46116
2018
eng
23
24
conferenceobject
PRINTECH
Bukarest
0
--
--
--
A small-scale test bridge for measurement- and model-based structural analysis
To examine the capability to detect and localise damage using the Measurement- and Model-based Structural Analysis (MeMoS), a small-scale truss bridge (1520 mm × 720 mm × 720 mm) made of aluminium profiles is built as a test specimen for this purpose. The truss frame of the test bridge is made of aluminium profiles with a sophisticated design of the cross-sectional area. In comparison, with solid profiles, only a fraction of the material is needed to produce the profiles, while their bending resistance decreases slightly. The profiles are built into a truss frame by connecting them by means of fastening sets made of steel. The bridge model is mounted on four steel bearings which each of them consist of a cylinder arranged between two plates. Fixed bearings are made by holding onto one end of the bridge. The bridge is subjected by an external load by placing a heavy object beneath it. At the same time, measurements can be conducted below the bridge. Therefore, the bridge specimen is elevated by attaching it on a pedestal with four columns. Damages can be induced by loosening the fastening pieces.
35TH DANUBIA ADRIA SYMPOSIUM ON ADVANCES IN EXPERIMENTAL MECHANICS Extended abstracts
978-606-23-0874-2
35th Danubia-Adria Symposium on Advances in Experimental Mechanics
Sinaia, Romania
25.09.2018
28.09.2018
Cheng-Chieh Wu
Daniel Kadoke
Michael Fischer
Harald Kohlhoff
S. Weisbrich
F. Neitzel
eng
uncontrolled
Adjustment calculation
eng
uncontrolled
Finite element method
eng
uncontrolled
Damage detection and localisation
eng
uncontrolled
Structural analysis
eng
uncontrolled
Photogrammetry
Ingenieurbau
8 Zerstörungsfreie Prüfung
8.1 Sensorik, mess- und prüftechnische Verfahren
Infrastruktur
Sicherheit und Lebensdauer von Bauwerken
Volltext-PDF im Netzwerk der BAM verfügbar ("Closed Access")
Graue Literatur
46113
2018
eng
poster
0
--
--
--
A small-scale test bridge for measurement- and model-based structural analysis
To examine the capability to detect and localise damage using the Measurement- and Model-based Structural Analysis (MeMoS), a small-scale truss bridge (1520 mm × 720 mm × 720 mm) made of aluminium profiles is built as a test specimen for this purpose. The truss frame of the test bridge is made of aluminium profiles with a sophisticated design of the cross-sectional area. In comparison, with solid profiles, only a fraction of the material is needed to produce the profiles, while their bending resistance decreases slightly. The profiles are built into a truss frame by connecting them by means of fastening sets made of steel. The bridge model is mounted on four steel bearings which each of them consist of a cylinder arranged between two plates. Fixed bearings are made by holding onto one end of the bridge. The bridge is subjected by an external load by placing a heavy object beneath it. At the same time, measurements can be conducted below the bridge. Therefore, the bridge specimen is elevated by attaching it on a pedestal with four columns. Damages can be induced by loosening the
fastening pieces.
35th Danubia-Adria Symposium on Advances in Experimental Mechanics
Sinaia, Romania
25.09.2018
28.09.2018
Cheng-Chieh Wu
eng
uncontrolled
Adjustment calculation
eng
uncontrolled
Finite element method
eng
uncontrolled
Damage detection and localisation
eng
uncontrolled
Structural analysis
eng
uncontrolled
Photogrammetry
Ingenieurbau
8 Zerstörungsfreie Prüfung
8.1 Sensorik, mess- und prüftechnische Verfahren
Infrastruktur
Sicherheit und Lebensdauer von Bauwerken
Volltext-PDF im Netzwerk der BAM verfügbar ("Closed Access")
Präsentation
32736
2015
eng
141
156
bookpartcollection
Springer
1
--
--
--
Advances in structural monitoring by an integrated analysis of sensor measurements and 3D building model
The use of open GIS standards offers a broad variety of potential, particularly in the field of data exchange, data storage, and interoperability. GML and CityGML are excellent examples for the ontological description of real world objects by means of an open standard whereas SensorML serves to describe measurements, sensors and measuring platforms. The use of such standards offers not only the possibility of using a common standardised language, but also the use of open service standards. The combination of spatial data and sensor standards in services and service-oriented architectures goes far beyond previous existing solutions on the market and provides a novel platform for monitoring structures. That in fact is far more than a simple data storage model. The methods and models presented in this contribution allow a direct integration of sensor data and its provision through an open standard language. In this case, all the intermediate steps at any time through an open service interface are addressed and may be made available and provided to different actors and stakeholders participating in a construction scenario. The great potential and the added value of such an information system is the permanent availability of measurement and object data and an associated integrated analysis of sensor data in combination with a finite element model (FEM). The automatic derivation of a finite element model from the 3D structure model, the visualisation of FEM, the provision of raw (measurement) data and sensor information for each time of measurement transform the platform into a universal tool in the field of structural monitoring. This contribution introduces the individual components, the standards used and the interaction between the components to an overall system.
