Results 71 to 80 of about 18,619 (308)

Modal parameter identification of all-GFRP composite cable-stayed footbridge in Denmark

MATEC Web of Conferences, 2017
The aim of this paper is to investigate of dynamic characteristics of cable-stayed Fiberline Bridge in Kolding, Denmark, made entirely of Glass Fiber Reinforced Polymer (GFRP) composite.
Górski Piotr, Stankiewicz Beata, Tatara Marcin   +2 more
doaj   +1 more source

Failure Identification of Dump Truck Suspension Based on an Average Correlation Stochastic Subspace Identification Algorithm

Applied Sciences, 2018
This paper proposes a fault identification method based on an improved stochastic subspace modal identification algorithm to achieve high-performance fault identification of dump truck suspension.
Bingwen Liu, Zhiyong Ji, Tie Wang, Zhenghao Tang, Guoxing Li   +4 more
doaj   +1 more source

Identification of characteristic parameters of layered structures using modal parameters

Mechanical Engineering Journal
In this study, we present a method for determining parameters that are essential for evaluating the health of layered structures. This method uses modal parameters to identify characteristic parameters that can accurately reproduce the measured modal damping ratio. Specifically, the proposed method uses natural frequencies, natural vibration modes, and
TAJIRI, Daiki, KAWAMURA, Shozo
openaire   +2 more sources

Operational Modal Analysis for Seismic Protection of Structures

, 2008
This thesis focuses on output-only modal identification tests and on the opportunities they provide in the field of seismic protection of structures. The problem of a good measurement process, in order to obtain high quality data and reliable results ...
Rainieri, Carlo
core  

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Modal parameter identification for a roof overflow powerhouse under ambient excitation

Water Science and Engineering, 2016
Modal parameter identification is a core issue in health monitoring and damage detection for hydraulic structures. For a roof overflow hydropower station with a bulb tubular unit under ambient excitation, a complex unit-powerhouse-dam coupling vibration ...
Yan Zhang, Ji-jian Lian, Fang Liu
doaj  

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source

An Application of Global Optimization Algorithm for Modal Parameter Identification

, 1987
Single-mode projection filters for modal parameter identification for flexible structures are introduced. An effective two-dimensional global optimization method using interval analysis is combined with the projection filters to facilitate identification
Chen, Chung-Men
core   +1 more source

Bridge Health Monitoring System based on Vibration Measurements [PDF]

, 2008
info:eu-repo/semantics ...
Perros, Kyriakos K P, Perros, K., Papadimitriou, Costas C P, Ntotsios, E., Evangelos Ntotsios (7175591), Papadimitriou, Costas, Philip C. Perdikaris (7179761), Perdikaris, Filippos, Perdikaris, P., Panetsos, Panagiotis P P, Karaiskos, Grigorios, Perdikaris, Philippos P P, Ntotsios, Evangelos, Panetsos, Panagiotis, Grigorios Karaiskos (7179755), Kyriakos Perros (7179758), Ntotsios, Evaggelos E N, Costas Papadimitriou (99228), Perros, Kyriakos, Panetsos, P., Papadimitriou, C., Karaiskos, G., Panagiotis Panetsos (7176440)   +22 more
core   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source