Relevant bibliographies by topics / Structural dynamics Testing

Academic literature on the topic 'Structural dynamics Testing'

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Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Structural dynamics Testing"

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Skull, L. C., and C. R. Wright. "VALID STRAIN MEASUREMENTS FOR STRUCTURAL DYNAMICS TESTING." Experimental Techniques 25, no. 3 (May 2001): 42–44. http://dx.doi.org/10.1111/j.1747-1567.2001.tb00024.x.

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Hallauer, W. L., and S. E. Lamberson. "A LABORATORY PLANAR TRUSS FOR STRUCTURAL DYNAMICS TESTING." Experimental Techniques 13, no. 9 (September 1989): 24–27. http://dx.doi.org/10.1111/j.1747-1567.1989.tb01051.x.

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SUHIR, E. "STRUCTURAL DYNAMICS OF ELECTRONIC SYSTEMS." Modern Physics Letters B 27, no. 07 (March 19, 2013): 1330004. http://dx.doi.org/10.1142/s0217984913300044.

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The published work on analytical ("mathematical") and computer-aided, primarily finite-element-analysis (FEA) based, predictive modeling of the dynamic response of electronic systems to shocks and vibrations is reviewed. While understanding the physics of and the ability to predict the response of an electronic structure to dynamic loading has been always of significant importance in military, avionic, aeronautic, automotive and maritime electronics, during the last decade this problem has become especially important also in commercial, and, particularly, in portable electronics in connection with accelerated testing of various surface mount technology (SMT) systems on the board level. The emphasis of the review is on the nonlinear shock-excited vibrations of flexible printed circuit boards (PCBs) experiencing shock loading applied to their support contours during drop tests. At the end of the review we provide, as a suitable and useful illustration, the exact solution to a highly nonlinear problem of the dynamic response of a "flexible-and-heavy" PCB to an impact load applied to its support contour during drop testing.
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Wei, Jian Zheng, Hui Feng Tan, Jian Xin Yu, and Xing Wen Du. "Dynamic Testing and Analysis of Inflatable Beams." Applied Mechanics and Materials 226-228 (November 2012): 546–52. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.546.

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Dynamic testing of an inflatable beam has been performed to evaluate structural natural frequencies and modal damping ratios. The inflatable beam has a pattern of six composite fiber strips inside thin-film structure that increases its local stiffness that the structure can be self-supporting in the gravity environment when the internal pressure is released. A measurement setup was installed, and the dynamic testing was performed in this self-supporting state. Dynamic characters of the beams were tested with internal pressure or not when the beam had a 2.0kg mass on the top. Moreover, the dynamic characters before rolled up were contrasted to one after. The experimental results indicate that the self-supporting inflatable beams had better bending stiffness, and the curl folding process had an impact on the dynamic characteristics of the inflatable beam. The pressure affection is not obvious on dynamics of the beam.
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JAHED-MOTLAGH, MOHAMMAD R., BEHNAM KIA, WILLIAM L. DITTO, and SUDESHNA SINHA. "FAULT TOLERANCE AND DETECTION IN CHAOTIC COMPUTERS." International Journal of Bifurcation and Chaos 17, no. 06 (June 2007): 1955–68. http://dx.doi.org/10.1142/s0218127407018142.

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We introduce a structural testing method for a dynamics based computing device. Our scheme detects different physical defects, manifesting themselves as parameter variations in the chaotic system at the core of the logic blocks. Since this testing method exploits the dynamical properties of chaotic systems to detect damaged logic blocks, the damaged elements can be detected by very few testing inputs, leading to very low testing time. Further the method does not entail dedicated or extra hardware for testing. Specifically, we demonstrate the method on one-dimensional unimodal chaotic maps. Some ideas for testing higher dimensional maps and flows are also presented.
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Carneiro, J. O., F. J. Q. de Melo, J. T. Pereira, and V. Teixeira. "Pseudo-Dynamic Method for Structural Analysis of Automobile Seats." Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 219, no. 4 (December 1, 2005): 337–44. http://dx.doi.org/10.1243/146441905x52964.

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This work describes the application of a pseudo-dynamic (PsD) method to the dynamic analysis of passenger seats for the automotive industry. The project of such components involves a structural test considering the action of dynamic forces arising from a crash scenario. The laboratory certification of these automotive components consists essentially on the inspection of the propagation and extension of plastic deformations zones in metallic members of the seat structure as consequence of the mutual action between the seat and the passenger fastened to the seat via seat belt anchorages. This work presents a relatively simple experiment using PsD techniques as a novel method to perform a test equivalent to the dynamic model of a dummy-seat pair subjected to impulsive loads from a car crash. Essentially, the PsD test method is a hybrid and hierarchic computer-driven testing procedure where a numerical algorithm and experimental step are used and combined on-line in order to solve a problem in the scope of structural dynamics. The implementation of the method is not expensive and has the leading advantage of offering the operator a total control of any intermediate structure state during the test still keeping the realism of a real dynamic testing.
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Chau, Vu Minh, and Hien Bich Vo. "Structural Dynamics Analysis of 3-U CubeSat." Applied Mechanics and Materials 894 (September 2019): 164–70. http://dx.doi.org/10.4028/www.scientific.net/amm.894.164.

