PacTrans Seminar Series

  • April 23, 2015

    Tuesday, 4/28: Dr. Imad Al-Qadi, PacTrans Transportation Seminar

    If you are unable to attend in person but would still like to hear the talk, the seminar will be broadcast for live viewing. Watch the seminar online at 9:30 a.m. PST.

    Spring_seminar_Imad_Al-Qadi_web_header

    Organized by

    The Pacific Northwest Transportation Consortium (PacTrans)
    USDOT University Transportation Center for Federal Region 10

    Presentation Title

    Transportation Infrastructure Assessment Techniques Using Ground Penetrating Radar

    Abstract

    The continuous monitoring of transportation infrastructure is necessary to maintain a durable and safe system. Many noninvasive techniques have been used including instrumentation, acoustic emission, infrared, and electromagnetic waves.  Ground penetrating radar (GPR) technology based on electromagnetic waves has been used to assess the performance of transportation facilities for the past three decades. After all this time, the main question remains: “How well does GPR work and under what conditions?” Results show that while GPR works well for some situations, it is not appropriate for others. GPR has been successfully used for bridge and pavement assessment, primarily for estimating layer thickness and localizing moisture accumulation within structure layers. However, GPR data interpretation is often difficult because the “images” obtained from GPR-reflected signals are dependent on the priori unknown dielectric properties of structural materials. In addition, GPR cannot detect layer interfaces unless a significant contrast in the dielectric constants exists between the two considered materials. GPR data analysis can also be cumbersome and unreliable due to the large amount of data collected during the surveys. Various signal and data processing techniques have been developed to estimate the dielectric properties of surveyed structures from GPR reflected signals. These processing techniques have been successfully used to enhance the accuracy of GPR data interpretation results and to improve the quality of the GPR signal. Among his diverse research interests, Dr. Al-Qadi has been working on GPR research for more than two decades. He is currently working on utilizing GPR data to predict in-situ real-time asphaltic material density. Dr. Al-Qadi will discuss the recently developed techniques and their field application for quality control/quality assurance, predicting the layer thicknesses of pavement systems, detecting flaws, and predicting density of asphalt concrete.

    Speaker

    Professor Imad Al-Qadi is the Founder Professor of Engineering at the University of Illinois at Urbana-Champaign. He is also the Director of the Advanced Transportation Research and Engineering Laboratory (ATREL) and the founding Director of the Illinois Center for Transportation (ICT). Prior to that, he was the Charles E. Via, Jr. Professor at Virginia Tech. A registered professional engineer, Professor Al-Qadi has authored/co-authored more than 550 publications and has delivered more than 550 presentations including numerous keynote lectures. He has led more than 100 projects to completion. In addition, he is managing more than 60 projects annually as an ICT director since 2006. He is the past president of the ASCE T&DI Board of Governors and the Editor-in-Chief of the International Journal of Pavement Engineering. Professor Al-Qadi has received numerous prestigious national and international honors and awards including the NSF Young Investigator Award, the quadrennial IGS Award, the ASCE James Laurel Prize, the ARTBA Steinberg Award, the ASCE Turner Award, and the French Limoges Medal. He is a Chapter Honorary Member of Chi Epsilon at the University of Illinois, an Honorary Member of the Societa Italiana Infrastructure Viarie, Emeritus Member of TRB Committee AHD25 on Sealants and Fillers for Joints and Cracks, and an Honorary Professor at Southeast University in Nanjing, China, and KTH Royal Institute of Technology in Stockholm, Sweden. In 2010 he was elected as an ASCE Distinguished Member, the highest honor by ASCE, for his exemplary leadership and innovation in the civil engineering profession. Dr. Al-Qadi holds a B.S. degree from Yarmouk University and M.Eng. and Ph.D. degrees from Penn State University, all in civil engineering. His expertise are on highway and airfield pavement mechanics, tire loading, fracture, and interface, GPR, asphalt rheology, pavement sustainability, and forensic engineering and arbitration.

    For questions, please contact Maria Bayya, assistant director for PacTrans, at pactrans@uw.edu or (206) 685‐6648.

  • March 13, 2015

    Spring Regional Transportation Seminar: Dr. Imad Al-Qadi

    Spring_seminar_Imad_Al-Qadi_web_header

    Organized by

    The Pacific Northwest Transportation Consortium (PacTrans)
    USDOT University Transportation Center for Federal Region 10

    Presentation Title

    Transportation Infrastructure Assessment Techniques Using Ground Penetrating Radar

