Liming Salvino

Journal Article Journal of Computing in Civil Engineering · January 1, 2026 Works of social infrastructure, such as public parks and markets, play a crucial role in fostering well-being in urban communities. To evaluate their effectiveness, there is a need for nonintrusive, continuous mapping of pedestrian movement patterns. While ... Full text Cite

Embedded sensing system for shipboard damage control scenarios

Conference Proceedings of SPIE the International Society for Optical Engineering · January 1, 2025 Naval ship environments are harsh and physically demanding settings for ship crews. During emergency response scenarios, such as blast, fire, and flooding, significant physiological and psychological stress is imposed on the damage control teams responsibl ... Full text Cite

Pedestrian footstep localization using a deep convolutional network for time difference of arrival estimation

Conference Proceedings of SPIE the International Society for Optical Engineering · January 1, 2024 This paper presents a resource-constrained localization system that uses geophones to map pedestrian locations in outdoor spaces. It addresses the need to non-intrusively monitor the level of community utilization of social infrastructure, such as public p ... Full text Cite

Integrated Vision-Body Sensing System for Tracking People in Intelligent Environments

Chapter · January 1, 2023 An integrated sensing architecture and “big data” analytics that leverages real-time human biometric monitoring with state-of-the-art human activity recognition (HAR) can open exciting new possibilities in human health and performance monitoring. We presen ... Full text Cite

Wearable Sensor Platform to Monitor Physical Exertion Using Graphene Motion Tape

Conference Lecture Notes in Civil Engineering · January 1, 2023 A primary concern during physically demanding activities is the risk of musculoskeletal injury. Sensing systems that monitor muscle activity can provide early warnings of physical fatigue, thereby improving the safety and effectiveness of labor. This work ... Full text Cite

Integration of wearable and ambient sensors towards characterization of physical effort

Conference Materials Research Proceedings · January 1, 2023 Human performance monitoring in complex operational environments calls for sensing solutions that measure human physiology as well as human interactions with their surroundings. Recent advances in multimodal sensing have led to the development of intellige ... Full text Cite

Special issue of biomedical engineering letters on advances in intelligent prostheses

Journal Article Biomedical Engineering Letters · February 1, 2020 Full text Cite

Development of a shipboard wireless monitoring system to monitor ship crews during extreme blast load exposure

Conference Structural Health Monitoring 2019 Enabling Intelligent Life Cycle Health Management for Industry Internet of Things Iiot Proceedings of the 12th International Workshop on Structural Health Monitoring · January 1, 2019 Naval ships can be exposed to munition detonations during their operations in theaters of engagement. Munition blasts can be devastating to the ship structure as well as to the crew within the ship. Current understanding of the impact of blast loads on shi ... Full text Cite

Human SHM-healing assessment of an externally fixated fractured femur

Conference 8th European Workshop on Structural Health Monitoring Ewshm 2016 · January 1, 2016 The application of significant research outcomes in the field of Structural Health Monitoring (SHM) has led to the application and demonstration of related technologies in the field of aerospace, marine, civil and structural engineering. Recently, there ar ... Cite

HHT-based structural health monitoring

Chapter · January 1, 2013 Full text Cite

Hybrid wireless hull monitoring system for naval combat vessels

Journal Article Structure and Infrastructure Engineering · July 1, 2012 There is increasing interest by the naval engineering community in permanent monitoring systems that can monitor the structural behaviour of ships during their operation at sea. This study seeks to reduce the cost and installation complexity of hull monito ... Full text Cite

Bayesian model updating approach for systematic damage detection of plate-type structures

Conference Conference Proceedings of the Society for Experimental Mechanics Series · June 6, 2012 This paper presents a model-based monitoring framework for the detection of fatigue-related crack damages in plate-type structures commonly seen in aluminum ship hulls. The monitoring framework involves vibration-based damage detection methodologies and fi ... Full text Cite

Structural damage identification in stiffened plate fatigue specimens using piezoelectric active sensing

Conference Structural Health Monitoring 2011 Condition Based Maintenance and Intelligent Structures Proceedings of the 8th International Workshop on Structural Health Monitoring · December 1, 2011 This paper presents a guided wave structural health monitoring (SHM) technique, based on the use of piezoelectric active-sensors, used to determine the structural integrity of stiffened aluminum plates. For damage detection, the transmitted power between p ... Cite