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The development of CubeSats has been advanced significantly during the past two decades for both scientific research and industrial purposes. During the manufacturing process, every CubeSat must satisfy various system requirements in which the structural analysis is one of the most vital necessity in order to assure a normal operation of the CubeSat during its working time in space. In the conceptual design phase, structural dynamics is a mandatory step to determine the natural frequencies of individual bodies, the deformation and stress induced at the corresponding vibration modes to prevent structural failure. In this work, IGOSat, a 3-Unit CubeSat, which was developed at the Paris Diderot University is exanimated in term of modal, harmonic response, and random vibration analysis at the time of ground testing as well as the launching phase using ANSYS software. These numerical simulations conducted according to the CubeSat Design Specification and the system requirements of QB50 project. The minimum natural frequency of the CubSat obtained to be 363.17 (Hz), which passed the required frequency of 90 (Hz). Moreover, the Harmonic and Random vibration analyses indicate that the peak response of normal stress, as well as deformation values obtained, are far lesser compared to the yield strength of the frame structure and subsystem materials. Hence, our numerical analysis found that the CubeSat remains intact during the launch environment.
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Okuma, Masaaki, Ward Heylen, Hisayoshi Matsuoka, and Paul Sas. "Identification and Prediction of Frame Structure Dynamics by Spatial Matrix Identification Method." Journal of Vibration and Acoustics 123, no. 3 (March 1, 2001): 390–94. http://dx.doi.org/10.1115/1.1377020.

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This paper presents the results of using an experimental spatial matrix identification method to predict the dynamics of a frame structure under various boundary conditions. The single-input-multiple-output frequency response functions (FRFs) of the test structure under the free-free boundary condition are measured by hammer testing. Using the FRFs, a set of spatial matrices is constructed in order to represent the structural dynamic characteristics of the system by the new method. Using the spatial matrices, the dynamic characteristics of the test structure under the boundary condition of clamping 4 points is predicted. The prediction is adequately accurate for practical application. The results of the prediction demonstrate that the spatial matrices identified by this method can be used for structural modification and substructure synthesis in the field of computer-aided mechanical engineering.
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Parker, Samuel D., Michael R. Haberman, and Daniel R. Roettgen. "A technique for measurement of ultrasonic waves propagating in time-varying media." Journal of the Acoustical Society of America 152, no. 4 (October 2022): A294. http://dx.doi.org/10.1121/10.0016327.

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Laser Doppler Vibrometry (LDV) is often used in nondestructive testing to make high-fidelity, non-contact structural dynamic measurements. However, synchronized measurement on slow, structural dynamics (SD) and fast, ultrasonic (US) time scales can yield additional useful information about the overall condition of elastic structures. This work presents a technique, Dynamic Asymmetric Transmission Measurement (DATM), that enables time-aligned measurements of large-scale structural dynamics via LDV and small-scale ultrasonic signals to provide information at a particular global dynamic state of an elastic structure. This approach is applicable to structural health monitoring and generalizable to the measurement of guided ultrasonic waves propagating in structural components subjected to time-varying stress states. We demonstrate the utility of DATM by detecting and characterizing time-varying stress conditions caused by local nonlinearity due to surface-breaking cracks resulting in time-varying asymmetric transmission of US signals in beam and plate structures. The test methodology to synchronize LDV and US data is presented together with example measurements. [Sandia National Laboratories is a multimission laboratory managed and operated by National Technology & Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International Inc., for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-NA0003525.]
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Bai, Liang, Tian Hua Zhou, and Xing Wen Liang. "Study on Restoring Force Models of Steel High Performance Concrete Composite Structural Wall." Key Engineering Materials 517 (June 2012): 323–30. http://dx.doi.org/10.4028/www.scientific.net/kem.517.323.

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Steel high performance concrete (SHPC) structural wall was a combination of steel and high performance concrete. They can give full play to the advantages of steel and high performance concrete and have better dynamic behavior. Several specimens of SHPC structural walls with different parameters were tested under constant axial loading and horizontal cyclic loading. The testing phenomena and failure mechanics of those walls were compared and analyzed. On the basis of theoretic formulas and testing data, the main characteristic points and the law of stiffness degradation were presented, then, the tri-linear and four linear restoring models were built and provided. At last, the calculation formulas of stiffness parameter in restoring force model at different stages of deformation were presented. The results show that the declined strength stage of skeleton curve of specimens is related to the yielding strain of boundary steel, axial load ratio and stirrup content. The restoring force model of SHPC structural wall is thus formed for the application of nonlinear dynamics analysis as well as static structural calculations.
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Dissertations / Theses on the topic "Structural dynamics Testing"

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Hay, Neil Conway. "The simulation of random environments for structural dynamics testing." Thesis, Edinburgh Napier University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328063.

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Bonnet, Paul A. "The development of multi-axis real-time substructure testing." Thesis, University of Oxford, 2006. http://ora.ox.ac.uk/objects/uuid:39730635-b112-4775-9956-73d26d964178.

