Abstracts Archive

Dynamic responses of steel bolts anchored in concrete subject to cyclic loads are complex: qualitative physical attributes include pinching, displacement ratcheting and force-intercept. In fact, these attributes vary with time, involving uncertainties that can lead to different failure patterns. Thi...

The use of fibre reinforced polymer (FRP) in civil construction applications has gained considerable popularity worldwide as suitable method for strengthening of existing concrete structures. However, the implementation of methods able to give a reliable prediction about the health of this type of ...

The main purpose of the Structural Health Monitoring (SHM) techniques applied in bridges is to monitor many structural parameters to prevent serious damage that may eventually lead to collapse of the entire structure. To date, Operational Modal Analysis (OMA) methods are widely seen as the most reli...

In the field of civil infrastructures, Structural Health Monitoring generally suffers from a scarcity of labelled data describing the damage classes and rare environmental conditions. To solve this issue, the proposed work adopts a Transfer Learning approach for leveraging information from a source ...

During their lifetime, civil structures and infrastructures are subjected to environmental and human-induced hazards that may lead to structural damages or, in some cases, to full collapse. Such failures are associated with increased risk for life and limb while environmental as well as monetary los...

An autonomous Structural Health Monitoring (SHM) strategy is presented for the online identification and classification of different types of Acoustic Emission (AE) sources in composite structures. Towards this, a Convolutional Neural Network based deep learning network is prepared for the automatic...

This article presents the studies regarding the assessment of the damping performance of Stockbridge dampers on an overhead high-voltage transmission line conductor and their impact on the corresponding fatigue lifetime estimation. To increase the understanding of the dynamic behaviour of Stockbridg...

3D printing (additive manufacturing, AM) is a promising approach for the production of light and strong structures with many successful applications, e.g., in dentistry and orthopaedics. Numerous types of filaments differing in mechanical properties can be used to produce 3D printed structures, amon...

This work focuses on the structural health monitoring of jacket-type foundations used by offshore wind turbines. A vibration-only response mechanism based on accelerometer data is specifically suggested. Classification models (supervised models) are one possible method for achieving the aim; however...

Mass timber is a wood product category that includes various alternatives. One of them is a veneer-based product known as Mass Ply Panels (MPP), which was recently introduced and certified per ANSI-PRG 320. A full-scale three-story mass timber building structure, which is 12.2 m by 12.2 m in plan an...

The current need for sustained renewable energy is pushing the boundaries of the size and availability of wind turbines. As a result, there is an urge to develop a well-functioning Structural Health Monitoring (SHM) systems to keep these systems online. This need is also shared with other pieces of ...

This study is driven by the ever-growing enthusiasm from industry and academia towards the development of a robust, lean, and autonomous structural health monitoring system. Owing to their lightweight, reduced carbon footprint and new design possibilities composite materials are ubiquitous in variou...

In operational modal analysis, the observability and quality of the extracted modal parameters, apart from the characteristics of structures, loads, and noise, largely depend on the data acquisition system. Especially in large-scale structures, because of the low frequency- and low amplitude of vibr...

The study aims at exploring the capabilities and performance limits of advanced robust approaches, such as those based on the novel Multiple Model (MM) and the Hyper-Sphere (HS) principles, for random vibration response-based damage detection and characterization for a population of composite aerost...

This paper presents the application of reverse engineering in assessing the magnitude of dynamic loading on an industry steel structure. The studied steel structure is subjected to a frequently occurring plug load in the pipeline of the conveying system. This dynamic load leads to significant vibrat...

Population-based Structural Health Monitoring (PBSHM) aims to gain additional insights on the health of a structure when using data available across a population of similar structures, as compared to the insight available when using only data from a single structure. Before knowledge can be transfer...

This paper presents design and installation of a continuous monitoring system for an offshore wind turbine (OWT) in Rhode Island, USA. The monitoring system has been collecting continuous data from accelerometers, strain gauges, and inclinometers since April 2021 at 50 Hz sampling rate. An automated...

In many structural health monitoring applications, different types of sensors monitor the same structure. Measured vibration response can include accelerations, velocities, displacements, and strains. It is important that all available information is utilized in damage detection for an early warning...

Researchers are increasingly interested in the project dedicated to developing and validating low-cost accelerometer prototypes based on Arduino technology. This growing interest stems from the fact that the use of low-cost solutions may make Structural Health Monitoring (SHM) practical and affordab...

The number of applications of structural health monitoring techniques to buildings is steadily increasing, fostered by the diffusion of low cost accelerometric sensors based on MEMS. In many cases these sensors may represent an alternative to more expensive transducers, such as piezoelectric acceler...

In this paper, a flexible strain sensing system for full-scale RC frame structures is presented. The system includes two flexible strain gauges in different configurations, a single full-bridge and a double half-bridge. It also includes a selector that can be switched between measuring axial and ben...

Nonlinear guided waves show great promise for structural health monitoring (SHM) due to their high sensitivity to the early detection of material micro-structural defects. However, an SHM system contain inevitable non-damage-related nonlinear sources that may overwhelm the damage-induced nonlinear w...

The present contribution outlines a general methodological procedure for a consistent signal processing analysis of vibration response data, combining both classic and advanced techniques, toward structural monitoring and identification scopes. A specific case study is considered, for testing and va...

Bolted connections are crucial components in mechanical systems with the purpose of assembling different components. However, the tension of bolts may decrease due to recursive loading and environmental conditions. Therefore, monitoring the tension of bolted connection can help prevent failures and ...

The challenge that is at the forefront of data-driven vibration-based structural health monitoring (VSHM) is the detrimental effect caused by environmental and operational variations (EOVs). Therefore, action must be taken in order to mitigate the effects of the EOVs without affecting the influence ...

The field of structural health monitoring (SHM) is based on collecting data, and according to that, useful information about the monitored structure is obtained. Therefore, it is essential that the signals from the sensors used in the monitoring campaign can be trusted. However, some of these sensor...

Concrete is one of the most widely used construction materials in the world. As it is brittle and has a random, heterogeneous, multi-phase structure, it is very susceptible to cracking. Therefore, the detection of cracks at the earliest possible stage is of great importance. In recent years, various...

Understanding the dynamics of the interaction between railway vehicles and tracks is essential for forecasting condition and performing maintenance action to preserve the safety of railway infrastructure. In this work, physics-based models are deployed to predict the dynamic response of railway vehi...

This paper presents a fast and reliable model, for analysing the effect of localised damage on waveguides and obtaining all the range of dispersion curves for wave propagation. The model is based on modelling a finite section of the waveguide using the Finite Element Method (FEM) and applying the Fl...

This paper evaluates several data models for high-volume time-series bridge sensor data. Remote sensor technologies are becoming increasingly more reliable and affordable for ensuring safety and guaranteeing appropriate timing for bridge maintenance. Data returned from these sensors tends to be of a...