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Hybrid materials and conical bolts for high-strength bolted joints

Beyland, Lutz and Hindersmann, Arne and Bäns, Constantin and Mahrholz, Thorsten and kaps, Robert (2021) Hybrid materials and conical bolts for high-strength bolted joints. Wind Turbine Blade Manufacture, 15.-17. Nov. 2021, Köln.

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Abstract

Since rotor blades are growing in size, the loads on bolted connections at the blade root or for segmented blades are increasing. Therefore, we have developed high strength bolted connections using 2 technologies. Hybrid materials made of fibre-reinforced plastics combined with steel (fibre-metal-laminate, FML) can substitute conventional laminates at the joint bearings to enhance the strength. Radially and axially pretensioned connections (RAX) use conical bolts and bushings to clamp the laminat at the joint and thereby boost the strength. First results show, that FML and RAX can at least double the joint strength, compared to conventional T-bolts or insert joints.

Item URL in elib:https://elib.dlr.de/145845/
Document Type:Conference or Workshop Item (Speech)
Title:Hybrid materials and conical bolts for high-strength bolted joints
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Beyland, LutzLutz.Beyland (at) dlr.dehttps://orcid.org/0000-0003-4885-1704
Hindersmann, ArneArne.Hindersmann (at) dlr.dehttps://orcid.org/0000-0001-5060-8776
Bäns, ConstantinConstantin.Bäns (at) dlr.deUNSPECIFIED
Mahrholz, Thorstenthorsten.mahrholz (at) dlr.dehttps://orcid.org/0000-0003-1488-0910
kaps, RobertRobert.Kaps (at) dlr.deUNSPECIFIED
Date:17 November 2021
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Windkraft; Rotorblatt; Verbindungstechnik; Faser-Metall-Laminate; Bauteiltests; Lochleibung
Event Title:Wind Turbine Blade Manufacture
Event Location:Köln
Event Type:international Conference
Event Dates:15.-17. Nov. 2021
Organizer:AMI
HGF - Research field:Energy
HGF - Program:Materials and Technologies for the Energy Transition
HGF - Program Themes:Photovoltaics and Wind Energy
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Wind Energy
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Institute of Composite Structures and Adaptive Systems > Composite Technology
Institute of Composite Structures and Adaptive Systems > Multifunctional Materials
Institute of Composite Structures and Adaptive Systems > Composite Process Technology
Deposited By: Beyland, Lutz
Deposited On:22 Nov 2021 05:43
Last Modified:22 Nov 2021 05:43

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