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Relevant bibliographies by topics / Vibrational Spectra Analysis

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Academic literature on the topic 'Vibrational Spectra Analysis'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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Journal articles on the topic "Vibrational Spectra Analysis"

1

Yormatov, Sh. "CONCENTRATION-DEPENDENT ANALYSIS OF ANILINE VIBRATIONAL MODES USING POLARIZED RAMAN AND GENERALIZED 2D RAMAN CORRELATION SPECTROSCOPY." 2022-yil 3-son (133/1) ANIQ FANLAR SERIYASI 1, no. 1 (2025): 69–75. https://doi.org/10.59251/2181-1296.2025.v1.149.1.3181.

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In this paper, the characteristic vibrational modes of aniline were analyzed using polarized Raman and two dimensional Raman correlation spectroscopy methods. Polarized Raman spectra revealed the presence of anomalous phenomena in the ring-breathing and C-H vibrational modes of aniline. The symmetry and asymmetry vibrational properties of these vibrations were fully manifested in the polarized Raman spectrum. In the case of N-H vibrations, the results that are usually observed were determined. To explain the anomalies observed in the polarized Raman spectra, two-dimensional Raman synchronous a

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Zhang, Xuanjia. "Group Methods for Molecular Vibrational Spectra." Highlights in Science, Engineering and Technology 128 (February 25, 2025): 97–104. https://doi.org/10.54097/2d15d685.

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This article explores the application of group theory to molecular vibrational spectra, a key area of study in physics and chemistry, focusing on retro of early derivations understanding how group theoretical methods can simplify the analysis of molecular vibrations and the corresponding spectroscopic selection rules. It then investigates the use of point group and factor group representations to describe the symmetry properties of molecules and their normal modes of vibration. The methods employed include mathematical formulations based on group theory, such as symmetry operations, representa

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Raja, G., K. Saravanan, and S. Sivakumar. "Molecular and Electronic Structure of 1-Naphtol : Ab Initio Molecular Orbital and Density Functional Study." Applied Mechanics and Materials 110-116 (October 2011): 1862–69. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.1862.

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The molecular vibrations of 1-Naphtol were investigated in polycrystalline sample, at room temperature, by FT- IR and FT-Raman spectroscopy. In parallel, ab initio and various density functional (DFT) methods were used to determine the geometrical, energetic and vibrational characteristics of 1-Naphtol . On the basis of B3LYP/6-31G* and B3LYP/6-311+G** methods and basis set combinations, a xnormal mode analysis was performed to assign the various fundamental frequencies according to the total energy distribution (TED). The vibrational spectra were interpreted, with the aid of normal coordinate

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Admin, Ragamathunnisa M., Megela R, and Jasmine Vasantha Rani E. "Molecular structure, vibrational spectroscopic studies and nonlinear optical analysis of Thiacetazone." JOURNAL OF ADVANCED APPLIED SCIENTIFIC RESEARCH 1, no. 1 (2015): 10–18. http://dx.doi.org/10.46947/joaasr1120159.

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The optimum molecular geometry of 1-(1,3-Benzodioxol-5-yl)thiourea was calculated by the B3LYP method of density functional theory (DFT) using 6-311 + + G(d,p), mp2/sto-3g basis sets and data source of vibration frequency, polarizability, and thermo-dynamical parameters were set up. By contrast with the theoretical spectra, the vibrational assignment of 1-(1, 3-Benzodioxol-5-yl)thiourea was discussed. In addition, part of significant parameters such as HOMO-LUMO energy gap and hyperpolarizability calculations. This study provides a theoretical support for the spectral detection technology, esp

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Guo, Wei, Zulin Zhu, Xiaolin Liu, et al. "Time-dependent band position difference between vibrational sum and difference frequency generation: a phenomenon originating from dispersion in the visible pulse." Optics Express 31, no. 5 (2023): 8325. http://dx.doi.org/10.1364/oe.481760.

