An internet based educational platform for earthquake engineering laboratory experiments
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An Internet-based Educational Platform for Earthquake Engineering Laboratory Experiments. Chencheng Wu, Le Yu, Shirley J. Dyke, Christopher Beeler and Jian Ouyang Purdue University iCEER 2011 Belfast, Ireland. Earthquakes Worldwide. Eastern US Earthquake (August 24 th 2011). Introduction.

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An Internet-based Educational Platform for Earthquake Engineering Laboratory Experiments

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An internet based educational platform for earthquake engineering laboratory experiments

An Internet-based Educational Platform for Earthquake Engineering Laboratory Experiments

Chencheng Wu, Le Yu, Shirley J. Dyke, Christopher Beeler and Jian Ouyang

Purdue University

iCEER 2011

Belfast, Ireland


Earthquakes worldwide

Earthquakes Worldwide


Eastern us earthquake august 24 th 2011

Eastern US Earthquake (August 24th 2011)


Introduction

Introduction

  • Earthquake simulator tables, or shake tables, are used for experimental research in earthquake engineering.

  • This equipment is capable of reproducing the motion of the ground during an earthquake, allowing for controlled testing of structures subjected to earthquakes.

  • New concepts and techniques are often tested on scaled structures using shake tables before implementation.

  • Bench-scale shake tables offer an ideal mechanism to provide students access to such “hands-on” experiments.


An internet based educational platform for earthquake engineering laboratory experiments

NEES

3435 registered NEEShub users and thousands of NEES users of equipment sites and cyberinfrastructure at any point in time highlight the global reach of NEES.

NEES Sites

NEEScomm

  • Data Repository

  • Computational Simulation

  • Community Support

Cornell University

University of California, Davis

Rensselaer Polytechnic Institute

University of Texas

University of California, Los Angeles

University of Minnesota

University of California, Berkeley

University of Nevada, Reno

University of Illinois

Lehigh University

Oregon State University

UC Santa Barbara

UC SanDiego

University at Buffalo


Introduction1

Introduction

Existing state-of-the-art cyberinfrastructure tools developed by NEESit, the technical support and development component of NEES, have been developed recently for teleparticipation and teleoperation.

We have been able to take advantage of these capabilities to educate the next generation of civil engineers!


Outline

Outline

  • Objectives of the Collaboratory

  • Lab Station Components

  • Instructional Materials Available

    • Freshman Level Undergraduate Module

    • Senior Level Structural Dynamics Experiments

  • Evaluation of the Program

  • Closing


Objectives of the collaboratory

Objectives of the Collaboratory

  • To provide engineering students

    • an understanding of structural dynamics

    • experience with modern laboratory equipment and instrumentation

    • exposure to NEES and the latest capabilities regarding remote testing teleparticipation tools

    • provide a mechanism for training students to perform experiments

    • broader access to such tools

    • opportunities for K-12 outreach


Objectives of the collaboratory1

Objectives of the Collaboratory

  • 2 Lead Institutions

    • develop 2 initial exercises

    • evaluation & adapt

  • 5 Deployment Sites

    • implement 2 exercise

    • develop new exercises

  • Available to users


Lab station overview

Lab Station: Overview


System architecture

System Architecture

UCIST Shake Table

UCIST PC

(LabVIEW Machine)

Port = 8090

RDV

UCIST LabVEW

Server

TCP Server

Teleoperation

Control Panel

CompactRIO

Remote PC

TCP

Control Server

DAQ Daemon

NI- DAQ

RBNB Server

Port = 3333

Data Turbine PC

Axis Web Camera


Ucist shake table

UCIST Shake Table

CompactRIO 9516


Remote pc teleoperation control panel

Remote PC - Teleoperation Control Panel


Remote pc teleoperation control panel1

Remote PC - Teleoperation Control Panel


Ucist pc teleoperation

UCIST PC Teleoperation

Remote PC

  • TCP server

    • Listen on port 8090

    • Receive commands from remote PC

      • Simulation pattern

      • Excitation parameters (eg. Amplitude & Frequency)

      • Simulation duration

    • Send commands to and receive feedbacks

      from Control Server

  • Control server

    • Receive commands from TCP Server

    • Generate excitations according to simulation pattern and parameters (eg. Sinusoidal )

    • Move Shake Table with generated excitations

Commands

UCIST

PC

TCP Server

Control Server

UCIST Shake Table


Rbnb server

RBNB Server


Introduction to earthquake engineering

Introduction to Earthquake Engineering

Freshman Engineering module developed at the University of Connecticut


Instructional materials

Instructional Materials

  • Students learn necessary mathematics to study the forced and free vibration of a single-degree-of-freedom structure

  • A 1-story seismically excited shear frame is used to apply their new knowledge


Instructional materials1

Instructional Materials

  • Overview (Freshman Level 3 weeks)

    • Earthquake Engineering Introduction

    • SDOF Equations of Motion

    • Programming in Matlab

    • NEES Introduction

    • Teleparticipation & Teleoperation of Actual Experiment

  • Each student is required to submit weekly homeworks and a final lab report including a discussion of observations and results


Two experiments developed for structural dynamics

Two Experiments Developed for Structural Dynamics

Senior/Grad Level

Experiments developed at Purdue University


Instructional materials2

Instructional Materials

  • EXPERIMENT 2: Design Vibration Absorber

    • Two DOF building model

    • Passive device to reduce responses

    • Design length of pendulum and additional mass

    • Verify control results using teleoperation


Lab station activities

University of California, Berkeley

Model Shake--Aftermath

Lab Station: Activities


Evaluation program

Evaluation Program

  • Evaluation & Feedback

    • On-line surveys conducted to obtain student and faculty input

    • Evaluation expert is part of the project

  • 12 undergraduate engineering courses at 5 universities over the course of four years; total of 505 students surveyed


Evaluation program1

Evaluation Program

  • Goals

    • Describe classroom implementation of virtual laboratory

    • Estimate the impact of virtual experiments on student learning

    • Describe associations between gender and patterns in learning

  • Comments

    • “[It] Was very hands on, and many people learn better by doing and seeing than just calculations”

    • “It was a very interesting experience. The fact that you could manipulate a structure in another building across campus from you room is amazing.”


Benefits to the students

Benefits to the Students

  • More flexible and complex experiments using multiple sites

  • Experience with cyberinfrastructure

  • Flexible scheduling of experiments

  • Access for students at a larger number of universities to participate in advanced experiments


Implications for engineering educators

Implications for Engineering Educators

  • Provide opportunities for students worldwide to use tele-operated shake tables for learning

  • Review resources at NEES and UCIST

  • Think creatively about student experiences in your classroom, especially the extent to which men and women may perceive differences in their abilities that may contribute to differential rates of pursuit of further engineering education.


Acknowledgments

Acknowledgments

  • NSF DUE 0618605 and 1058462 (CCLI)

  • NEESinc and NEESit

  • NSF funding for UCIST (1998-2002)

    • Support for UCIST from NSF Grant (DUE 9950340)

    • Mid-America Earthquake Center

  • Quanser Consulting


2020 vision report

2020 Vision Report

  • January 26-27, 2010

  • Identify the major strategic directions for the future of earthquake engineering research and education

    http://nees.org


An internet based educational platform for earthquake engineering laboratory experiments

For more information see:

http://engineering.purdue.edu/ucist

andhttp://nees.org/


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