantly reduced by the zinc coating. The corresponding damage mechanism is documented by use of aborted fatigue tests on notched specimens. Based on the fatigue test results on high-strength bolts M36 valid normative regulations are discussed.
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Building and Construction
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
- Materials Science(all)
- Metals and Alloys
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In: STAHLBAU, Vol. 84, No. 12, 10.12.2015, p. 1010-1015.
Research output: Contribution to specialist publication › Contribution in non-scientific journal › Transfer
}
TY - GEN
T1 - Ermüdungsfestigkeit feuerverzinkter HV-Schrauben in Ringflanschverbindungen von Windenergieanlagen
T2 - Bewertung des Randschichteinflusses bei Schrauben mit großen Durchmessern
AU - Schaumann, Peter
AU - Eichstädt, Rasmus
AU - Oechsner, Matthias
AU - Simonsen, Fabian
PY - 2015/12/10
Y1 - 2015/12/10
N2 - High-strength bolt systems with large diameters are widely used in ring-flange connections of wind turbines. For reliable protection against corrosion, the bolts are hot-dip galvanized. However, until now the effect of galvanizing on the fatigue strength of bolts with large diameters is still under investigation. Moreover, applicable S-N curves for the verification of bolts in ring-flange connections are mostly validated on smaller bolts. In the investigations, presented in this paper, the effect of hot-dip galvanizing on the fatigue strength of large-size bolts is systematically analyzed. The results show that the cyclic load bearing capacity of the bolts is significantly reduced by the zinc coating. The corresponding damage mechanism is documented by use of aborted fatigue tests on notched specimens. Based on the fatigue test results on high-strength bolts M36 valid normative regulations are discussed.
AB - High-strength bolt systems with large diameters are widely used in ring-flange connections of wind turbines. For reliable protection against corrosion, the bolts are hot-dip galvanized. However, until now the effect of galvanizing on the fatigue strength of bolts with large diameters is still under investigation. Moreover, applicable S-N curves for the verification of bolts in ring-flange connections are mostly validated on smaller bolts. In the investigations, presented in this paper, the effect of hot-dip galvanizing on the fatigue strength of large-size bolts is systematically analyzed. The results show that the cyclic load bearing capacity of the bolts is significantly reduced by the zinc coating. The corresponding damage mechanism is documented by use of aborted fatigue tests on notched specimens. Based on the fatigue test results on high-strength bolts M36 valid normative regulations are discussed.
KW - Berechnungs- und Bemessungsverfahren - Analysis and calculation
KW - Korrosionsschutz - Corrosion protection
KW - Mast- und Turmbau - Masts and towers
KW - Versuche - Experimental set-ups
UR - http://www.scopus.com/inward/record.url?scp=84950316963&partnerID=8YFLogxK
U2 - 10.1002/stab.201510343
DO - 10.1002/stab.201510343
M3 - Beitrag in Publikumszeitung/-zeitschrift
AN - SCOPUS:84950316963
VL - 84
SP - 1010
EP - 1015
JO - STAHLBAU
JF - STAHLBAU
SN - 0038-9145
ER -