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Real-time substructure is a novel hybrid method for the dynamic testing of structures. During an experiment, the structure of interest is divided into two entities. The crucial parts for the project undertaken are physically replicated and loaded dynamically through powerful actuators while the rest is numerically modelled and solved via real-time software. The dynamics of both substructures must be accurately reproduced, as well as their mutual interaction. The applications are multiple but that of earthquake engineering is primarily considered in this research. Beyond the accurate modelling of both substructures, three main issues are crucial to the validity of a real-time hybrid simulation. Firstly, the loading equipment must be capable of imposing large loads and accurate displacements on the laboratory specimen. The behaviour of this loading system must be consistent and predictable over a wide range of frequencies and velocities. Secondly, the computational solver employed to emulate the numerical model dynamics requires stability, computational efficiency and accuracy. It must be able to deal with non-linear multi-degree of freedom systems. Thirdly, the interaction between the two substructures must be reliably emulated by a set of communication devices. The reciprocal boundary conditions must be imposed on the interface of each substructure. This notably implies quasi-instantaneous measurement and application of physical forces and displacements. The two substructures have to be solved simultaneously and in real-time. The three areas mentioned above have been investigated in this research. Initially, the laboratory installations of the hardware and software were focussed on. The servo-controlled hydraulic actuation system was optimised and a development rig was designed and constructed. It was found that hardware settings could greatly improve the general actuator performance, even though some particular situations could compromise it. This work was then complemented by an extensive study of the necessary actuation compensation. Numerous algorithms – either previously published or developed in the course of this research – were implemented and formally compared through a set of real-time experiments. Particularly, some challenging multi-axis experiments with a high level of actuator coupling were conducted. Direct extrapolation coupled with adaptive delay estimation was found to be the most effective approach to ensure synchronisation of the substructures. Attention was then given to the integration algorithms used to solve the numerical substructure problem and output the actuator demand on a real-time basis. Both explicit and implicit schemes were considered, even though an explicit formulation is required for this hybrid application. Computationally simple schemes are more suitable and several were shown to satisfy the necessary accuracy and stability requirements. Successful realtime hybrid tests were carried out with fifty degrees of freedom in the numerical substructure, including non-linear force/displacement relationships and using integration time-steps proving unconditional stability of the algorithms used. Finally, a realistic earthquake engineering application of the real-time substructure method was conducted. A steel column was tested physically as part of 20-storey building structure subject to the 1940 El Centro earthquake. To further display the usefulness of the method, an energy dissipative device was also integrated in the numerical model and its effect on the building response was shown.
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Dancila, Dragos Stefan. "Energy-dissipating tensile composite members with progressive failure." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/12474.

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Valdés, Julio R. "Simultaneous determination of frequency dependent modulus and damping from resonant column tests." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/20169.

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De, Villiers Pieter Jacobus. "Imposed loads for inaccessible roofs of light industrial steel buildings." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53460.

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Thesis (MScEng)--Stellenbosch University, 2003.
Some digitised pages may appear illegible due to the condition of the original hard copy.
ENGLISH ABSTRACT: A critical evaluation of provisions for imposed loads in the South African Loading Code for design of structures, SABS 0160-1989 (SABS), by comparison with other codes was performed earlier. The evaluation revealed the SABS loading code to be generally non-conservative in its provisions for imposed loads for a range of general and specialist occupancy classes. The SABS provision for imposed loads for inaccessible roofs was found to be substantially non-conservative in comparison with the other codes. An investigation into the imposed load for inaccessible roofs is subsequently performed in order to establish a scientific rationale through which the codified design values may be measured effectively. Due to the lack of information and the large uncertainties involved in the imposed roof load, stochastic treatment of the loads is implemented. This is in line with the stochastic modelling of loads as implemented in general. The approach applied is to select a type of building that can be regarded as a generic example of buildings to which these loads apply, and to discretisize the load into the various sub-mechanisms that translate into the imposed roof load. The probabilistic models for the load mechanisms are then quantified, either through physical load surveys, or through conducting an expert survey for those variables which are not observable. The use of expert opinion as a resource for information is not readily accessible in terms of yielding scientifically defendable results. Therefore, the expert survey is performed as a calibrated experiment whereby weights were calculated for the individual experts' opinions and their opinions combined accordingly. The probabilistic models for the load mechanisms are then translated into load effects by taking into account the physical process resulting in the load effects. By applying these mechanisms in such a way as to maximise the said load effects, equivalent uniformly distributed loads (EUDL's) were calculated for each mechanism. The probabilistic models obtained in terms of the EUDL's pose an easily accessible format through which existing load models and codified provisions can be evaluated. These load models are then utilised to evaluate the SABS provisions in terms of the level of reliability catered for by SABS ultimate limit-state design criteria. It is concluded that the SABS conservatively provides for maintenance loads on the roof, while the reliability for construction loads is non-conservative for large tributary areas and highly non-conservative for small areas. The load models so obtained can further be applied for structural reliability assessment.
AFRIKAANSE OPSOMMING: "n Kritiese evaluasie van die voorskrifte vir opgelegde belastings in die Suid- Afrikaanse Selastingskode vir die ontwerp van strukture, SASS 0160-1989 (SASS) deur 'n vergelyking met ander kodes is vroeër uitgevoer. Die evaluasie het getoon dat die SASS in die algemeen onkonserwatief is in sy voorsiening vir opgelegde belastings oor 'n bereik van algemene en spesialis okkupasie tipes. Die SASS voorskrif vir opgelegde belastings vir ontoeganklike dakke is hoogs onkonserwatief in vergelyking met die ander kodes. 'n Ondersoek na die opgelegde belasting vir ontoeganklike dakke word gevolglik uitgevoer met die doelom 'n wetenskaplike rasionaal daar te stel waardeur die gekodifiseerde voorskrifte effektief gemeet kan word. As gevolg van die gebrek aan inligting en groot onsekerhede betrokke by die opgelegde dakbelasting word stogastiese modellering geimplimenteer. Die aanslag wat gevolg is, is om 'n tipe gebou te selekteer wat beskou kan word as verteenwoordigend van die geboue waarvoor hierdie belastings van toepassing is, en om die belasting te diskretiseer in die verskeie lasmeganismes wat die opgelegde dakbelasting voortbring. Die waarskynlikheidsmodelle vir die lasmeganismes word dan gekwantifiseer, óf deur fisiese opnames, óf deur die uitvoering van 'n ekspertopname vir daardie veranderlikes wat nie waarneembaar is nie. Die gebruik van ekspert opinie as "n bron van inligting is nie maklik toeganklik in terme daarvan om wetenskaplik verdedigbare resultate te lewer nie. Daarom is die ekspert-opname uitgevoer soos 'n gekalibreerde eksperiment waardeur relatiewe gewigte bereken word vir die individuele eksperts en hulopinies daarvolgens gekombineer word. Die waarskynlikheidsmodelle vir die lasmeganismes word dan omgeskakel in laseffekte deur in agneming van die fisiese proses wat die las-effek voortbring. Deur die lasmeganismes op só 'n manier toe te pas dat die betrokke las-effekte gemaksimeer word, word ekwivalent uniforme belastings (EUS's) bepaal. Die waarskynlikheidsmodelle in terme van EUS's bied "n maklik toeganklike formaat waardeur bestaande lasmodelle en gekodifiseerde voorskrifte evalueer kan word. Die lasmodelle word gevolglik gebruik om die SASS voorskrifte te evalueer in terme van die vlak van betroubaarheid wat gehandhaaf word deur SASS limiet-staat ontwerp kriteria. Dit is bepaal dat die SASS konserwatief voorsiening maak vir onderhoudslaste op die dak, maar onkonserwatief tot hoogs-onkonserwatief is vir konstruksie laste. Die bepaalde lasmodelle kan verder toegepas word in strukturele betroubaarheids analise.
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Werner, Carl Scott. "Cyclic Behavior of Screen Grid Insulated Concrete Form Components." PDXScholar, 2010. https://pdxscholar.library.pdx.edu/open_access_etds/364.

