Hybrid Structural Testing Center - NEES

Intoduction of KOCED Program and
Hybrid Structural Testing Center in Korea
Chul-Young Kim
Professor of Myongji University
Deputy Director of KOCED Program Management Center
Deputy Director of Hybrid Structural Testing Center
Young-Suk Park
Professor of Myongji University
Director of Hybrid Structural Testing Center
Jae Kwan Kim
Professor of Seoul National University
Director of KOCED Program Management Center

KOCED Program
• Build 6 brand-new large scale testing facilities at major
universities distributed around the Korea
• Link using high performance information network
( KREONET )
• Develop cyberinfrastructure
• Shared use for research and education

KOCED Vision
Share &
Collaborate
Researcher
Cyberinfrastructure
KOCED
Consortium
Testing Facilities
University
KREONET
Industry
International
link
Data
repository
Computing
Clusters
Government/Public

Time Table of KOCED Program
2004~2009
2009~2024 2024~
• Construction of
Test facilities
• Development of
KOCED CI
Collaboratory
operation
by consortium
Turnover
to the hosts
KOCED KOCED Consortium
PMC
KOCED Consortium Host KOCED Universities
Consortium
5 years 15 years

6 KOCED Testing Centers
Myongji University
Hybrid Structural Testing Center
KAIST
Geotechnical Centrifuge Testing Center
Keimyung University
Chonbuk National University
Wind Tunnel Center
Advanced Construction
Materials Testing Facility
Chonnam National University
Wave Simulation & Research Laboratory
Pusan National University
Multi-platform Seismic
Simulation Center

Hybrid Structural Testing Center
Item
Description
Purpose
Real-time or near real-time pseudodynamic
or hybrid structural testing
of multi-degrees of freedom
structural systems and components
- Indoor
Strong floor
: 48.9 m (L) ⅹ 12.8 m (W)
- Extended outdoor
: 6.0 m (L) ⅹ 6.0 m (W) ⅹ3 ea
Reaction wall
Solid Type
- 8.0 m (L) ⅹ 12.0 m (H)
- 24.0 m (L) ⅹ [12.0+9.0+6.0] m (H)
Actuator
- Dynamic: 25, 100, 200 ton
- Static: 500 ton

Geotechnical Centrifuge Testing Center
Item
Description
Scaled model tests that can simulate
Purpose
realistic stress field with high level of
centrifuge force
- Platform radius: 5 m
Centrifuge
- Maximum capacity: 240 g·ton
- Maximum acceleration: 130 g
- Maximum weight of model: 240 ton
Other equipments
- Advanced 4DOF in-flight robot
- Biaxial shake table system

Multi-platform Seismic Simulation Center
Item
Description
Seismic tests of various models of
Purpose
buildings, bridges, and other structures
and equipments
One 6-DOF
fixed table
-Size: 4 m ⅹ4 m
- Nominal payload: 30 ton
- Maximum acceleration: 1.5 g
-Size: 5 m ⅹ5 m
Two 3-DOF
movable tables
- Nominal payload: 60, 30 ton
- Maximum acceleration: 1.25, 1.0 g
- Maximum span : 40 m

Advanced Construction Materials Testing Center
Item
Description
Purpose
Time-sharing access to the state-of-theart
equipments necessary for
development and performance test of new
construction materials and components
- Concrete and rock test lab
- Metal and composite materials test lab
Laboratories
- Long term behavior test lab
- Microstructure test lab
- Smart sensor and NDT test lab
- Structural component test lab
- 5MN large material testing machine
Major
Equipments
- 5MN compression testing machine
- Universal testing machine
-XRF/XRD

Wind Tunnel Center
Item
Description
Investigate wind induced problems at
natural atmospheric boundary layer flow
Purpose
such as wind effects on long span bridges,
high rise buildings, urban areas, and
various industrial applications
Low speed
section
- 40 m (L) ⅹ12 m (W) ⅹ2.5 m (H)
- Wind speed: 0.3 ~ 12 m/s
High speed
section
- 20 m (L) ⅹ5 m (W) ⅹ2.5 m (H)
- Wind speed: 0.5 ~ 24 m/s

Wave Simulation & Research Laboratory
Item
Description
Provide the ocean engineering research
Purpose
community with access to wave basins,
flumes, and other measurement tools and
sensors
3D wave basin
- 50 m (L) ⅹ50 m (W) ⅹ1.5 m (H)
- Maximum wave height: 0.6 m
3D tidal basin
- 40 m (L) ⅹ30 m (W) ⅹ1 m (H)
2D wave flume
- 100 m (L) ⅹ2 m (W) ⅹ3 m (H)
- Maximum wave height: 1 m

KOCED CI Framework
Experiment service
Researcher
University
CI services
Industry
Government/Public
KOCED Portal:
Gateway to KOCED
services

