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SHM in Action 2013 Participants

	Mistras Group Inc	This single channel pulser/receiver node has a 4-channel multiplexer for four single or dual-crystal transducers, of two separated transducers used in a pitch-catch configuration. Wireless communication between the node and other software/hardware components is possible using Zigbee or Hart protocols. An SD memory card or data logger mode optimizes data acquisition and storage. this UT node is an ultra-low power with a two year battery life possible at one measurement per day. The 16116 is designed for intrinsically safe certification and use for Structural Health Monitoring in the oil&gas and petrochemical industries.
	Advitam	1. Scour Genius is a cluster box using a combination of sensors such as tiltmeters and accelerometers paired with proprietary software to characterize the response of the structure to scour events, rather than simply trying to quantify the amount of scour. 2. The EScan Void Detector uses the capacitance method to quickly and efficiently show in real time where air voids and white paste/soft grout are located; this is applicable to external Post tensioning ducts and is useful in determining areas of grout defects 3. The UScan Flaw Detector uses ultrasonic principles to measure wire defects (e.g. breaks) from the cable end and is applicable to post tensioning anchorage areas where the wire ends are accessible; the US pulse travels 1-2m up the wire before coming back, and depending on the reflection we can tell if the individual strand is broken.
	Princeton University / IBM Research Division	Princeton University and IBM's Research Division have collaborated in creating a cloud based data management platform for large-scale SHM projects. The Streicker Bridge at Princeton University Campus has been equipped with 100+ fiber-optic long-gauge strain and temperature sensors. The bridge is used as a research and teaching tool and researchers from Princeton University created the algorithms for data processing and analysis. A real-time connection to the fiber optics sensor enables data transfer, storage, analysis and visualization of live and historic data in the cloud based on IBM's Measurement and Management Technology (MMT) platform. Demo presents the platform combining short film and / or live connection to the system.
	Beijing Institute of Technology	Twin-robot ultrasonic NDT system contains mechanical, electronic and software components. Mechanical part is the basis of the entire testing system, include robot, base, rail of work-piece movement, water circulation system, work-piece frame. The hardware part contains all electronic hardware, the IPC, ultrasonic transducers, pulse transmitter/receiver card, high-speed data acquisition card. The software contains parameters setup, scan images display, signal process, motion control, shaped profile tracking, system management. With fast detection speed, high precision, good flexibility, the system can test large curved surface composites in aerospace, shipbuilding, automobile industry and other fields.
	Metis Design Corporation	The live demonstration will consist of a composite beam in a 4-point bend test fixture in stroke control. A single MD7 node will facilitate all testing. Guided wave methods will be used confirm no damage prior to testing and presence of damage after testing. Acoustic emission will be used to localize impact events. Real-time load, strain and temperature data will be streamed through the MD7 bus throughout the test in addition to state of heath via CNT network resistance. The system will be controlled, and data displayed, using a tablet.
	BaySpec, Inc.	Live demo and overview of current applications will be presented covering recent applications use aerospace, military/defense, nuclear, and other structural health monitoring systems.
	Nanjing University of Aeronautics and Astronautics	Video demonstration will be presented of a regional level aircraft structural SHM system including 4 subsystems and a regional manager. Subsystem 1 is an integrated multi-channel scanning system which is used to localize the structural damage and impact. Subsystem 2 is a miniaturized digital impact monitor which has very low weight and energy consuming. Subsystem 3 is a wireless strain monitoring system. This system is combined with Subsystem 4 which is a FBG based optic fiber monitoring system to form a strain distribution monitoring system to monitor the load distribution of the structure. The monitoring object is a carbon fiber wing structure in the demonstration.
	Airbus	SHM everywhere: The Online Maintenance Assistance System (OMA) was developed by Airbus and UAS Osnabrueck for Remote Testing and Monitoring. It is Laptop/Tablet based and allows an encrypted two-channel Video/Screen conference optimized for NDT and SHM specific signals. OMA will be used to remotely control an Airbus experiment in Germany in real time.
	Acellent Technologies, Inc.	Acellent Technologies Inc. will showcase two of our latest technology developments for diverse market applications. Acellent light-weight, modular and scalable meter-long SMART Layer tape is designed to interface wirelessly with a remote controller for accurately monitoring of the integrity of rotating machinery in harsh environments encountered in the paper manufacturing industry. Using its latest ScanGenie series hardware and newly developed SmartPatch 3D software, Acellent SMART Layer sensor network will demonstrate the capability to detect changes in pressure and inception of cracks on a rotating shaft using its active sensing mode and display the results on a light-weight touchscreen remote controller.