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The principle of sustainability in the built environment has become much more significant in the past decade, resulting in a push to develop building systems that are more energy efficient, durable, and use fewer natural resources. For residential and light commercial buildings, insulated concrete forms (ICF) have enjoyed increasing popularity for their ability to meet these new demands. ICFs are a stay-in-place concrete formwork system for building structural walls that are also highly insulated, among other benefits. Screen-grid ICFs (SGICF) are a small subset of ICFs that tend to use less concrete than standard ICFs and are sometimes made of recycled materials. These traits make SGICFs attractive, but there is a lack of understanding of their structural characteristics due to their irregular internal concrete structure. Because of this, structures using SGICFs are limited to heights no higher than two stories. Further study should show whether SGICFs structures can safely built to greater heights. This investigation studied two types of SGICFs at a component level in order to gain understanding of their lateral force and drift ratio capacities under cyclic loading. Several variables, including steel reinforcement details, the type of concrete, and the presence of the forms, were altered to measure their impact on the performance of the systems. Test results suggested that the ICF formwork increased lateral strength by up to 100% and lateral deformation capacity by up 60% when compared to identical specimens tested with the formwork removed. Results also showed that confinement of the cement, either by mesh hoops, spiral wire, or fiber-reinforced concrete improved the drift ratio at failure up to 500% when compared to specimens with no confinement material. Computer models were created to gauge their ability to replicate the behavior of the experimental test results. The models typically overestimated the lateral load resistance of the samples by 50-100%, and even more in some cases, depending on the reinforcement. The models were not reliable in determining the drift ratio at which the sample was considered to have failed. In some cases the model failed at 50% lower lateral deformations than the test specimen, while in others the model did not fail at all. Future studies should explore refinements of the models to increase their accuracy and usefulness, as well as accounting for the contributions do to the form material. Future studies should also include using spiral wires, mesh hoops, or fiber reinforced concrete in full-scale walls to verify their efficacy in improving overall wall performance.
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Elgazzar, Hesham. "End-Shield Bridges for High-Speed Railway : Full scale dynamic testing and numerical simulations." Licentiate thesis, KTH, Bro- och stålbyggnad, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-204774.

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The increasing need for High-Speed Railway (HSR) to reduce the travelling time requires increasing research within this field. Bridges are main components of any railway network, including HSR networks, and the optimization of their design for this purpose would contribute to a faster and more cost effective development of the HSR network. The initial investment, the running and maintenance costs of the bridges can be decreased through better understanding of the their dynamic behaviour. This thesis studies the dynamic behaviour of end-shield railway bridges under HSR operation. 2D beam analysis is used to study the effect of the distribution of the train’s axle load. Relatively accurate 3D FE-models are developed to study the effect of Soil-Structure Interaction (SSI) and the dynamic response of the bridges. Modelling alternatives are studied to develop an accurate model. A full scale test of a simply supported Bridge with end-shields using load-controlled forced excitation was performed and the results were used to verify the theoretical models. A manual model updating process of the material properties of the 3D FE-model is performed using FRFs from the field measurements. A Simple 2D model is also developed, where a spring/dashpot system is implemented to simplify SSI, and updated to reproduce the field measured responses. The conclusions of the project emphasize the importance of SSI effects in the dynamic analysis of end-shield bridges for predicting their dynamic behaviour. The conclusions also show that the modelling of the surrounding soil and the assumption of the soil material parameters have significant effect on the dynamic response. Even the boundary conditions, bedrock level and the ballast on the railway track affects the response. The results also show that the bridge’s concrete section behaves as uncracked section under the studied dynamic loading.

