Applications of smart materials in structural engineering.

Cai, C.S.; Wu, Wenjie; Chen, Suren; Voyiadjis, George Z.; Louisiana State University. Department of Civil Engineering

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ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.

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Applications of smart materials in structural engineering.

2003-10-01
By Cai, C.S. ; Wu, Wenjie ; Chen, Suren ; ...

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English

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Details:

Creators:

Cai, C.S. ; Wu, Wenjie ; Chen, Suren ; Voyiadjis, George Z.

Cai, C.S. ; Wu, Wenjie ; Chen, Suren ; Voyiadjis, George Z. Less -
Corporate Creators:

Louisiana State University. Department of Civil Engineering
Corporate Contributors:

Louisiana Transportation Research Center
Subject/TRT Terms:

[+]

Beams Crystal Structures Deformation Curve Elasticity (Mechanics) Force-extension Curve Infrastructure Physical Properties Shape Memory Smart Materials Structural Engineering Superelasticity Tension Tests
Resource Type:

Tech Report
Geographical Coverage:

Louisiana
Corporate Publisher:

Louisiana State University. Department of Civil Engieering
Abstract:

With the development of materials and technology, many new materials find their applications in civil engineering to deal with the deteriorating infrastructure. Smart material is a promising example that deserves a wide focus, from research to application. With two crystal structures called Austenite and Martensite under different temperatures, smart material exhibits two special properties different from ordinary steels. One is shape memory, and the other is superelasticity. Both of these two properties can suit varied applications in civil engineering, such as prestress bars, self-rehabilitation, and two-way actuators, etc.

One of the main objectives of the research is to investigate the application of smart materials in civil engineering by focusing on the literature review, basic information collection, and basic mechanic properties of smart materials. In axial tension tests, the force-extension curve and stress-strain curve of shape memory and superelasticity materials were measured separately. These curves verify the research of forerunners.

Four beam experiments were conducted to evaluate the performance of flexure beams with superelasticity material as reinforcement bars. Load-displacement relationship at the midspan, strains on the surface of the concrete beam, and cracking width for different loads were measured.

This research is just the first step in the investigation of the application of smart materials in structural engineering. Some bigger beams are prepared for experiments in the near future.
Format:

PDF
Funding:

LTRC Project No. 02-4TIRE ; State Project No. 736-99-1055

LTRC Project No. 02-4TIRE ; State Project No. 736-99-1055 Less -
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:1e9382e6d4cc45a5fb47e15910b71e705ed2e083a4994f25e44742a0ac761831
Download URL:

https://rosap.ntl.bts.gov/view/dot/21820/dot_21820_DS1.pdf
File Type:

[PDF-5.98 MB]