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Vibrational spectroscopy is significant for identifying chemical specification. Here, the spectral band frequencies corresponding to the same molecular vibration in sum frequency generation (SFG) and difference frequency generation (DFG) spectra present delay-dependent deviation. Through numerical analysis of time resolved SFG and DFG spectra with a frequency marker in the incident IR pulse, the frequency ambiguity was not caused by any structure and dynamic variation on the surface, but from the dispersion in the incident visible pulse. Our results provide a helpful method to correct the vibr

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GOPINATH, A. BINDU, and S. DEVANARAYANAN. "FT RAMAN AND FTIR SPECTRA OF FOUR DISELENITES PbSe2O5, CdSe2O5, MnSe2O5 and Cr2(Se2O5)3." International Journal of Modern Physics B 13, no. 20 (1999): 2645–50. http://dx.doi.org/10.1142/s0217979299002575.

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The vibrational spectra of Lead diselenite, Cadmium diselenite, Manganese diselenite and chromium diselenite have been recorded and analysed on the basis of vibrations due to [Formula: see text] ion. The observed spectra clearly indicate the presence of diselenite group in all these compounds. The spectral analysis confirms the orthorhombic nature of MnSe 2 O 5 as suggested by Koskenlinna et al. A large number of vibrational bands in the symmetric stretching region of PhSe 2 O 5 is due to the existence of different Se-O bond lengths. From the spectra it can be seen that the anion is highly dis

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McNavage, William, William Dailey та Hai-Lung Dai. "The ν1 and ν2 vibrational bands of the OCCN radical detected through time-resolved Fourier transform IR emission spectroscopy". Canadian Journal of Chemistry 82, № 6 (2004): 925–33. http://dx.doi.org/10.1139/v04-041.

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Through monitoring the IR emission from vibrationally excited radicals generated by exothermic photolysis reactions, the CN stretch (ν1) and the CO stretch (ν2) vibrational bands of the cyanooxomethyl radical (OCCN) have been observed for the first time at 2093 cm1 and 1774 cm1, respectively. The OCCN radical was produced through 193 nm photolysis of methyl cyanoformate (NCC(O)OCH3), carbonyl cyanide (NCC(O)CN), and pivaloyl cyanide (NCC(O)C(CH3)3). The IR emission spectra were recorded by using nanosecond time-resolved Fourier transform IR emission spectroscopy. Assignments of the spectral

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Yi, Jun, En-Ming You, Song-Yuan Ding, and Zhong-Qun Tian. "Unveiling the molecule–plasmon interactions in surface-enhanced infrared absorption spectroscopy." National Science Review 7, no. 7 (2020): 1228–38. http://dx.doi.org/10.1093/nsr/nwaa054.

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Abstract Nanostructure-based surface-enhanced infrared absorption (SEIRA) spectroscopy has attracted tremendous interest as an ultrasensitive detection tool that supplies chemical-fingerprint information. The interactions between molecular vibrations and plasmons lead to not only the enhancement of spectral intensity, but also the distortion of spectral Lorentzian lineshapes into asymmetric Fano-type or more complicated lineshapes in the SEIRA spectra; this effect hampers the correct readout of vibrational frequencies and intensities for an accurate interpretation of the measured spectra and q

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Luce, Robert, Peter Hildebrandt, Uwe Kuhlmann, and Jörg Liesen. "Using Separable Nonnegative Matrix Factorization Techniques for the Analysis of Time-Resolved Raman Spectra." Applied Spectroscopy 70, no. 9 (2016): 1464–75. http://dx.doi.org/10.1177/0003702816662600.

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The key challenge of time-resolved Raman spectroscopy is the identification of the constituent species and the analysis of the kinetics of the underlying reaction network. In this work we present an integral approach that allows for determining both the component spectra and the rate constants simultaneously from a series of vibrational spectra. It is based on an algorithm for nonnegative matrix factorization that is applied to the experimental data set following a few pre-processing steps. As a prerequisite for physically unambiguous solutions, each component spectrum must include one vibrati

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Barik, Bijay Kumar, Madhukar Mallya H., Rajeev K. Sinha, and Santhosh Chidangi. "Structure and Spectroscopic Studies of Aloe-emodin and Chrysophanol using Density Functional Theory and Experimental Methods-=SUP=-*-=/SUP=-." Оптика и спектроскопия 130, no. 6 (2022): 825. http://dx.doi.org/10.21883/os.2022.06.52621.39-22.