Health monitoring of aluminum weldings with the surface response to excitation (SuRE) approach

Conference Structural Health Monitoring 2011 Condition Based Maintenance and Intelligent Structures Proceedings of the 8th International Workshop on Structural Health Monitoring · December 1, 2011 Recently, the impedance and Lamb wave methods were used to evaluate the integrity of welded structures. Both approaches were proven to detect defects at the other side of the welded butt joints. In this paper, the Surface Response to Excitation (SuRE) appr ... Cite

Wear estimation by testing the elastic behavior of tool surface

Journal Article International Journal of Machine Tools and Manufacture · October 1, 2011 Impedance and Lamb wave structural health monitoring (SHM) techniques are two common approaches used to successfully monitor the integrity of a variety of structures. In this paper, the feasibility of applying both methods for monitoring tool wear is inves ... Full text Cite

Monitoring the integrity of machine assemblies by using surface response to excitation (SuRE) approach

Conference Rast 2011 Proceedings of 5th International Conference on Recent Advances in Space Technologies · September 1, 2011 Fully automated integrity inspections of assembled autonomous space vehicles components are essential for their reliable and cost effective operation. Many researchers have already used structural health monitoring (SHM) methods for detecting loose bolts, ... Full text Cite

Reliability analysis and damage detection in high-speed naval craft based on structural health monitoring data

Journal Article Structural Health Monitoring · July 1, 2011 Current and future trends in naval craft design are leaning toward the development of high-speed and high-performance vessels. Lack of information on wave-induced loads for these vessels presents a challenge in ensuring their safety that is best tackled wi ... Full text Cite

A comparison of impedance and Lamb wave SHM techniques for monitoring structural integrity of and through welded joints

Conference Proceedings of SPIE the International Society for Optical Engineering · May 24, 2011 In this study, the feasibility of monitoring the structural integrity of welded thick aluminum plates was experimentally tested using two widely used SHM methods: impedance and Lamb wave analyses. The test structure was fabricated from two 1/4 inch thick a ... Full text Cite

Characterization and compaction of Lamb wave data using a combination of S and wavelet transformations

Conference Proceedings of SPIE the International Society for Optical Engineering · May 23, 2011 During the interpretation of the Lamb wave data, the main concern is often the arrival times of wave groups. Group arrival times determine the distance of the source or the reflector. The inspection of sensory signal envelopes is satisfactory to identify a ... Full text Cite

Life-cycle ship reliability assessment, damage detection, and optimization

Conference 11th International Conference on Fast Sea Transportation Fast 2011 Proceedings · January 1, 2011 The present paper collects a body of scientific results obtained at Lehigh University, under the sponsorship of the U.S. Office of Naval Research. The aim of the entire research project was to build a general framework for the probabilistic analysis of shi ... Cite

Real-time strain monitoring of a navy vessel during open water transit

Journal Article Journal of Ship Research · December 1, 2010 In this work we describe the installation of a real-time, fiber-optic strain monitoring system aboard a US Navy vessel undergoing sea trials. The system is lightweight, unintrusive, corrosion resistant, and provides dynamic strain response measurements fro ... Cite

A probabilistic model updating algorithm for fatigue damage detection in aluminum hull structures

Conference ASME 2010 Conference on Smart Materials Adaptive Structures and Intelligent Systems Smasis 2010 · January 1, 2010 The use of aluminum alloys in the design of naval structures offers the benefit of light-weight ships that can travel at high-speed. However, the use of aluminum poses a number of challenges for the naval engineering community including higher incidence of ... Full text Cite

Fatigue life monitoring of metallic structures by decentralized rainflow counting embedded in a wireless sensor network

Conference ASME 2010 Conference on Smart Materials Adaptive Structures and Intelligent Systems Smasis 2010 · January 1, 2010 Fatigue is one of the most widespread damage mechanisms found in metallic structures. Fatigue is an accumulated degradation process that occurs under cyclic loading, eventually inducing cracking at stress concentration points. Fatigue-related cracking in o ... Full text Cite

Wireless hull monitoring systems for modal analysis of operational naval vessels

Conference Conference Proceedings of the Society for Experimental Mechanics Series · December 1, 2009 There is increasing interest by the naval engineering community in permanent monitoring systems that can monitor the structural behavior of ships during their operation at sea. Hull monitoring systems offer opportunities to better understand the performanc ... Cite