Experiment System for R&D
• Provide experiment service
according to the users’ demand
• Inquiry of schedule of testing
centers and equipments
• Making an estimate of a testing
• Making a reservation for centers
• Sharing testing data
• Performing remote experiment
and monitoring

KOCED CI Services
Data, Information and
Knowledge Management service
Collaboration Service
Virtual Laboratory
Education Grid
Computing Cluster
Online Expert Consulting

0.25
0.2
0.15
0.1
0.05
0
-0.05
-0.1
-0.15
SRC-S-SP00-S 0.22g
Input Earthquake
Result Data
-0.2
0 1 2 3 4 5 6 7
Time(sec)
Data, Information and Knowledge Management Services
Researcher
Deposit
experimental
data
Central Data
Repository
Data
Query
Research
Institute
Raw 데이터 Reduced 데이터 Curated 데이터
DAQ 장비에서 계측된 데이터
- Text 파일 형태 -Excel 파일형태
Raw 데이터를 물리량으로 변환한
데이터(예:voltage→ strain)
Accelation
Raw 데이터를 비교/분석하여
의미있는 결과로 변환한 데이터
University
사진 동영상 결과 보고서
Industry
• Standardization of processes and procedures of the experiments
• KOCED Experiment Data Models for 6 testing centers
Government
/public
• All of the raw, structured, and processed data in the central data repository
• KOCED Shared Data Model to accelerate the transition from data to information and knowledge
• Relevant data policy

Collaboration Services
Tele-presence
TP Client 1
Application
Testing facility
Video
TP Server
TP Client 2
. . . . .
.
Teleconference
Collaborative design
Audio
TP Client n
Web-casting
Scan Converter
• Tele-presence
• Maximum 30 parties with maximum 12 divided screens
• Share of PPT files, electric board, chatting windows
• Web-Casting
Encoding
Server
Streaming
Server
Storage
Open testing
VOD Service
• Unidirectional and no limit in the number of recipients
Online lecture
• No requirement of special equipments other than a web camera
Remote testing

Virtual Laboratory
Input of structure &
load information
Visualization of analysis
result & comparison with the
experimental data
14
12
2 phase model
single phase model
dry ground
10
Ground accleration (g)
0.4
0.2
0
-0.2
-0.4
0 10 20 30 40 50 60
Time (sec)
Transfer function
8
6
4
2
0
0 5 10 15 20 25
Frequency (Hz)
0.01
2 phase model
single phase model
dry ground
0.005
Displacement (m)
0
-0.005
-0.01
0 2 4 6 8 10
Time (sec)
SI from experimental
data
• Shake table testing structure model & 3D truss model
• Elimination & addition of members
• Modification of member properties
• Multi-support excitation
• Visualization of the result
• Vibration mode, stress, strain, deformation
• Time histories & Fourier transforms of responses
• Real measured data can be fed into the virtual model

Education Grid
Control Signal
Education Grid
Reservation
Registration
1 Mini shake table I
2 Mini shake table II
3 Mini wind tunnel
4 Mini centrifuge
5 Mini water basin
6 Mini UTM
7 Mini MOST
8 Mini truss bridge
DATA Acquisition
DAQ and Control PC
DATA
Acquisition
• Independent from the main CI
POP Server
• Real time online remote experiment
Control
Signal
Education Grid Portal
Access to a mini equipment
through Portal at confirmed time
Education Grid
Confirmation
User
Control a mini equipment
and acquire data through RDV
• Will be combined with the virtual laboratory capability

Computing Cluster
실험시설1 Facility 1
Piers 6, 7, 8 Models
Bent 5
Pier 6 Pier 7 Pier 8 Pier 9
Abutment 10
실험시설3 Facility 3
Pier 9 Model
계산자원(HPC)
Foundations 6, 7, 9, Deck
and and Abutments `Finite
Element Modeling
실험시설2 Facility 2
Foundation 8
Model
Hybrid
structural
testing
Structural analysis
and data visualization
• To serve online hybrid testing, visualization, and education grid
• 40 processors with one master node
• Extended by linking with a computing cluster built and operated by KISTI

Online Expert Consulting
Researcher University People
• To support industry
Expert list
Expert profile
Expert Q&A
• Link individuals or companies
seeking assistance with the experts
around the world
• Communicate or collaborate
Expert consulting
SMS
Online telepresence
consulting
online using the KOCED
telepresence system
• Provide dispersed collaboratory
design service

Hybrid Structural Testing Center
(HYSTEC)
12.0m 9.0m
6.0m
12.8m
48.9m
6.0m
6.0m
36.0m