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The experimental and theoretical spectra studies of Aloe-emodin and Chrysophanol are reported in this work. Experimentally the Fourier transform infrared, Raman, and UV-Visible spectra were recorded for Aloe-emodin and Chrysophanol. With the help of density functional theory and B3LYP, the functional triple zeta basis set def-TZVP was used to optimize structures and calculate the vibrational frequencies. It was found out that the conformations of Aloe-emodin and Chrysophanol with the double intramolecular hydrogen bonds between the OH and C=O groups were the most stable conformations among the

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Dissertations / Theses on the topic "Vibrational Spectra Analysis"

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Hirai, Kazuo. "Time-energy analysis of molecular vibrational spectra /." Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/8518.

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Harvey, Pierre Dominique. "Applications of vibrational spectroscopy and NMR spin-lattice relaxation time measurements to organometallic and organic molecular crystals." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=73986.

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Panizza, M. P. "Analysis of complex integral photoelectron spectra /." Title page, contents and introduction only, 1985. http://web4.library.adelaide.edu.au/theses/09SM/09smp193.pdf.

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Medina, Gerardo Juan. "Ligand isotope vibrational spectroscopic and DFT studies of Pt(II) and Cu(I) complexes." Thesis, Rhodes University, 2005. http://hdl.handle.net/10962/d1004982.

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Ligand-isotope labelling studies were performed on Zeise’s salt derivatives with pyridine N-oxide and quinoline N-oxide, their perdeuterated and O-18 isotopomers, C₂D₄ and ¹³CO, and the results of the vibrational analyses are reported. The isotopomers are modelled utilizing DFT calculations at the B3LYP level with the 6-31 G** basis set, and a pseudopotential level for the Pt atom. The calculated and observed structure and vibrational spectra correlate well. The crystal structures of [Pt(C₂2H₄)(pyO)Cl₂] and [Pt(CO)(quinO)Br₂] are reported. The frequency for the νPt-O vibration, ambiguously ass

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Watkins, Gareth Mostyn. "Ligand isotope vibrational studies of metal(II) complexes with particular reference to heterocyclic N-oxides." Doctoral thesis, University of Cape Town, 1987. http://hdl.handle.net/11427/17042.

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Includes bibliographical references.<br>A critical examination of the characteristic N-O vibrational frequencies of aromatic N-oxides questions the widely held assignment of αN-O (840cm⁻¹) and YN-O (47oon- 1). The present investigation supports the assignments of αN-O (470cm⁻¹) and γN-O (280cm⁻¹), with the assignment of the band at 840cm⁻¹ as being vring coupled with νN-O.

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Atter, Glenn David. "The study and refinement of vibrational force fields using optical and inelastic neutron scattering spectra." Thesis, University of York, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319456.

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Zamotaeva, Valeriya. "High-resolution FTIR spectra analysis of sulfur dioxide isotopologues." Thesis, Bourgogne Franche-Comté, 2019. http://www.theses.fr/2019UBFCK053.

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Dans cette thèse, nous avons examiné les propriétés spectrales de l’anhydride sulfureux. Les spectres FTIR expérimentaux de nombreux isotopologues du dioxyde de soufre, 32S16O2, 34S16O2, 32S18O2 et 32S16O18O, ont été enregistrés pour la première fois dans les régions des bandes fondamentales, «chaudes», harmoniques et de combinaison. La grande variabilité des conditions expérimentales a permis d’observer et d’identifier pour la première fois des transitions appartenant aux ban¬des ro-vibrationnelles suivantes : 3v2, 3v2 - v2, 2v2 - v2 bandes de 32S16O2 ; 2v2 - v2 bande de 34S16O2 ; v1 + v2, v2

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Wilcox, Kieaibi. "Using regression analyses for the determination of protein structure from FTIR spectra." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/using-regression-analyses-for-the-determination-of-protein-structure-from-ftir-spectra(1ad037eb-f237-4efe-867a-597239bd913e).html.

