A comprehensive review of loosening detection methods for threaded fasteners

J Huang, J Liu, H Gong, X Deng - Mechanical Systems and Signal …, 2022 - Elsevier
Loosening of threaded fasteners can cause preload decline, induce bolt fatigue fracture, and
severely compromise the reliability of mechanical products. Loosening detection is an …

Piezoelectric impedance-based structural health monitoring of wind turbine structures: Current status and future perspectives

TC Le, THT Luu, HP Nguyen, TH Nguyen, DD Ho… - Energies, 2022 - mdpi.com
As an innovative technology, the impedance-based technique has been extensively studied
for the structural health monitoring (SHM) of various civil structures. The technique's …

Bolt-loosening monitoring framework using an image-based deep learning and graphical model

HC Pham, QB Ta, JT Kim, DD Ho, XL Tran, TC Huynh - Sensors, 2020 - mdpi.com
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 …

Feasibility of using Fe-SMA rebar as cracking resistance spiral stirrup in the anchorage zone of post-tensioned prestressed concrete

J Ji, Z Dong, Z Liu, Y Sun, H Zhu, G Wu, CK Soh - Structures, 2023 - Elsevier
To alleviate the problem of cracking in the anchorage zone of post-tensioned prestressed
concrete. The novel iron-based shape memory alloy (Fe-SMA) spiral stirrups with self …

Smart PZT-embedded sensors for impedance monitoring in prestressed concrete anchorage

QQ Pham, NL Dang, JT Kim - Sensors, 2021 - mdpi.com
This study investigates the feasibility evaluation of smart PZT-embedded sensors for
impedance-based damage monitoring in prestressed concrete (PSC) anchorages. Firstly …

Capacitively-coupled dual ring antennas for bolt loosening detection

K Jiang, L Xie, S Xue, G Wan - Measurement, 2022 - Elsevier
This paper proposes a passive and wireless UHF (Ultra High Frequency, operating in 450–
550 MHz) antenna sensor for bolt loosening detection. The novelty of this sensor is the …

Smart Aggregate‐Based Concrete Stress Monitoring via 1D CNN Deep Learning of Raw Impedance Signals

QB Ta, QQ Pham, NL Pham… - Structural Control and …, 2024 - Wiley Online Library
A 1‐dimensional convolutional neural network (1D CNN) model is developed to process
deep learning of raw impedance signals for smart aggregate (SA)‐based concrete stress …

Understanding Impedance Response Characteristics of a Piezoelectric‐Based Smart Interface Subjected to Functional Degradations

BP Nguyen, QH Tran, TT Nguyen, AMS Pradhan… - …, 2021 - Wiley Online Library
The functionality of piezoelectric devices is of significant importance in the
electromechanical impedance (EMI)‐based structural health monitoring (SHM) and damage …

Adhesive curing effect of bonded piezoelectric transducer on electromechanical impedance-based concrete structural damage detection

D Ai, H Zhu - Structural Health Monitoring, 2023 - journals.sagepub.com
Complete understanding of the adhesive curing effect of a bonded piezoelectric lead
zirconate titanate (PZT) sensor on the electromechanical admittance (EMA, inverse of …

Percussion-based loosening detection method for multi-bolt structure using convolutional neural network DenseNet-CBAM

C Du, J Liu, H Gong, J Huang… - Structural Health …, 2024 - journals.sagepub.com
Threaded fasteners are widely applied in mechanical systems, providing the functions of
connection, fastening, and sealing. However, loosening is vulnerable to occurring in harsh …