Actuators
• Long stroke / High speed (to simulate real-time
earthquake motion)
• Multi-purpose / MDOFs
• Various actuating load capacities, speeds and
strokes ( Dynamic actuators )
Load Capacity
[kN]
Number
Static Dynamic
Stroke
[mm]
Velocity Servo Valve
[mm/sec] [gpm]
±250kN - 2 750 896 15/180
±500kN - 2 500 - 90
±1,000kN - 2 750 323 15/250
±2,000kN - 2 1,000 161 15/250
-5,000kN( comp.)
+3,000kN (tens.)
2 - 2,000 44 180
( 5MN Static actuator )

Hydraulic Power Supply
HPS
Hardline
HDM
180gpm@4EA=720gpm
P R D
1,000 gpm
350 gpm

Digital Control System
• FlexTest GT (4ch, 4stations) 2 sets
• FlexTest GT (2ch, 4stations) 1 set
• FlexTEst SE (1ch, 4stations) for Dynamic UTM
• Multi-Actuator control system
• Optimal Hybrid Testing Software
• 4 station multi-testing
• Real-time pseudo-dynamic / Hybrid testing
Controller
4ch, 4 station
HSM
180
gpm
HDM
HSM
250
gpm
HDM
HSM
180
gpm
Act. 250 kN
Act. 1000 kN
Act. 2000 kN
Act. 5,000kN

Universal Test Machines
• 5MN Dynamic UTM
- static and fatigue tests of structural members
- material test
Max. Capacity
Force
Stroke
Type
Dyn. Load rating
Frequency mm
Comp./Tensile
Vertical ±5,000kN 5Hz at ±10mm 500
• 5MN Static UTM
- concrete material test
Max. Capacity
Testing size
Base size
Velocity
Force = ±5,000kN / Stroke = 500mm
1,000(L)×1,000(W)×2,500(H)mm
1,850(L)×1,450(W)×800(W)mm
0.01 ~ 250mm/min.

DAQ Systems
Dynamic DAQ System
• 320 channels (10~1,000kHz/ch)
Multi-channel
port HUB
CRONOS
PL16
Ethernet
Workstation/Notebook
#1 #2 #3 #4 #5
Hybrid DAQ System
• The shared memory interface to communicate with
other hybrid testing equipments for fast data transfer
(Up to 10~100kS/s)
• 72 channels (Strain, LVDT, Accelerometer, Voltage,
Thermocouple)
• ScramNet Remote Data Acquisition (800kS/s for 6000,
7MS/s for HS system)
I/O modules
Static DAQ System
(High-speed static data logger)
• 190 channels for static signals
USB2.0
controller
USB
Ethernet
(Strain, LVDT, Load Cell, Voltage, Temperature)
• 1000ch/sec scanning rate
SCRAMNET
Controller
Optic Fiber
Control
System

Hybrid Test System
Simulation
Type
Control
Software
Analysis
Software
Mid-ware
(Software)
Mid-ware
(Hardware)
Status
Real Time STS/469d Simulink
xPC Target,
Real Time
Workshop
Scramnet,
Target PC
Done
793
OpenSees
OpenFresco,
CSI
None
Done
Quasi Static
793
Matlab
793 Simulink
OpenFresco,
CSI
OpenFresco,
CSI
None
None
Done
Done
793 Abaqus
OpenFresco,
CSI
None
In Progress
August 2009
Soft
Real Time
STS/469d
OpenSees
OpenFresco,
Simulink
Scramnet,
Target PC
In Progress

Case 1: 60m Monolithic PSC Girder
Fabrication on site/
Long-term Monitoring
Lifting-up Simulation
Resonance Test/
Static/Ultimate Performance
Test
Crack propagation
(350tf)

Case 2: 60m Segmental PSC Girder
Segmental Fabrication
Post-tensioning
Wire Disp.(Wire Sensor) vs Force
3500
3000
9 8 2 7 45 6
2500
Force (kN)
2000
1500
1000
500
Wire Disp. #2
Wire Disp. #4
Wire Disp. #5
Wire Disp. #6
Wire Disp. #7
Wire Disp. #8
Wire Disp. #9
Resonance Test/
Static/ Ultimate Performance Test
0
0 50 100 150 200 250 300 350 400 450 500
Vertical Disp. (mm)

Case 3: 30m Railway Bridge
Fabrication of Girders on site
Static/ Resonance Test
Train Load Simulation Test
Moving Girders

Case 4: Substructure of 20 stories APT Building
• ½ Scale sub-structure model (two stories)
• Specimen: PC member + post-tensioning
• Quasi-static & Hybrid Test
Loading
2.5m
Beam :
400*250mm
Column :
400*400mm
Loading
4m
Wall : 2m
(t=150mm)
2.5m
HC Slab 120mm
(topping: 50mm)
3m
3m

Concluding Remarks
• KOCED Collaboratory is ready for service from July 2009.
• Promote research collaborations and sharing of
experimental facilities & data
• Increase efficiency of R&D
• Accelerate the integration of research and education
• Development and application of hybrid structural test
system is under way.