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One of the challenges in the structural biological community is processing the wealth of protein data being produced today; therefore, the use of computational tools has been incorporated to speed up and help understand the structures of proteins, hence the functions of proteins. In this thesis, protein structure investigations were made through the use of Multivariate Analysis (MVA), and Fourier Transformed Infrared (FTIR), a form of vibrational spectroscopy. FTIR has been shown to identify the chemical bonds in a protein in solution and it is rapid and easy to use; the spectra produced from

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Pan, Chunhua Durig James R. "Raman and infrared spectra, conformational stability, normal coordinate analysis, vibrational assignment and ab initio calculations of some silicon or germanium containing compounds." Diss., UMK access, 2005.

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Thesis (Ph. D.)--Dept. of Chemistry and School of Computing and Engineering. University of Missouri--Kansas City, 2005.<br>"A dissertation in chemistry and computer networking." Advisor: James R. Durig. Typescript. Vita. Description based on contents viewed Nov. 21, 2007; title from "catalog record" of the print edition. Includes bibliographical references (leaves 415-424). Online version of the print edition.

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Morrell, Claire. "FTIR emission studies of chemical processes." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326026.

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Books on the topic "Vibrational Spectra Analysis"

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Haris, P. I., and Feride Severcan. Vibrational spectroscopy in diagnosis and screening. IOS Press, 2012.

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Goldman, Steve. Vibration spectrum analysis: A practical approach. 2nd ed. Industrial Press, 1999.

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Griffiths, Peter R. Applications of vibrational spectroscopy in food science. Wiley, 2011.

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Diem, Max. Modern vibrational spectroscopy and micro-spectroscopy: Theory, instrumentation, and biomedical applications. John Wiley & Sons, Inc., 2015.

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5

Bukowska, Jolanta. Spektroskopia oscylacyjna roztworów amidowych. Wydawnictwa Uniwersytetu Warszawskiego, 1986.

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6

Stephen, Braiman Mark, and Gregoriou Vasilis G, eds. Vibrational spectroscopy of biological and polymeric materials. Taylor & Francis, 2005.

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7

Larson, Harold J. Classification trees and the analysis of helicopter vibration data. Naval Postgraduate School, 1997.

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1952-, Bernhard Robert, and United States. National Aeronautics and Space Administration., eds. Vibrational power flow analysis of rods and beams. Purdue University, 1988.

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9

Hanson, David R. Rock stability analysis using acoustic spectroscopy. U.S. Dept. of the Interior, Bureau of Mines, 1985.

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10

Dale, Christesen Steven, Sedlacek Arthur J, and Society of Photo-optical Instrumentation Engineers., eds. Vibrational spectroscopy-based sensor systems: 1-2 November 2001, Newton, [Mass.], USA. SPIE, 2002.

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Book chapters on the topic "Vibrational Spectra Analysis"

1

Hernanz, Antonio, Ferenc Billes, Ioan Bratu, and Raquel Navarro. "Vibrational analysis and spectra of orotic acid." In Spectroscopy of Biological Molecules: New Directions. Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4479-7_101.

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García-Ramos, J. V., A. Ben Altabef, L. E. Camafeita, and S. Sánchez-Cortés. "Vibrational Spectra and Normal Coordinate Analysis of 1,5-Dimethylcytosine." In Fifth International Conference on the Spectroscopy of Biological Molecules. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1934-4_5.

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Kirillova, S. G., V. M. Andrianov, L. K. Prikhodchenko, T. E. Kolosova, and R. G. Zhbankov. "Vibrational spectra of epoxysaccharides. Normal mode analysis of different conformers." In Spectroscopy of Biological Molecules: New Directions. Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4479-7_145.

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Lefrant, S., and J. P. Buisson. "Theoretical Analysis of the Vibrational Spectra of Conducting Polymers : A Model Compound Approach." In Frontiers of Polymers and Advanced Materials. Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2447-2_26.

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Ishioka, T., Y. Shibata, M. Takahashi, and I. Kanesaka. "Vibrational Spectra and Structure of Zn Soaps I. Normal Mode Analysis of Zinc Acetate Dihydrate." In Spectroscopy of Biological Molecules: Modern Trends. Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5622-6_274.