	The Hong Kong Polytechnic University	The "Mega-Structure Diagnostic and Prognostic System" for the Canton Tower of 600 m high is the first comprehensive long-term structural health monitoring (SHM) system implemented on skyscrapers. This system consists of over 700 sensors of 16 types and is composed of 5 modules: Module 1 - Sensory System, Module 2 -Data Acquisition and Transmission System, Module 3 - Data Processing and Control System, Module 4 - Data Management System, Module 5 - Structural Health Evaluation System, and Module 6 - Inspection and Maintenance System. This engineering paradigm realizes innovation in SHM in the following aspects: (i) modular system design for easy maintenance and upgrade, (ii) accomplishment of life-cycle SHM starting from 'birth' of the structure through integration of in-construction monitoring and in-service monitoring, (iii) imaginative practice of integrating on-line SHM with real-time feedback vibration control, (iv) hybrid tethered and wireless signal network primed for harsh operational conditions, (v) distributed sensing with over 200 FBG sensors and long-distance (500 to 1000 m) vision inspection, (vi) multi-level diagnosis and prognosis strategies, and (vii) all-round system protection customized for severe surrounding environment. This project also serves for promoting SHM research and educating SHM technology: a benchmark study has been initiated for sharing the field monitoring data with investigators worldwide for research purpose and an interactive demo system has been developed for display to sightseers for SHM technology popularization. From 2008 to 2013, the instrumented system has collected monitoring data of the Canton Tower during over 20 earthquakes and 13 typhoons.
	8tree, LLC	8tree will practically demonstrate the efficacy of its revolutionary approach to designing application-specific 3D optical scanners, in manufacturing and inspection environments. Furthermore, we will show that the integration of patent-pending augmented reality and gesture control techniques create an amazingly intuitive user-experience. This design makes the man-machine interface completely transparent thereby enhancing inspection efficiency by delivering actionable results in real-time.
	VCE Innovation Services	A real case performed recently in Europe will be presented. The integrity of a structure experiencing an impact from blasting had to be assessed within minutes. A video showing the impact, the related signals from monitoring as well as the answer of the decision support system will be presented.
	4DSP, LLC	4DSP will be demonstrating the commercial use of a new fiber optic sensing platform which brings structural sensing and health monitoring into a new era. A collection of four short demonstrations will show the benefits of this FBG optical fiber based platform. A single, 12 inch fiber optic cable epoxied to the surface of a 6061 T6 aluminum beam provides a continuous mechanical and thermal strain profile. When bent beyond its yield strength and brought back to an unstressed state, the output profile allows engineers to qualify and quantify any induced damage. The residual strains created by nonlinear deformation show not only how much the beam was plastically deformed, but also exactly where along the beam the plastic deformation occurred. The second demo shows a possible installation to the skins of a commercial jetliner. When the wings are deflected to simulate lifting loads, the RTS150 displays a color-coded strain profile. Tension is displayed as red, compression is dark blue, and a zero strain state is shown as green. When the wing is subjected to torsion, the 45 degree saw-tooth pattern shows the alternating tension and compression torsional deformations. The last two demos demonstrate the composite material embedment capabilities. Composites can become "smart materials" by simply laying fiber optics down during the layup process, providing means of continuous monitoring, damage detection, and control system feedback all throughout a structure's lifecycle. One of the composite beams is completely undamaged. When bent, one observes the expected linear strain profile. The second beam has been artificially damaged by creating a delamination between two layers. When this second beam is bent, the linear strain profile is disrupted by a region of significantly larger strains where the delamination is located. This technology allows engineers to locate, quantify, and track various composite failure modes, each having their own unique strain profile.
	Universite de Sherbrooke	A correlation-based imaging technique called «Excitelet» is demonstrated to monitor crack growth on an aluminum lap-joint, representative of an aircraft component. The principle is based on guided wave generation and sensing using a compact micro-machined piezoceramic array and measurement of reflections induced by potential damage. The method uses a propagation model to correlate measured signals with a bank of signals and imaging is performed using a round-robin procedure (Full-Matrix Capture). This method allows taking into account the transducer dynamics and finite dimensions, multi-modal and dispersive characteristics of the material and complex interaction between guided wave and damage. The aluminum lap-joint is instrumented with a compact linear array of 8 circular piezoceramic elements of 3 mm diameter each. The imaging algorithm is applied to detect and follow the growth of a crack between rivets under fatigue loading. Imaging results obtained using both A0 and S0 modes are shown.
