Evaluation of fatigue-prone details using a low-cost thermoelastic stress analysis system.

Chase, Steven B.; Adu-Gyamfi, Yaw

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Evaluation of fatigue-prone details using a low-cost thermoelastic stress analysis system.

2016-11-01
By Chase, Steven B. ; Adu-Gyamfi, Yaw

File Language:

English

Details

Creators:

Chase, Steven B. ; Adu-Gyamfi, Yaw
Corporate Creators:

University of Virginia. Dept. of Civil and Environmental Engineering
Corporate Contributors:

Virginia Transportation Research Council (VTRC) ; United States. Federal Highway Administration ; Virginia. Dept. of Transportation
Subject/TRT Terms:
Publication/ Report Number:

FHWA/VTRC 17-R8
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

Virginia Transportation Research Council (VTRC)
Abstract:

This study was designed to develop a novel approach for in situ evaluation of stress fields in the vicinity of fatigue-prone details on highway bridges using a low-cost microbolometer thermal imager. ; The method was adapted into a field-deployable instrument to obtain in situ visualization of the stress concentrations present at fatigue-prone details on highway bridges subject to random truck loading. The infrared thermoelastic stress analysis (IR-TSA) system developed in this study is available for use by Virginia Department of Transportation (VDOT) district structure and bridge personnel to evaluate fatigue-prone details on existing bridges. ; VDOT plans to implement the technology to validate repairs underway at the I-64 Delta Frame Bridge in Lexington and fatigue crack arrest repairs on other steel bridges in VDOT’s inventory. Guidance will be developed on the application and practical use of the technology for incorporation into VDOT’s Manual of the Structure and Bridge Division.
Format:

PDF
Funding:

103658
Download URL:

https://rosap.ntl.bts.gov/view/dot/31615/dot_31615_DS1.pdf
File Type:

[PDF - 2.71 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:d9d5a05ac920829cfc6e30220f10e6db0f2cbec5de2ec61b144ae722a8724bc1d7e370498b399480e2244819782efac831181b8b4445de2cff0a214dd793876c

File Language:

English

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