The strength of Glued-in Bolts after 9 Years In Situ Loading

Christian Odin Clorius, Martin Bo Uhre Pedersen, Lars Damkilde, Preben Hoffmeyer

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

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 languageEnglish
Title of host publicationProceedings of the International Wood Engineering Conference
Volume4
Place of PublicationMadison
PublisherOmnipress
Publication date1996
Pages496-503
Publication statusPublished - 1996
Externally publishedYes
EventInternational Wood Engineering Conference '96 - New Orleans, Louisiana, United States
Duration: 28 Oct 199631 Oct 1996

Conference

ConferenceInternational Wood Engineering Conference '96
Country/TerritoryUnited States
CityNew Orleans, Louisiana
Period28/10/199631/10/1996

Fingerprint

Dive into the research topics of 'The strength of Glued-in Bolts after 9 Years In Situ Loading'. Together they form a unique fingerprint.

Cite this