	Structures And Composites Laboratory	The Structures and Composites Laboratory (SACL) will demonstrate how a simple structure with a complex configuration can be transformed into an intelligent structure with self-state sensing capabilities by employing a stretchable network containing distributed temperature, strain, and piezoelectric sensors. An off-the-shelf programmable robotic arm, which is originally designed to perform a simple "pick and place" operation, will be outfitted with an e-skin with an embedded stretchable sensor network in order to be able to "sense" the change in the surrounding environment and react intelligently to accomplish its original targeted mission.
	Tongji University	The presented monitoring system is installed on the Shanghai Yangtze River Main Navagation Channel Bridge. The Shanghai Yangtze River Bridge, with a total length of approximately 8.5 km, is a part of the Chongming Cross River Passage Project connecting the Shanghai urban area and the Chongming Island. Its main navigation channel bridge is a double pylon double cable plane cable-stayed bridge with slotted box girder. The bridge is 1430 meters long with a central span of 730 m. On Oct. 31st of 2009, the bridge was formally opened to traffic. According to the site and bridge mechanical cha-racteristics, an operational monitoring system with 253 sensors, including environmental sensors, load sensors, and structural response sensors, is installed for continuous monitoring of bridge condition and performance. Since the formal opening to traffic, the bridge monitoring system has operated for almost four years.
	Optilab	Optilab will demonstrate its 2nd Generation FBG Sensor Interrogator (FSI) with dynamic sensing gain control and >200 mW optical power. Optilab will also discuss the progress of a new compact interrogator with 1 KHz speed that consumes < 20 W, weighs <3 lbs, and is qualifiable for Aerospace applications.
	High Performance Materials Institute, Florida State	Research work at the High Performance Materials Institute (HPMI) of the Florida State University has led to the development of proprietary triboluminescent sensor technologies and a technology startup company (NPGroup, Inc.). Video demo will show preliminary tests demonstrating real time damage monitoring in reinforced concrete members with the in-situ triboluminescent optical fiber (ITOF) sensor. The sensor is being developed for monitoring earthquake, terrorist blasts and shipping impacts on civil infrastructure systems.
	Kinemetrics Open Systems & Services	As part of the Abu Dhabi Municipality's Seismic Hazard and Risk Assessment project, Kinemetrics Open Systems & Services was tasked to implement integrated, state-of-the-art SHM systems on several unique and prestigious structures in Abu Dhabi. Typical SHM systems are composed of up to 30 acceleration sensors within the building, a wind velocity/direction sensor at the roof, and a three-component downhole acceleration sensor near the building footprint. Data from these systems are all time-synchronized and recorded continuously at 200sps in real-time. A real-time data processing and analysis software package was developed to observe and display the dynamic characteristics (e.g., modal frequencies, damping ratios, and mode shapes) and responses (e.g., accelerations, velocities, displacements, and inter-story drifts) of the structures and their time variations. Since most of the SHM data are due to ambient forces (i.e., low amplitude vibrations with very low signal-to-noise ratios), advanced signal processing and system identification techniques, based on statistical signal processing and stochastic filtering theories, are used for data processing and analysis. A demo will consists of a short presentation describing the system components and sensor location combined with a short recorded or live connection to the ADNEC Capital Gate "Leaning Tower" of Abu Dhabi SHM System.
	Technical University of Madrid, Spain	The performance of the last version of a single PAMELA SHM™ system will be presented. PAMELA SHM™ system consists of the embbedde electronic "all in one" SHM miniaturized device, PAMELA III (Phased Array Monitoring for Enhanced Life Assessment, version III) installed directly on the integrated PhA transducer surface bonded onto an aluminum plate. The system is highly automated, easy to install and operate with capacity to perform quickly many different SHM tests in huge range of test configurations. The system can also be controlled wirelessly having only one cable for 12DC power supply. The system in its actual version is designed in order to have highly efficient, reliable and flexible development platform for SHM mapping algorithms and future high resolution SHM maps with easy interpretative information about any temporal or permanent changes of the host structure.
	Indian Institute of Technology Delhi	PZT sensors are embedded in a 4 m long concrete beam which is simply supported and given sinusoidal load at its center using an inertia-type shaker.The beam is provided with a notch to create damage.The conductance and susceptance signatures for the beam was acquired for the undamaged stage using LCR meter and its equivalent circuit (AD5933). The beam is excited using shaker and the voltage embedded PZT sensor is harvested using an in-house fabricated circuit and LT3588-1 circuit. The harvested energy is stored in a battery which is used by the AD5933 circuit for Structural Health Monitoring.

