Non‐destructive Examination of Loads in Regular and Self‐locking Spiralock® Threads through Energy‐resolved Neutron Imaging

Energy‐resolved neutron transmission imaging is utilised forin situcomparisons of strain distributions in fastened assemblies with regular and self‐locking Spiralock® female threads. The strain maps measured within torqued steel bolts indicate that for a Spiralock® thread, the load is distributed over a larger section of the fastener, making this type of thread more suitable for fastening of assemblies subject to transverse vibrations.