Smart materials, within the realm of structural engineering, are mainly used as either sensoric mechanisms or as structural damping mechanisms. For the most part, structural enhancement utilizing smart materials is not seen in main stream structural engineering practices.
Piezoelectric ceramics and shape memory alloys are two smart materials that are explored. In comparison shape memory alloys have far greater actuation strain (2% - 7%) than piezoelectric (0.08% - 0.11%) ceramics.
Piezoelectric actuators are employed as surface actuators. Shape memory alloys are also explored in this manner, but the analysis is taken a step further where shape memory alloys are explored as beam and column retrofit elements.
Because of the low mechanical range of the piezoelectric material, the potential for stress reduction is bound to lower stress applications. The general conclusion for shape memory alloys is that it would be suitable for high stress applications which include main stream steel applications.
|Advisor:||Kim, Yail Jimmy, Yang, Mijia|
|Commitee:||Wu, Xiangfa, Yazdani, Frank|
|School:||North Dakota State University|
|School Location:||United States -- North Dakota|
|Source:||MAI 54/06M(E), Masters Abstracts International|
|Subjects:||Civil engineering, Environmental engineering|
|Keywords:||Piezoelectric, Shape memory alloys, Smart materials|
Copyright in each Dissertation and Thesis is retained by the author. All Rights Reserved
The supplemental file or files you are about to download were provided to ProQuest by the author as part of a
dissertation or thesis. The supplemental files are provided "AS IS" without warranty. ProQuest is not responsible for the
content, format or impact on the supplemental file(s) on our system. in some cases, the file type may be unknown or
may be a .exe file. We recommend caution as you open such files.
Copyright of the original materials contained in the supplemental file is retained by the author and your access to the
supplemental files is subject to the ProQuest Terms and Conditions of use.
Depending on the size of the file(s) you are downloading, the system may take some time to download them. Please be