Civil Engineering Graduate Seminar: February 23

Civil Engineering Seminars:
Time: 4-5pm, Thursday (Feb. 23rd)
Location: Dow 642
Public welcome

Title: Increasing the Piezoelectric Effect in Cement Paste.

Presenter: Benjamin Roskoskey, MS Civil Engineering Student Department of Civil and Environmental Engineering, (Adviser: Dr. Andrew Swartz).

Abstract: The object of this study is to attempt to increase the piezoelectric effect (and as a result the reverse piezoelectric effect) in cement paste. Piezoelectric sensors and actuators are frequently used nowadays to monitor the health of structures. However they are expensive and when embedded within concrete, can separate from the concrete and cause degradation due to differences between their Young’s modulus and thermal expansion coefficient and those of the concrete. The expectation is that the concrete itself, by utilizing its piezoelectric effect, can be used as the sole means of structural health monitoring for a structure.

Title: Enabling Sustainable and Natural Hazard Resistant Structures

Presenter: Joshua Cardinal , MS Civil Engineering Student Department of Civil and Environmental Engineering, (Adviser: Dr. Yue Li)

Abstract: Building construction consumes 40% of the raw stone, gravel, and sand used globally, and 25% of the virgin wood. Current research into sustainable design options for structures has become an increased topic for discussion. Natural hazard resistance is a significant part of the structural design requirements of a building, particularly in geographical locations where seismic hazards are prevalent. Sustainability can be identified in three key areas: economic, social, and environmental impact. The concept of sustainability has started to evolve from focusing on only one of the areas mentioned above to an integrated design method. This presentation will focus on researching the development of a new metric of design that encompasses all three areas to balance the deficiencies of each key area.

Structural design must be understood and approached holistically to generate the most viable option for all three areas of sustainability. This involves the coordination of all disciplines involved in the completion of a structure. By utilizing the metric presented, seismic structural analysis using ANSYS will be used to generate the maximum story drift, which will be used to estimate the damage and repair costs to the structure, as well as estimate a dollar amount associated with casualty losses. Environmental impact analysis will be performed using the program SimaPro through life-cycle analysis. To help validate structural and social losses, the FEMA program HAZUS will provide a comparison and validation for structural and social damage by geographic location.