Monitoring of a high speed naval vessel using a wireless hull monitoring system

Conference Structural Health Monitoring 2009 from System Integration to Autonomous Systems Proceedings of the 7th International Workshop on Structural Health Monitoring Iwshm 2009 · January 1, 2009 As the U.S. Navy acquires high-performance littoral combat ships, there is a growing need for cost-effective hull monitoring systems. High-performance ships are typically constructed from light-weight construction materials such as aluminum. In addition, t ... Cite

Using diffuse vibrations interferometry for structural health monitoring of high-speed naval ships

Conference Structural Health Monitoring 2009 from System Integration to Autonomous Systems Proceedings of the 7th International Workshop on Structural Health Monitoring Iwshm 2009 · January 1, 2009 It has been demonstrated theoretically and experimentally that an estimate of the Impulse response (or Green's function) between two receivers can be obtained from the long-time average of the cross-correlation of diffuse vibrations (or ambient noise) ... Cite

Structural health monitoring for ship structures

Conference Structural Health Monitoring 2009 from System Integration to Autonomous Systems Proceedings of the 7th International Workshop on Structural Health Monitoring Iwshm 2009 · January 1, 2009 Currently the Office of Naval Research is supporting the development of structural health monitoring (SHM) technology for U.S. Navy ship structures. This application is particularly challenging because of the physical size of these structures, the widely v ... Cite

Analysis of bearing vibration signatures using empirical mode decomposition and Hilbert-Huang transform

Conference Proceedings of SPIE the International Society for Optical Engineering · November 5, 2007 Vibration-based damage detection has grown over the past decade with considerable attention paid towards monitoring of civil structures and machines. Much of the focus has been based on comparison of system properties 'before' and 'after' damage, with the ... Full text Cite

Hull structure monitoring for high-speed Naval ships

Conference Structural Health Monitoring 2007 Quantification Validation and Implementation Proceedings of the 6th International Workshop on Structural Health Monitoring Iwshm 2007 · January 1, 2007 The importance and the need for equipping high-speed naval vessels with an operational real-time structural health monitoring system are discussed. Currently, there are several Navy acquisition programs that contain ship and hull monitoring aspects. Exampl ... Cite

Structural health monitoring using empirical mode decomposition and the Hilbert phase

Journal Article Journal of Sound and Vibration · June 27, 2006 This paper discusses a new signal processing tool involving the use of empirical mode decomposition and its application to health monitoring of structures. Empirical mode decomposition is a time-series analysis method that extracts a custom set of basis fu ... Full text Cite

Hilbert-Huang transform stability spectral analysis applied to flutter flight test data

Journal Article AIAA Journal · April 1, 2006 A new method, the Hilbert-Huang transform (HHT), has been applied to analyze the aerostructures test wing (ATW) flight flutter data from NASA Dryden Flight Research Center. The analysis shows the yielding of the wing after the onset of flutter, but just be ... Full text Cite

Detecting impact damage in experimental composite structures: An information-theoretic approach

Journal Article Smart Materials and Structures · April 1, 2006 This work describes a procedure for detecting the presence of damage-induced nonlinearities in composite structures using only the structure's vibrational response. Damage is assumed to change the coupling between different locations on the structure from ... Full text Cite

Damage assessment of an isolation system

Conference Proceedings of SPIE the International Society for Optical Engineering · October 7, 2005 A novel method of structural damage detection, aimed at monitoring the state of a structure based on measured time series data, is presented for the analysis and interpretation of underwater explosion (UNDEX) test data. This method extracts sets of simple ... Full text Cite

EMD and instantaneous phase detection of structural damage

Chapter · January 1, 2005 In this chapter, a new structural health-monitoring and damage-detection method is presented. A general time-frequency data analysis technique (empirical mode decomposition and the Hilbert-Huang spectrum) in conjunction with a wave-mechanics-based concept ... Full text Cite

Detecting structural damage using adaptive feature extraction from transient signals

Conference Proceedings of SPIE the International Society for Optical Engineering · October 25, 2004 The focus of this work is on damage detection in transient structural response time series data recorded during an underwater shock experiment. A unique data-driven approach where damage features are extracted, evaluated, and determined based on the instan ... Full text Cite

Signal Processing and Damage Detection in a Frame Structure Excited by Chaotic Input Force