QC 20170403

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Tarazaga, Pablo Alberto. "Dynamics and Control of a Pressurized Optical Membranes." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/28727.

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Optical membranes are currently pursued for their ability to replace the conventional mirrors that are used to correct wave front aberration and space-based telescopes. Among some of the many benefits of using optical membranes, is their ability to considerably reduce the weight of the structure. As a secondary effect, the cost of transportation, which is of great interest in space applications, is reduced as well. Given the low density of these thin-film membranes, the lower end dynamics play a greater significant role than their rigid plate-like counterparts in achieving functional mirrors. Space-based mirrors are subjected to a series of disturbances. Among those encountered are thermal radiation, debris impact, and slewing maneuvers. Thus, dynamic control is essential for the adequate performance of thin-film membrane mirrors. With this in mind, the work described herein aims to improve the performance of optical membranes with an innovative, acoustical control approach to suppress vibration of optical membranes backed by an air cavity. This is achieved by using a centralized acoustic source in the cavity as the method of actuation. The acoustic actuation is of great interest since it does not mass load the membrane in the conventional way, as most methods of actuation would. To achieve this end goal, two structural-acoustic coupled models are developed to describe the dynamics of a pressurized optical membrane system. This is done through an impedance based modeling approach where the subsystems are modeled individually, and then coupled at the interface. The control of the membrane is implemented using a positive position feedback approach. The theory is also extended to positive velocity and positive acceleration feedback. Three experiments are carried out to validate the models previously mentioned. Successful implementation of a control experiment is also accomplished leading to considerable attenuations in the coupled membraneâ s dynamics.
Ph. D.
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Demharter, Samuel. "Novel applications for hierarchical natural move Monte Carlo simulations : from proteins to nucleic acids." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:c0ef3ba5-4fe0-4684-a0ce-202003cd79a5.

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Biological molecules often undergo large structural changes to perform their function. Computational methods can provide a fine-grained description at the atomistic scale. Without sufficient approximations to accelerate the simulations, however, the time-scale on which functional motions often occur is out of reach for many traditional methods. Natural Move Monte Carlo belongs to a class of methods that were introduced to bridge this gap. I present three novel applications for Natural Move Monte Carlo, two on proteins and one on DNA epigenetics. In the second part of this thesis I introduce a new protocol for the testing of hypotheses regarding the functional motions of biological systems, named customised Natural Move Monte Carlo. Two different case studies are presented aimed at demonstrating the feasibility of customised Natural Move Monte Carlo.
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Garth, John Stuart. "Experimental Investigation of Lateral Cyclic Behavior of Wood-Based Screen-Grid Insulated Concrete Form Walls." PDXScholar, 2014. https://pdxscholar.library.pdx.edu/open_access_etds/1857.

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Insulated concrete forms (ICFs) are green building components that are primarily used for residential wall construction. Unlike most polystyrene based ICF variants, the Faswall ICFs used in these experiments were significantly denser because they were made from recycled wood particles and cement. The current design approach for structures constructed with this type of wall form only allows the designer to consider the contribution of the reinforced concrete cores. Previous research has shown that this approach may be conservative. This project experimentally evaluated the lateral structural response of these types of grid ICF walls under increasing amplitude of in-plane cyclic loading. Two different height-to-length (aspect) ratios (approximately 2:1 and 1:1) were investigated, as was the effect of simultaneous gravity load. Furthermore, the reinforced concrete grid was exposed for each aspect ratio in order to examine the contribution of the ICF blocks to the lateral response. Analyses of hysteretic behaviors and failure modes indicated conservatism in the current design approach for estimating lateral strength and ignoring the beneficial contribution of the ICF blocks to overall performance. The presence of the wall forms increased the lateral shear capacity of the walls by an average of 42% (compared to the walls with forms removed), while also increasing the deformation capacity by an average of 102%. Furthermore, by considering an additional gravity load of 10 kips-per-lineal-foot (klf), the shear resistance of the walls increased by 32% (versus walls only subjected to self-weight), on average, and the deformation capacity of the walls increased by an average of 19%. Comparisons of the experimental results to several design equations led to the recommendation of a design equation that was previously accepted for another type of ICF system.
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Books on the topic "Structural dynamics Testing"

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S, Bursi Oreste, Salençon Jean, Schneider Wilhelm, Schrefler Bernhard, Serafini Paolo, Wagg David, and SpringerLink (Online service), eds. Modern Testing Techniques for Structural Systems: Dynamics and Control. Vienna: Springer Vienna, 2008.

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Modal testing: Theory and practice. Taunton, Somerset, England: Research Studies Press, 1995.

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S, Shin Y., Zukas Jonas A, Levine H. S, Jerome D. M, American Society of Mechanical Engineers. Pressure Vessels and Piping Division., and Pressure Vessels and Piping Conference (1997 : Orlando, Fla.), eds. Structures under extreme loading conditions, 1997: Presented at the 1997 ASME Pressure Vessels and Piping Conference, Orlando, Florida, July 27-31, 1997. New York: American Society of Mechanical Engineers, 1997.

