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SUMMARY:CESS Seminar - Structural Health Monitoring of Concrete Infrastruc
 ture Employing a Holistic Stress Wave-based Approach
DTSTART:20220506T121500
DTEND:20220506T130000
DTSTAMP:20260916T032136Z
UID:a83413f9f4c53bca150b3cfe06fc7b74bf6946eec1e905282887b81c
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Thomas Schumacher\, Associate Professor in Civil Engine
 ering at Portland State University\nAbstract\nThe goal of structural healt
 h monitoring (SHM) is to use sensors and instrumentation to gather quantit
 ative data from a structural system in order to infer on its performance a
 nd condition changes\, and thus enable an owner to make informed maintenan
 ce and repair decisions. To this end\, acoustic emission monitoring has be
 en proposed as a passive technique to capture fracture processes within a 
 structure. Recently\, active ultrasonic stress wave monitoring has been ev
 aluated\, offering high sensitivity to minute and slowly varying changes i
 n a structure such as variations in internal stress and temperature\, or d
 evelopment of micro-cracking due to aging and degradation. Both techniques
  can be performed with the same instrumentation and are fundamentally base
 d on the same physics\, which is wave motion in solids. Each technique can
  provide important insights into processes occurring within a structure. I
 n this seminar\, a combined approach that takes advantage of the strengths
  of both techniques is discussed that offers new opportunities for SHM of 
 concrete infrastructure. A general introduction and the motivation for SHM
  are discussed first\, followed by some select experiments and field tests
  the presenter has performed over the last 15 years\, highlighting the com
 plementary nature of these two techniques. Opportunities for applications 
 and further research conclude the seminar.\n\nBiography\nThomas Schumacher
  is currently an Invited Professor at the MCS Laboratory at EPFL-ENAC and 
 an Associate Professor in Civil Engineering at Portland State University. 
 After earning his undergraduate degree in Civil Engineering at the Berner 
 Fachhochschule\, Switzerland in 2000\, he worked as a structural and proje
 ct engineer for a consulting firm for five years. He left design practice 
 in 2004 to expand his education abroad and earned M.S. and PhD Degrees fro
 m Oregon State University in 2006 and 2010\, respectively. Schumacher is a
  licensed professional engineer (PE) in the State of Delaware and an activ
 e member of the American Concrete Institute (ACI)\; he currently serves as
  the Chair of ACI Committee 444–Structural Health Monitoring. His primar
 y research interests are in the area of non-destructive evaluation (NDE) o
 f civil infrastructure with a focus on concrete structures. In particular\
 , he is interested in stress wave and vibration-based methods such as acou
 stic emission and ultrasonic monitoring and impulse response testing\, res
 pectively. He has also been collaborating with faculty at the University o
 f Delaware to develop a novel distributed carbon nanotube-based sensor tha
 t can be integrated with structural composites to form a self-sensing rein
 forcement to repair and rehabilitate concrete as well as steel structures.
  Additionally\, he is interested in video-based techniques to monitor stru
 ctural motion. Schumacher’s ultimate goal is to integrate quantitative i
 nformation from NDE measurements into systems management tools allowing ag
 encies to make informed maintenance and repair decisions.\n 
LOCATION:GC B3 30 https://plan.epfl.ch/?room==GC%20B3%2030
STATUS:CONFIRMED
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