How to participate:

Complete the form here to participate. A short description of the demo is required. More information about SHM in action is given below.

Who can participate:

• workshop exhibitors,
• workshop presenters and,
• workshop participants.

Objective:

To show how a structural health monitoring (SHM) system practically works. If you are working with SHM systems and would like to show in a short presentation how they practically work, then you shall participate. This presentation can be additional to exhibits or oral presentations and is specifically targeted to underline the practical aspect of the SHM.

Motivation:

There is a significant progress in SHM technology recently for a variety of applications. This presentation shall focus on how these SHM systems work in practice in terms of installation, handling, interpretation, and robustness for the following applications:

• operational loads monitoring,
• damage detection,
• health monitoring, and
• life cycle management.

The session targets at:

• showing the audience how SHM works in practical applications,
• better understanding the practical issues of different SHM systems,
• getting further feedback and requirements expressed from current and potential SHM users, and
• SHM users to share their experience.

Procedure:

The session intends to show as much of demonstration cases as possible, addressing as many of the aspects mentioned below:

• the way the monitoring system and the test is operated;
• type of sensors and actuators (if required) and their way of attachment to components, linkage to the signal generation and acquisition unit, etc.;
• signal generation and acquisition unit as a hardware and how it operates;
• the way input data are entered and sensor data are received and how the result is presented during the test;
• procedure for sensor signal processing;
• the 'man-machine interface' such as data input and output display;
• component(s) tested, area/volume to be monitored, loading procedure and the damage initially observed by conventional means of non-destructive testing;
• characteristics of the system such as weight, size, volume, reliability, cost, etc.

Each presentation is allowed no more than 5 minutes through a video, internet or a hardware live demonstration only , which will be directly displayed to the audience on a large screen. It is mandatory that the SHM system is shown in action. Static displays are not acceptable . Each presentation will be followed by a brief Q&A session where the SHM demonstrators must answer questions from the audiences.

The test cases being presented can be either based on self-developed or purchased SHM systems. The source of the SHM hardware is eligible to be mentioned but no further advertisement from or about the supplier of the SHM system will be accepted.

Any detailed background of the SHM system and the testing can be provided through the manuscript in the workshop proceedings. Provision of a manuscript in the proceedings is however not mandatory. Exhibitors can provide a direct video link to their booth at the workshop such that demonstrations can be made from there and can be directly transmitted to the audience via a screen.