    Abstract

    The continuous monitoring of transportation infrastructure is necessary to maintain a durable and safe system. Many noninvasive techniques have been used including instrumentation, acoustic emission, infrared, and electromagnetic waves.  Ground penetrating radar (GPR) technology based on electromagnetic waves has been used to assess the performance of transportation facilities for the past three decades. After all this time, the main question remains: “How well does GPR work and under what conditions?” Results show that while GPR works well for some situations, it is not appropriate for others. GPR has been successfully used for bridge and pavement assessment, primarily for estimating layer thickness and localizing moisture accumulation within structure layers. However, GPR data interpretation is often difficult because the “images” obtained from GPR-reflected signals are dependent on the priori unknown dielectric properties of structural materials. In addition, GPR cannot detect layer interfaces unless a significant contrast in the dielectric constants exists between the two considered materials. GPR data analysis can also be cumbersome and unreliable due to the large amount of data collected during the surveys. Various signal and data processing techniques have been developed to estimate the dielectric properties of surveyed structures from GPR reflected signals. These processing techniques have been successfully used to enhance the accuracy of GPR data interpretation results and to improve the quality of the GPR signal. Among his diverse research interests, Dr. Al-Qadi has been working on GPR research for more than two decades. He is currently working on utilizing GPR data to predict in-situ real-time asphaltic material density. Dr. Al-Qadi will discuss the recently developed techniques and their field application for quality control/quality assurance, predicting the layer thicknesses of pavement systems, detecting flaws, and predicting density of asphalt concrete.

    Speaker

    Professor Imad Al-Qadi is the Founder Professor of Engineering at the University of Illinois at Urbana-Champaign. He is also the Director of the Advanced Transportation Research and Engineering Laboratory (ATREL) and the founding Director of the Illinois Center for Transportation (ICT). Prior to that, he was the Charles E. Via, Jr. Professor at Virginia Tech. A registered professional engineer, Professor Al-Qadi has authored/co-authored more than 550 publications and has delivered more than 550 presentations including numerous keynote lectures. He has led more than 100 projects to completion. In addition, he is managing more than 60 projects annually as an ICT director since 2006. He is the past president of the ASCE T&DI Board of Governors and the Editor-in-Chief of the International Journal of Pavement Engineering. Professor Al-Qadi has received numerous prestigious national and international honors and awards including the NSF Young Investigator Award, the quadrennial IGS Award, the ASCE James Laurel Prize, the ARTBA Steinberg Award, the ASCE Turner Award, and the French Limoges Medal. He is a Chapter Honorary Member of Chi Epsilon at the University of Illinois, an Honorary Member of the Societa Italiana Infrastructure Viarie, Emeritus Member of TRB Committee AHD25 on Sealants and Fillers for Joints and Cracks, and an Honorary Professor at Southeast University in Nanjing, China, and KTH Royal Institute of Technology in Stockholm, Sweden. In 2010 he was elected as an ASCE Distinguished Member, the highest honor by ASCE, for his exemplary leadership and innovation in the civil engineering profession. Dr. Al-Qadi holds a B.S. degree from Yarmouk University and M.Eng. and Ph.D. degrees from Penn State University, all in civil engineering. His expertise are on highway and airfield pavement mechanics, tire loading, fracture, and interface, GPR, asphalt rheology, pavement sustainability, and forensic engineering and arbitration.

    For questions, please contact Maria Bayya, assistant director for PacTrans, at pactrans@uw.edu or (206) 685‐6648.

  • June 10, 2014

    PacTrans Spring 2014 Seminar

    On May 30, Joe Schofer came to the University of Washington and gave a talk entitled “Making Transportation Analysis Count: Bridging the Gap between Politics and Planning” as part of the 2014 Spring Seminar. Around 50-60 people were in attendance, including transportation students, researchers, and professionals. The talk was about how to persuade politicians and members of the public on the funding of transportation projects, and all of the factors that go into decisions to fund projects. The talk was very informative as the political process can be a major hurdle in the advancement of transportation. He illustrated his points with many real-world proposals, including King County’s failed Proposition 1 and a proposed heavy rail flyover in a vibrant neighborhood on the North Side of Chicago. We would like to thank Dr. Schofer for coming and giving the talk, as it was an excellent and insightful experience for all who attended.

    To view the slides from Dr. Schofer’s presentation, click here: Schofer Making Analysis Count. A video of the presentation, as well as some pictures, can be seen below.

    SS14A (1) SS14A (2) SS14A (3)

  • April 15, 2014

    Pactrans Seminar Series: Making transportation analysis count – Bridging the gap between politics & planning

    Please join us in welcoming Dr. Joe Schofer from the Northwestern University. He will be giving a talk on Friday, May 30th in the HUB (room 334) on the UW Seattle Campus from 3:30 p.m. to 4:30 a.m. There will be a reception immediately following the talk. The talk is free and everyone is welcome.

    For more information on Dr. Schofer’s talk, click here.

  • January 24, 2014

    Pactrans Seminar Series: School Siting and Children’s Travel – Planning to Support Active Transportation

    Please join us in welcoming Dr. Ruth Steiner from the University of Florida. She will be giving a talk on Wednesday, February 5th in the HUB (room 334) on the UW Seattle Campus from 10:30 a.m. to 11:20 a.m.
    The talk is free and everyone is welcome.

    Additional information: PacTrans_WinterSeminar_RuthSteiner_February-5-2014.pdf