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1965-, Cadoni Ezio, and Di Prisco Marco, eds. Performance, protection and strengthening of structures under extreme loading: Selected, peer reviewed papers of the Third International Workshop on Performance, Protection and Strengthening of Structures under Extreme Loading, PROTECT2011, 30 August - 1 September, 2011, Lugano, Switzerland. Durnten-Zurich: TTP, Trans Tech Publications, 2011.

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Kenchikubutsu no gensui: Damping in buildings. Tōkyō: Nihon Kenchiku Gakkai, 2000.

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United States. National Aeronautics and Space Administration., ed. A determination of the external forces required to move the benchmark active controls testing model in pure plunge and pure pitch. [Washington, DC]: National Aeronautics and Space Administration, 1993.

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Dynamics of pavement structures. London: E & FN Spon, 1994.

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Ebeling, Robert M. Accuracy of response of single-degree-of-freedom systems to ground motion. Vicksburg, Miss: U.S. Army Engineer Waterways Experiment Station, 1997.

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International Measurement Confederation. Technical Committee TC15. Conference. 1st Conference of the Technical Committee (TC15) on measurement of static and dynamic parameters of structures and materials, Plzen, Czechoslovakia, May 26-28, 1987: Proceedings. Edited by Havrilla K. Commack, N.Y: Nova Science Publishers, 1988.

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Allwes, Richard A. Arch canopy verification tests. Washington, D.C: Bureau of Mines, U.S. Dept. of the Interior, 1990.

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Book chapters on the topic "Structural dynamics Testing"

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Black, Jonathan T. "Structural Dynamics." In Testing Large Ultra-Lightweight Spacecraft, 173–210. Reston ,VA: American Institute of Aeronautics and Astronautics, Inc., 2017. http://dx.doi.org/10.2514/5.9781624104657.0173.0210.

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Klingmüller, Oswald. "A dynamic testing method for structural concrete." In Structural Dynamics, 33–37. London: Routledge, 2022. http://dx.doi.org/10.1201/9780203738085-6.

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Lepert, P., and J. L. Briaud. "Dynamic non destructive testing of footing stiffness." In Structural Dynamics, 237–43. London: Routledge, 2022. http://dx.doi.org/10.1201/9780203738085-35.

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Boroschek, Ruben, and Joao Pedro Santos. "Civil Structural Testing." In Handbook of Experimental Structural Dynamics, 1247–341. New York, NY: Springer New York, 2022. http://dx.doi.org/10.1007/978-1-4614-4547-0_29.

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Boroschek, Ruben, and Joao Pedro Santos. "Civil Structural Testing." In Handbook of Experimental Structural Dynamics, 1–95. New York, NY: Springer New York, 2020. http://dx.doi.org/10.1007/978-1-4939-6503-8_29-1.

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Flesch, R. G., W. J. Gerasch, and K. Kernbichler. "The significance of system identification for diagnostic dynamic testing of bridges." In Structural Dynamics, 419–26. London: Routledge, 2022. http://dx.doi.org/10.1201/9780203738085-60.

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Au, Siu-Kui. "Structural Dynamics and Modal Testing." In Operational Modal Analysis, 59–131. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4118-1_3.

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Wolfson, Janet C., Jason R. Foley, Lashaun M. Watkins, Alain L. Beliveau, and Preston C. Gillespie. "Modal Testing of Complex Hardened Structures." In Structural Dynamics, Volume 3, 1481–87. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-9834-7_132.

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Friswell, M. I., and J. E. Mottershead. "Vibration Testing." In Finite Element Model Updating in Structural Dynamics, 36–55. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-015-8508-8_3.

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Hsu, Chiente. "Testing the Structural Model." In Volume and the Nonlinear Dynamics of Stock Returns, 85–101. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-642-45765-4_6.

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Conference papers on the topic "Structural dynamics Testing"

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TASKER, FREDERICK, and INDERJIT CHOPRA. "Assessment of transient testing techniques for rotor stability testing." In 29th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1988. http://dx.doi.org/10.2514/6.1988-2401.

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BENNER, STEVE, and RUSSELL SCHWEICKART. "Compatibility testing with anhydrous ammonia." In 33rd Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1992. http://dx.doi.org/10.2514/6.1992-2299.

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GLASER, R., C. KUO, and B. WADA. "Multiple boundary condition testing error analysis." In 30th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1989. http://dx.doi.org/10.2514/6.1989-1162.

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Hinkle, Karrie, Paul Staszak, and E. Watts. "Advanced ceramic materials development and testing." In 37th Structure, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1996. http://dx.doi.org/10.2514/6.1996-1527.

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GRADY, J., and E. MEYN. "Vibration testing of impact-damaged composite laminates." In 30th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1989. http://dx.doi.org/10.2514/6.1989-1411.

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TREPESS, D., and R. WHITE. "Shock testing using a rapid frequency sweep." In 31st Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1990. http://dx.doi.org/10.2514/6.1990-947.

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LIM, TAE. "Sensor placement for on-orbit modal testing." In 32nd Structures, Structural Dynamics, and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1991. http://dx.doi.org/10.2514/6.1991-1184.

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KIENHOLZ, DAVID, EDWARD CRAWLEY, and T. HARVEY. "Very low frequency suspension systems for dynamic testing." In 30th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1989. http://dx.doi.org/10.2514/6.1989-1194.

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REEDER, JAMES, and JOHN CREWS, JR. "The mixed-mode bending method for delamination testing." In 30th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1989. http://dx.doi.org/10.2514/6.1989-1347.