3D Geoinformation science - The selected papers of the 3D GeoInfo 2014
35812
978-3-319-12180-2
978-3-319-12181-9
10.1007/978-3-319-12181-9_9
1863-2246
1863-2351
https://apps.webofknowledge.com/full_record.do?product=UA&search_mode=GeneralSearch&qid=1&SID=T15HUy2zdMWxKdtryMi&page=1&doc=1
Serientitel: Lecture notes in geoinformation and cartography (LNG&C) – Series title: Lecture notes in geoinformation and cartography (LNG&C)
10.11.2017
T. Becker
S. Weisbrich
Cheng-Chieh Wu
F. Neitzel
eng
uncontrolled
Structural monitoring
eng
uncontrolled
SensorML
eng
uncontrolled
Finite element method
eng
uncontrolled
Integrated analysis
eng
uncontrolled
City model
eng
uncontrolled
Building model
8 Zerstörungsfreie Prüfung
8.1 Sensorik, mess- und prüftechnische Verfahren
Verlagsliteratur
Volltext-PDF im Netzwerk der BAM verfügbar ("Closed Access")
32045
2014
deu
lecture
0
--
--
--
Advances in Structural Monitoring by an Integrated Analysis of Sensor Measurements and 3D Building Model
9th International 3DGeoInfo 2014
35105
9th International 3DGeoInfo 2014
Dubai, United Arab Emirates
2014-11-11
2014-11-13
Cheng-Chieh Wu
8 Zerstörungsfreie Prüfung
8.1 Sensorik, mess- und prüftechnische Verfahren
Weder Volltext-PDF noch papiergebundenes Belegexemplar vorhanden ("No Access")
Präsentation
34333
2016
eng
1221
1246
5
28
article
Springer
Berlin
1
--
--
--
An energy-based method to determine material constants in nonlinear rheology with applications
Many polymer-type materials show a rate-dependent and nonlinear rheological behavior. Such a response may be modeled by using a series of spring-dashpot systems. However, in order to cover different time scales the number of systems may become unreasonably large. A more appropriate treatment based on continuum mechanics will be presented herein. This approach uses representation theorems for deriving material equations and allows for a systematic increase in modeling complexity. Moreover, we propose an approach based on energy to determine thematerial parameters.This method results in a simple linear regression problemeven for highly nonlinearmaterial equations. Therefore, the inverse problem leads to a unique solution. The significance of the proposed method is that the stored and dissipated energies necessary for the procedure are measurable quantities. We apply the proposed method to a 'semi-solid' material and measure its material parameters by using a simple-shear rheometer.
Continuum mechanics and thermodynamics
37464
10.1007/s00161-015-0472-z
0935-1175
1432-0959
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS&DestLinkType=FullRecord;UT=WOS:000382016900001
05.10.2015
B. E. Abali
Cheng-Chieh Wu
W.H. Müller
eng
uncontrolled
Material equations
eng
uncontrolled
Constitutive relations
eng
uncontrolled
Nonlinear rheology
eng
uncontrolled
Simple-shear rheometer
eng
uncontrolled
Inverse analysis
Analytische Chemie
8 Zerstörungsfreie Prüfung
8.1 Sensorik, mess- und prüftechnische Verfahren
Analytical Sciences
Sensorik
Verlagsliteratur
Volltext-PDF im Netzwerk der BAM verfügbar ("Closed Access")
42794
2017
eng
5995
6000
5, Part 1
4
article
Elsevier
Amsterdam, Netherlands
1
--
--
--
Approximate model for geometrical complex structures
Many engineering structures are nowadays made of composite materials or metal foam. These modern engineering materials contain very complex inner geometry. To simulate the deformational behaviour of these structures often requires a high number of discretisation elements. This in turn yields a very large system of linear equations that are extremely time and memory consuming or practically impossible to solve. It is therefore desirable to find an approach to overcome this obstacle. In this paper a numerical method is proposed to find an approximate substitute model for geometrical complex structures.