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Ishioka, T., Y. Shibata, M. Takahashi, and I. Kanesaka. "Vibrational Spectra and Structure of Zn Soaps II. Normal Mode Analysis of Zinc Acetate Anhydride." In Spectroscopy of Biological Molecules: Modern Trends. Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5622-6_275.

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Tavan, Paul. "Quantum Chemical Normal Mode Analysis for Interpretation of Vibrational Spectra of Biomolecules: State of the Art." In Spectroscopy of Biological Molecules. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0371-8_1.

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Feng, Wenzong, Qing Zhang, Zhuoxiang Chen, Jianqun Zhang, and Haoyu Wang. "Dynamical Simulation Analysis of Faulty Gearbox in Quay Crane Under Dynamic Load." In Lecture Notes in Mechanical Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-1876-4_15.

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AbstractDynamics simulations with faults can elucidate fault vibration characteristics, yet the vibrational properties of the quay crane lifting gearboxes under dynamic load excitation remain unclear. Based on multi-body dynamics theory, a multi-body dynamical model of the quay crane gearbox is established, simulating dynamic load excitation caused by cables and containers during the operation of a quay crane. The vibration responses under various working conditions and load types of different gear states are analyzed, and the corresponding fault frequency features are extracted by envelope sp

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Wang, Xiangxiang, Hongsheng Zhang, and Wenwu Liu. "Study on Wind-Induced Response and Wind Vibration Coefficient of Tower Crane Under Different Wind Speed Spectra Excitation." In Lecture Notes in Mechanical Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-1876-4_60.

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AbstractThe wind-induced response and wind vibration coefficient of tower cranes under different wind speed spectra and wind direction angles are investigated to reveal the influence of wind speed distribution on the wind vibration characteristics of tower cranes. Firstly, the theoretical formula for the wind vibration coefficient based on random vibration theory is derived. Then, the APDL modeling method establishes a parametric finite element analysis model with the QTZ25 tower crane as a research object, and wind speed time history at various heights is simulated using the harmonic synthesi

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Wang, Yingguang. "Spectral Analysis of Random Processes." In Random Vibrations. CRC Press, 2024. https://doi.org/10.1201/9781003431503-4.

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Conference papers on the topic "Vibrational Spectra Analysis"

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Kosacki, Igor, and Sridhar Srinivasan. "Application of Raman Spectroscopy for Hydrocarbon Characterization." In CORROSION 2017. NACE International, 2017. https://doi.org/10.5006/c2017-09145.

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Abstract The application of Raman spectroscopy for hydrocarbon speciation is described and recent advances in real time monitoring have been highlighted. The vibrational properties of hydrocarbon molecules were modeled using Density Function Theory and results were correlated with Raman spectra. The influence of pressure and temperature on Raman modes was described. The speciation of gas mixtures containing C1 – C4 hydrocarbons and concentration of vapor phase components were derived from Raman spectra analysis. Calibration curves showing the dependence of Raman line intensities as a function

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Coats, David, Mohammed Hassan, and Abdel Bayoumi. "Condition Monitoring of Helicopter Drivetrain Components Using Bispectral Analysis." In Vertical Flight Society 70th Annual Forum & Technology Display. The Vertical Flight Society, 2014. http://dx.doi.org/10.4050/f-0070-2014-9529.

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In this paper, bispectral analysis of vibration signals is used to assess health conditions of different rotating-components in an AH-64D helicopter tail rotor drive train. First, cross-bispectral analysis is used to investigate drive-shaft faulted conditions -- namely misalignment, imbalance, and a combination of misalignment and imbalance -- with respect to a baseline case. The magnitude of the cross-bispectrum shows high sensitivity to abnormalities in the drive shaft, and phase information can be used to distinguish between different shaft conditions. Auto-bispectral analysis is used to st

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Chao, Xing, Zihao Song, Ning Zhu, and Weitian Wang. "Infrared Laser Spectroscopy for Reactive Flow Sensing." In Laser Applications to Chemical, Security and Environmental Analysis. Optica Publishing Group, 2024. https://doi.org/10.1364/lacsea.2024.lm2d.1.

