The growing demand towards life cycle sustainability has created a tremendous interest in
non-destructive evaluation (NDE) to minimize manufacturing defects and waste, and to …

This paper reviews the research of monitoring technologies for bolted structural connections.
The acoustoelastic effect based method, the piezoelectric active sensing method, and the …

Looseness detection of bolted connections is an essential industrial issue that can reduce
the maintenance and repair costs caused by joint failures; however, current loosening …

Bolted joint are among the key components that enable the robust assembly of a wide
variety of structures. However, due to wear and tear over time, bolted joint may loosen, and if …

Many damage detection methods that use data obtained from contact sensors physically
attached to structures have been developed. However, damage-sensitive features such as …

Bolted structures are widely utilized in industrial structures and equipment due to the
numerous advantages they possess. However, the use of bolts in these structures by itself …

In this study, we investigate a novel idea of using synthetic images of bolts which are
generated from a graphical model to train a deep learning model for loosened bolt detection …

In this study, a preload monitoring method using impedance signatures obtained from a
piezoelectric-based smart interface is presented for bolted girder connections. Firstly, the …

Piezoceramic based active sensing methods have been researched to monitor preload on
bolt connections. However, there is a saturation problem involved with this type of method …

In this paper, a method to quantitatively evaluate the status of bolted connection by using a
single piezoceramic transducer and coda wave is proposed. The so-called coda wave was …