Materials Today: Proceedings
10.1016/j.matpr.2017.06.084
http://www.sciencedirect.com/science/article/pii/S2214785317308593
2214-7853
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS&DestLinkType=FullRecord;UT=WOS:000416470400046
33rd Danubia Adria Symposium on Advances in Experimental Mechanics
Portorož, Slovenia
20.09.2016
23.09.2016
14.12.2017
Cheng-Chieh Wu
S. Weisbrich
F. Neitzel
eng
uncontrolled
Adjustment calculation
eng
uncontrolled
Finite element method
eng
uncontrolled
Substitute model
eng
uncontrolled
Complex structures
Ingenieurwissenschaften und zugeordnete Tätigkeiten
8 Zerstörungsfreie Prüfung
8.1 Sensorik, mess- und prüftechnische Verfahren
Material
Materialien und Stoffe
Verlagsliteratur
Volltext-PDF im Netzwerk der BAM verfügbar ("Closed Access")
37529
2016
eng
52
53
conferenceobject
Ljubljana
Narodna in univerzitetna knjižnica, Ljubljana
0
--
--
--
Approximate model for geometrical complex structures
Many engineering structures are made of composite materials or metal foam. To simulate the deformational behaviour of these structures often requires a high number of discretisation elements. This in turn yields a very large system of linear equations that are extremely time and memory consuming or practically impossible to solve. It is therefore desirable to find an approach to overcome this obstacle.
33rd Danubia- Adria Symposium on Advances in Experimental Mechanics - BOOK OF ABSTRACTS
978-961-94081-0-0
33rd Danubia- Adria Symposium on Advances in Experimental Mechanics
Portorož, Slovenia
20.09.2016
23.09.2016
Cheng-Chieh Wu
S. Weisbrich
F. Neitzel
eng
uncontrolled
Inverse analysis
eng
uncontrolled
Finite element method
eng
uncontrolled
Least-squares adjustment
Analytische Chemie
Ingenieurwissenschaften und zugeordnete Tätigkeiten
8 Zerstörungsfreie Prüfung
8.1 Sensorik, mess- und prüftechnische Verfahren
Material
Analytical Sciences
Volltext-PDF im Netzwerk der BAM verfügbar ("Closed Access")
Graue Literatur
37523
2016
eng
poster
0
--
--
--
Approximate model for geometrical complex structures
Many engineering structures are made of composite materials or metal foam. To simulate the deformational behaviour of these structures often requires a high number of discretisation elements. This in turn yields a very large system of linear
equations that are extremely time and memory consuming or practically impossible to solve. It is therefore desirable to find an approach to overcome this obstacle.
33rd Danubia- Adria Symposium on Advances in Experimental Mechanics
Portorož, Slovenia
20.09.2016
23.09.2016
Cheng-Chieh Wu
eng
uncontrolled
Inverse analysis
eng
uncontrolled
Finite element method
eng
uncontrolled
Least-squares adjustment
Analytische Chemie
Ingenieurwissenschaften und zugeordnete Tätigkeiten
8 Zerstörungsfreie Prüfung
8.1 Sensorik, mess- und prüftechnische Verfahren
Material
Analytical Sciences
Volltext-PDF im Netzwerk der BAM verfügbar ("Closed Access")
Präsentation
37524
2016
eng
lecture
0
--
--
--
Approximate model for geometrical complex structures
Many engineering structures are made of composite materials or metal foam. To simulate the deformational behaviour of these structures often requires a high number of discretisation elements. This in turn yields a very large system of linear equations that are extremely time and memory consuming or practically impossible to solve. It is therefore desirable to find an approach to overcome this obstacle.
33rd Danubia- Adria Symposium on Advances in Experimental Mechanics
Portorož, Slovenia
20.09.2016
23.09.2016
Cheng-Chieh Wu
eng
uncontrolled
Inverse analysis
eng
uncontrolled
Finite element method
eng
uncontrolled
Least-squares adjustment
Analytische Chemie
Ingenieurwissenschaften und zugeordnete Tätigkeiten
8 Zerstörungsfreie Prüfung
8.1 Sensorik, mess- und prüftechnische Verfahren
Material
Analytical Sciences
Volltext-PDF im Netzwerk der BAM verfügbar ("Closed Access")
Präsentation
37521
2016
eng
poster
0
--
--
--
Determination of an approximate anisotropic model for a given geometrical complex isotropic structure by means of finite element method and least-squares adjustment
Many engineering structures are made of composite materials or metal foam. To simulate the deformational behaviour of these structures often requires a high number of discretisation elements. This in turn yields a very large system of linear equations that are extremely time and memory consuming or practically impossible to solve. It is therefore desirable to find an approach to overcome this obstacle.
PhD Day 2016
Berlin, Germany
01.09.2016
Cheng-Chieh Wu
eng
uncontrolled
Least-Squares Adjustment
eng
uncontrolled
Inverse Analysis
eng
uncontrolled
Finite Element Method
Analytische Chemie
Ingenieurwissenschaften und zugeordnete Tätigkeiten
8 Zerstörungsfreie Prüfung
8.1 Sensorik, mess- und prüftechnische Verfahren
Material
Analytical Sciences
Volltext-PDF im Netzwerk der BAM verfügbar ("Closed Access")
Präsentation