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Infrared laser spectroscopy enables fast, in-situ, and quantitative gas sensing. We report our recent advancements in investigation of molecular vibrational energy transfers, high-resolution spectroscopy methods, and efficient spectral signal processing technologies, targeting reactive flow sensing.

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Elmore, Douglas L. "Multivariate Analysis of Vibrational Spectra in Industrial Research." In Applied Industrial Optics: Spectroscopy, Imaging and Metrology. OSA, 2014. http://dx.doi.org/10.1364/aio.2014.ath2a.1.

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Elkin, P. M., M. A. Erman, and O. V. Pulin. "Anharmonic analysis of vibrational spectra of substituted uracil." In SPIE Proceedings, edited by Vladimir L. Derbov, Leonid A. Melnikov, and Lev M. Babkov. SPIE, 2006. http://dx.doi.org/10.1117/12.696923.

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Lucht, Robert P., and Mark A. Maris. "Simultaneous Acquisition of Pure Rotational and Vibrational Nitrogen Spectra Using Three-Laser Cars." In Laser Applications to Chemical Analysis. Optica Publishing Group, 1987. http://dx.doi.org/10.1364/laca.1987.mb2.

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We have used three-laser coherent anti-Stokes Raman scattering to acquire simultaneously the pure rotational and vibrational spectra from the nitrogen molecule. The energy level schematic for the three-laser CARS process is shown in Figure 1. Frequency-doubled Nd:YAG laser radiation at frequency ω1 is used to pump a broadband dye laser which lases at a range of frequencies ω s and a narrowband dye laser with frequency ω2. The three-beams are focused to a common CARS probe volume using a three-dimensional phase-matching geometry.

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Makarewicz, Jan. "Effective Hamiltonians in calculations and analysis of the vibrational spectra." In Omsk - DL tentative, edited by Leonid N. Sinitsa. SPIE, 1992. http://dx.doi.org/10.1117/12.131130.

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Prasannakumar, Sushanti, Jayashree Yenagi, J. Tonannavar, V. K. Vaidyan, and V. S. Jayakumar. "Vibrational Spectra, Assignments and Ab initio∕DFT Analysis for 2-Methyl-3-nitrophenyl isocyanate." In PERSPECTIVES IN VIBRATIONAL SPECTROSCOPY: Proceedings of the 2nd International Conference on Perspectives in Vibrational Spectroscopy (ICOPVS 2008). AIP, 2008. http://dx.doi.org/10.1063/1.3046184.

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Wang, Xiu-zhen, Roger D. Soloway, Jin-guang Wu, Bao-zhu Yu та Guang-xian Xu. "FT-IR Spectra And Normal Vibrational Analysis Of Bilirubin IX α". У Intl Conf on Fourier and Computerized Infrared Spectroscopy, редактор David G. Cameron. SPIE, 1989. http://dx.doi.org/10.1117/12.969391.

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Stamp, C., R. D. G. Prasad, P. G. Gillard, and S. Paddi Reddy. "Analysis of the collision-induced absorption spectra of double vibrational transitions in H2−N2." In The 14th international conference on spectral line shapes. American Institute of Physics, 1999. http://dx.doi.org/10.1063/1.58384.

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Reports on the topic "Vibrational Spectra Analysis"

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Korzeniewski, C., B. S. Pons, P. P. Schmidt, and M. W. Severson. An analysis of the Vibrational Spectrum of Carbon Monoxide on Platinum Metal Electrodes. Defense Technical Information Center, 1986. http://dx.doi.org/10.21236/ada173366.

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Mazzoni, Silvia, Nicholas Gregor, Linda Al Atik, Yousef Bozorgnia, David Welch, and Gregory Deierlein. Probabilistic Seismic Hazard Analysis and Selecting and Scaling of Ground-Motion Records (PEER-CEA Project). Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, 2020. http://dx.doi.org/10.55461/zjdn7385.

