Abstract
An experimental determination of the remaining strength of glued-in bolts after 9 years is presented. The hollow tapered bolts served as the blade to rotor hub connection of a windmill with wooden blades. The test method is presented along with the load history of the bolts, the recorded residual strength, the observed fracture modes and the force displacements curves. A total of 11 bolts were pulled out between undamaged bolts. The mean strength was found to be 362 kN with a standard deviation of 37 kN. This residual strength is 95% of previously recorded data. At fracture, a displacement between 0.4 mm and 1.0 mm was observed. In the majority of failures the bolts were pulled out like a cork from a bottle. A FEM-analysis confirms the higher load bearing capacity of the special hollowed tapered bolts compared to solid bolts.
Original language | English |
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Title of host publication | Proceedings of the International Wood Engineering Conference |
Volume | 4 |
Place of Publication | Madison |
Publisher | Omnipress |
Publication date | 1996 |
Pages | 496-503 |
Publication status | Published - 1996 |
Externally published | Yes |
Event | International Wood Engineering Conference '96 - New Orleans, Louisiana, United States Duration: 28 Oct 1996 → 31 Oct 1996 |
Conference
Conference | International Wood Engineering Conference '96 |
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Country/Territory | United States |
City | New Orleans, Louisiana |
Period | 28/10/1996 → 31/10/1996 |