Loosening of threaded fasteners can cause preload decline, induce bolt fatigue fracture, and
severely compromise the reliability of mechanical products. Loosening detection is an …

Pre-stressed bolted joints are widely used in civil structures and industries. The tightening
force of a bolt is crucial to the reliability of the joint connection. Loosening or over-tightening …

Bolted disk structure has the advantages of easy production and assembly and it is widely
adopted in the design of gas turbine rotors. However, the discontinuity of bolted structure …

The problem solved in this research is the diagnosis of the radial clearances in bearing
supports and the loosening of fastening bolts due to their plastic elongation (creep) or weak …

Recent work with various single-bolt experimental setups has shown promising results for
applying a vibration-based bolt tension estimation procedure. To estimate tension, the novel …

This study aims at shedding light on the mechanical behaviour of a prototype monopile–
wind turbine tower connection, constituted by a slip joint. Selected examples of data set …

Bolted beam-like engineering structures are frequently encountered with dynamic load-
caused bolt faults like fatigue crack and loosening during operation. Bolt faults can seriously …

Monitoring and control of tension in bolted joints is a difficult task that has received long-time
attention. A newly proposed technique is to hammer-impact the bolts and estimate the …

The piezoelectric active sensing method has been proven to be an effective, nondestructive
approach for bolt looseness monitoring. The conventional damage index relies on the …

Due to the loss of preload, structural failure caused by bolt loosening is common in
engineering structures. Effective monitoring of bolted connections is of great importance in …