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This report is one of a series of reports documenting the methods and findings of a multi-year, multi-disciplinary project coordinated by the Pacific Earthquake Engineering Research Center (PEER) and funded by the California Earthquake Authority (CEA). The overall project is titled “Quantifying the Performance of Retrofit of Cripple Walls and Sill Anchorage in Single-Family Wood-Frame Buildings,” henceforth referred to as the “PEER–CEA Project.” The overall objective of the PEER–CEA Project is to provide scientifically based information (e.g., testing, analysis, and resulting loss models) that

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Perret, D., B. Dietiker, J. P. Gravel, T. Fournier, and A. J. M. Pugin. Ambient micro-vibration measurements in geotechnical engineering: a practical approach to the HVSR method. Natural Resources Canada/CMSS/Information Management, 2024. http://dx.doi.org/10.4095/p6qwj6n6fj.

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Depuis les dix dernières années, la communauté géotechnique s’intéresse de plus en plus à une technique géophysique basée sur l'analyse du bruit ambiant enregistré à l’aide d’un sismomètre à trois composantes à la surface du sol. Le but de cette technique est de calculer le rapport des spectres d'amplitude de Fourier des composantes horizontale et verticale de l'enregistrement, communément appelé HVSR. (Horizontal to Vertical Spectral Ratio). Lorsque le contraste de vitesse de l'onde de cisaillement entre le substratum rocheux, ou un till dense, et le sol au-dessus est suffisamment élevé, la c

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Christe, Karl O., Xiongzhi Zhang, Jeffrey A. Sheehy, and Robert Bau. Crystal Structure of CIF4+SbF6-, Normal Coordinate Analyses of CIF4+ BrF4+, IF4+, SF4, SeF4, and TeF4, and Simple Method for Calculating the Effects of Fluorine Bridging on the Structure and Vibrational Spectra of Ions in a Strongly Interacting Ionic Solid. Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada408568.

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POWER FLOW ANALYSIS OF BRIDGE U-RIB STIFFENED PLATES BASED ON THE CONCEPT OF STRUCTURAL INTENSITY. The Hong Kong Institute of Steel Construction, 2022. http://dx.doi.org/10.18057/icass2020.p.061.

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Due to its advantages of good mechanical properties, simple appearance and strong adaptability, the steel box girder is being widely utilized in urban bridges. The noise radiated by steel box girders subjected to vehicle impacts has the characteristics of wide-spectrum, high-magnitude and control difficulty. U-rib stiffened roof, as a part of the steel box girder, directly bears the input load, which is the basis of studying the vibration of the steel box girder. Currently, the investigation on the vibro-acoustic performance of U-rib plates is very limited. With this regard, this paper introdu

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DEEP LEARNING DAMAGE IDENTIFICATION METHOD FOR STEEL- FRAME BRACING STRUCTURES USING TIME–FREQUENCY ANALYSIS AND CONVOLUTIONAL NEURAL NETWORKS. The Hong Kong Institute of Steel Construction, 2023. http://dx.doi.org/10.18057/ijasc.2023.19.4.8.

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Lattice bracing, commonly used in steel construction systems, is vulnerable to damage and failure when subjected to horizontal seismic pressure. To identify damage, manual examination is the conventional method applied. However, this approach is time-consuming and typically unable to detect damage in its early stage. Determining the exact location of damage has been problematic for researchers. Nevertheless, detecting the failure of lateral supports in various parts of a structure using time–frequency analysis and deep learning methods, such as convolutional neural networks, is possible. Then,

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Tire Experimental Characterization Using Contactless Measurement Methods. SAE International, 2021. http://dx.doi.org/10.4271/2021-01-1114.

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In the frame of automotive Noise Vibration and Harshness (NVH) evaluation, inner cabin noise is among the most important indicators. The main noise contributors can be identified in engine, suspensions, tires, powertrain, brake system, etc. With the advent of E-vehicles and the consequent absence of the Internal Combustion Engine (ICE), tire/road noise has gained more importance, particularly at mid-speed driving and in the spectrum up to 300 Hz. At the state of the art, the identification and characterization of Noise and Vibration sources rely on pointwise sensors (microphones, accelerometer

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