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HEARN, GEORGE, ROBERT BARRETT, and MICHAEL MCMULLEN. "Analysis and Prototype Testing of a Flexible Rockfall." In 33rd Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1992. http://dx.doi.org/10.2514/6.1992-2533.

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Reports on the topic "Structural dynamics Testing"

1

James, G. H. III. Development of structural health monitoring techniques using dynamics testing. Office of Scientific and Technical Information (OSTI), March 1996. http://dx.doi.org/10.2172/219358.

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Kerber, Steve, and Robin Zevotek. Fire Service Summary Report: Study of Residential Attic Fire Mitigation Tactics and Exterior Fire Spread Hazards on Firefighter Safety. UL Firefighter Safety Research Institute, November 2014. http://dx.doi.org/10.54206/102376/pxtq2256.

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Attic fires pose many hazards for the fire service. When a fire occurs in an attic, it is common it goes unnoticed/reported until smoke or flames are visible from the outside of the structure. Because they take longer to detect, attic fires are more dangerous for firefighters and residents. In a fire situation, the attic ventilation system, which is designed to reduce moisture accumulation by drawing fresh air low from the eaves and exhausting moisture laden warm air near the peak, create an optimal fire growth and spread situation by supplying oxygen to the fire and exhausting hot gases. An estimated 10,000 residential attic fires are reported to U.S. fire departments each year and cause an estimated 30 civilian deaths, 125 civilian injuries and $477 million in property loss. The location of the attic creates several difficulties for the fire service. Firefighters must decide whether to fight the fire from inside the structure, from the outside or a combination of the two. This the decision is complicated by the constant hazard of ceiling collapse, which has the potential to rapidly deteriorate conditions in the living spaces. A piece of gypsum board may fall or be pulled from the ceiling making the relatively clear and cool conditions in the living space change very quickly endangering firefighters executing a search and rescue operation as part of their life safety mission. Further complicating the decision are the hazards associated with roof structure collapse, creating deadly conditions for firefighters operating on and under the roof. Structural collapse accounted for 180 firefighter deaths between 1979 and 2002 of which one-third occurred in residential structures . Many of these incidents involved a roof falling on firefighters or firefighters falling through the roof during firefighting operations on attic fires. The purpose of this study is to increase firefighter safety by providing the fire service with scientific knowledge on the dynamics of attic and exterior fires and the influence of coordinated fire mitigation tactics from full-scale fire testing in realistic residential structures.
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Kerber, Steve, and Robin Zevotek. Study of Residential Attic Fire Mitigation Tactics and Exterior Fire Spread Hazards on Firefighter Safety Released. UL Firefighter Safety Research Institute, November 2014. http://dx.doi.org/10.54206/102376/lihb1439.

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Attic fires pose many hazards for the fire service. When a fire occurs in an attic, it is common it goes unnoticed/reported until smoke or flames are visible from the outside of the structure. Because they take longer to detect, attic fires are more dangerous for firefighters and residents. In a fire situation, the attic ventilation system, which is designed to reduce moisture accumulation by drawing fresh air low from the eaves and exhausting moisture laden warm air near the peak, create an optimal fire growth and spread situation by supplying oxygen to the fire and exhausting hot gases. An estimated 10,000 residential attic fires are reported to U.S. fire departments each year and cause an estimated 30 civilian deaths, 125 civilian injuries and $477 million in property loss. The location of the attic creates several difficulties for the fire service. Firefighters must decide whether to fight the fire from inside the structure, from the outside or a combination of the two. This the decision is complicated by the constant hazard of ceiling collapse, which has the potential to rapidly deteriorate conditions in the living spaces. A piece of gypsum board may fall or be pulled from the ceiling making the relatively clear and cool conditions in the living space change very quickly endangering firefighters executing a search and rescue operation as part of their life safety mission. Further complicating the decision are the hazards associated with roof structure collapse, creating deadly conditions for firefighters operating on and under the roof. Structural collapse accounted for 180 firefighter deaths between 1979 and 2002 of which one-third occurred in residential structures . Many of these incidents involved a roof falling on firefighters or firefighters falling through the roof during firefighting operations on attic fires. The purpose of this study is to increase firefighter safety by providing the fire service with scientific knowledge on the dynamics of attic and exterior fires and the influence of coordinated fire mitigation tactics from full-scale fire testing in realistic residential structures.
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Fowler, Joele Johnston. Analysis of dynamic testing performed on structural clay tile infilled frames. Office of Scientific and Technical Information (OSTI), December 1994. http://dx.doi.org/10.2172/125378.

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Weinschenk, Craig, Keith Stakes, and Robin Zevotek. Impact of Fire Attack Utilizing Interior and Exterior Streams on Firefighter Safety and Occupant Survival: Air Entrainment. UL Firefighter Safety Research Institute, December 2017. http://dx.doi.org/10.54206/102376/gmax3657.