Conference Proceedings of SPIE the International Society for Optical Engineering · November 27, 2003 This paper discusses the development of a general time-frequency data analysis method, the Empirical Mode Decomposition (EMD) and Hubert Spectrum, and its application to structural health monitoring. The focus of this work is on feature extraction from str ... Full text Cite

Sensitivity of Hilbert Magnitude and Phase to Structural Damage

Conference Proceedings of SPIE the International Society for Optical Engineering · November 26, 2003 This paper discusses a new signal-processing tool involving the use of empirical mode decomposition and its application to health monitoring of structures. Empirical mode decomposition is a time series analysis method that extracts a custom set of basis se ... Full text Cite

Extracting instantaneous phase features for structural health monitoring

Conference Structural Health Monitoring 2003 from Diagnostics and Prognostics to Structural Health Management Proceedings of the 4th International Workshop on Structural Health Monitoring Iwshm 2003 · January 1, 2003 A general time-frequency data analysis method, the Empirical Mode Decomposition (EMD) and Hubert Spectrum, in conjunction with a wave-mechanics-based methodology is developed for structural health monitoring. Sets of simple basis function components, known ... Cite

Health monitoring of one dimensional structures using empirical mode decomposition and the Hilbert-Huang Transform

Journal Article Proceedings of SPIE the International Society for Optical Engineering · January 1, 2002 This paper discusses a new signal processing tool involving the use of empirical mode decomposition and its application to health monitoring of structures. Empirical mode decomposition is a time series analysis method that extracts a custom set of basis se ... Full text Cite

A new spectral representation of earthquake data: Hilbert spectral analysis of station TCU129, Chi-Chi, Taiwan, 21 September 1999

Journal Article Bulletin of the Seismological Society of America · October 1, 2001 A new method of spectral analysis, using an approach we call the empirical mode decomposition (EMD) and the Hilbert spectrum analysis (HSA), is presented. The EMD method decomposes any data into a finite number of intrinsic mode function (IMF) components w ... Full text Cite

A wave approach to estimating frequency-dependent damping under transient loading

Journal Article Journal of Sound and Vibration · March 23, 2000 A wave model is proposed for estimating damping loss factor as a function of frequency for a beam with arbitrary transient loading applied through the boundary conditions. In contrast to modal methods which provide measures of damping only at the modal fre ... Full text Cite

Empirical mode analysis of structural response and damping

Journal Article Proceedings of the International Modal Analysis Conference IMAC · January 1, 2000 A general method for the analysis of a time series, called the Empirical Mode Decomposition (EMD) and Hilbert Spectrum method, has recently been developed by Huang et al. This method contains two parts: the first part (EMD) decomposes any given time series ... Cite

Empirical mode analysis of structural response and damping

Conference Proceedings of SPIE the International Society for Optical Engineering · January 1, 2000 A general method for the analysis of a time series, called the Empirical Mode Decomposition (EMD) and Hilbert Spectrum method, has recently been developed by Huang et al. This method contains two parts: the first part (EMD) decomposes any given time series ... Cite

Predictability in time series

Journal Article Physics Letters A · December 25, 1995 We introduce a technique to characterize and measure predictability in time series. The technique allows one to formulate precisely a notion of the predictable component of given time series. We illustrate our method for both numerical and experimental tim ... Full text Cite

Smoothness implies determinism: A method to detect it in time series

Journal Article Physical Review Letters · January 1, 1994 Continuity on an embedded phase space is enough to imply determinism in time series. Also, it is possible to define infinitely many arbitrary vector fields over an attractor. We exploit this arbitrariness to generate a detector of smoothness and therefore ... Full text Cite

"Smoothness" in embedded time-series

Conference Proceedings of SPIE the International Society for Optical Engineering · November 18, 1993 We describe a new approach to discriminating between "smoothness" and randomness in a time series. The method, which is applicable to both map and flow data, exploits an arbitrariness in the choice of vector field for computation of a statistic forming the ... Full text Cite

Calculation of density fluctuation contributions to thermodynamic properties of simple fluids

Journal Article Journal of Chemical Physics · January 1, 1992 An equation of state, expressed in the form of a recursion relation for the Helmholtz free energy density, is presented. This equation of state represents the free energy density as an initial mean field free energy density, plus a sum of density fluctuati ... Full text Cite