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As research continues into how fire department interventions affect fire dynamics in the modern fire environment, questions continue to arise on the impact and implications of interior versus exterior fire attack on both firefighter safety and occupant survivability. Previous research into various types of fire ground ventilation, flow paths, and exterior fire streams has provided the fire service with an increased understanding of fire dynamics. However, in some instances, the information from the studies did not support current, experience-based practices. This gap between the research to date and the fire ground suppression experience has driven the need for further study. This study will build upon the fire research conducted to date by analyzing how firefighting tactics, specifically different fire suppression tools and tactics, affect the thermal exposure and survivability of both firefighters and building occupants and affect fire behavior in structures. The purpose of this study is to improve firefighter safety, fire ground tactics, and the knowledge of fire dynamics by providing the fire service with scientific information, developed from water flow and full-scale fire testing, in representative single-family homes. This study will build and expand upon the fire research conducted to date by analyzing how firefighting tactics, specifically suppression methods, affect the thermal exposure and survivability of both firefighters and building occupants in addition to impacting fire behavior in structures. The purpose of this study is to improve firefighter safety, fireground tactics, and the knowledge of fire dynamics by providing the fire service with credible scientific information, developed from both water flow and full-scale fire testing, in representative single family homes. The project is comprised of 3 parts: • Part I: Water Distribution • Part II: Air Entrainment • Part III: Full-Scale Residential Fire Experiments This report details the results and analysis from the air entrainment testing. These tests were conducted without the presence of fire to gain a fundamental understanding of how hose streams entrain air. Each set of experiments was intended to add to the understanding of air entrainment and pressure from fire service hose streams by evaluating the differences caused by various application methods, hose stream types, nozzle movements, pressures/flow rates, manufacturers, and ventilation configurations.
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Cady, C. M., S. R. Chen, and G. T. III Gray. Dynamic materials testing and constitutive modeling of structural sheet steel for automotive applications. Final progress report. Office of Scientific and Technical Information (OSTI), August 1996. http://dx.doi.org/10.2172/380343.

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Knox, R., and P. Harcombe. Testing the scale-dependence of models of resource competition and environmental conditions for forest structure and dynamics. Office of Scientific and Technical Information (OSTI), January 1990. http://dx.doi.org/10.2172/7052057.

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Knox, R. G., and P. A. Harcombe. Testing the scale dependence of models of resource competition and environmental conditions for forest structure and dynamics. Final performance report. Office of Scientific and Technical Information (OSTI), December 1995. http://dx.doi.org/10.2172/134999.

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Weinschenk, Craig, Keith Stakes, and Robin Zevotek. Impact of Fire Attack Utilizing Interior and Exterior Streams on Firefighter Safety and Occupant Survival: Water Mapping. UL Firefighter Safety Research Institute, December 2017. http://dx.doi.org/10.54206/102376/nevx1787.

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As research continues into how fire department interventions affect fire dynamics in the modern fire environment; questions continue to arise on the impact and implications of interior versus exterior fire attack on both firefighter safety and occupant survivability. Previous research into various types of fire ground ventilation, flow paths, and exterior fire streams has provided the fire service with an increased understanding of fire dynamics. However, in some instances, the information from the studies may not support current, experienced-based practices. This gap between the research to date and the fire ground suppression experience has driven the need for further study. Therefore, research into the various methods of fire attack will allow a broader understanding of how firefighter interventions on the fire ground can impact the outcome of both life safety and property protection. This study will build upon the fire research conducted to date by analyzing how firefighting tactics, specifically different fire suppression tools and tactics, affect the thermal exposure and survivability of both firefighters and building occupants and affect fire behavior in structures. The purpose of this study is to improve firefighter safety, fireground tactics, and the knowledge of fire dynamics by providing the fire service with scientific information, developed from water flow and full-scale fire testing, in representative single-family homes. The project will be comprised of 3 parts: • Part I: Water Distribution • Part II: Air Entrainment • Part III: Full-Scale Residential Fire Experiments This report details the results and analysis from the water distribution experiments. These tests were conducted without the presence of fire to gain a fundamental understanding of water flows into compartments. Each test was designed to quantify water distribution within a compartment by evaluating the differences caused by various application methods, hose stream types, nozzle movements, pressures/flow rates, stream locations and elevation angles.
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Qamhia, Issam, Erol Tutumluer, and Han Wang. Aggregate Subgrade Improvements Using Quarry By-products: A Field Investigation. Illinois Center for Transportation, June 2021. http://dx.doi.org/10.36501/0197-9191/21-017.

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This report presents a case study for constructing aggregate subgrade improvement (ASI) layers using quarry by-product aggregates (QBA), a quarry mix of large primary crushed rocks (PCR) and sand-sized quarry fines. The construction took place at Larry Power Road in Bourbonnais Township in Kankakee County, Illinois, where the Illinois Department of Transportation placed two QBA mixes. The first mix (QBA_M1) consisted of 45% quarry by-products and 55% railroad ballast–sized 3×1 PCR. The second mix (QBA_M2) consisted of 31% and 69% quarry by-products and PCR, respectively. Two conventional ASI sections were also constructed conforming to Illinois Department of Transportation’s CS02 gradation. All sections consisted of a 9 in. (229 mm) QBA/PCR layer topped with a 3 in. (76 mm) dense-graded capping layer. Laboratory studies preceded the construction to recommend optimum quarry by-product content in the QBA materials and construction practice. The Illinois Center for Transportation research team monitored the quality and uniformity of the construction using nondestructive testing techniques such as dynamic cone penetrometer, lightweight deflectometer, and falling weight deflectometer. The segregation potential was monitored by visual inspection and imaging-based techniques. Short-term field evaluation of the constructed QBA layers, particularly QBA_M2 with a 31% quarry by-product content, showed no evidence of abnormal segregation and did not jeopardize the structural integrity of the QBA ASI layers, which had slightly lower but comparable strength and stiffness profiles to the conventional ASI sections. The use of QBA materials in ASI was field validated as a sustainable construction practice to provide stable pavement foundation layers.
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