Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


ucin1337718046.pdf (770.13 KB)

ETD Abstract Container

Abstract Header

Potential drop detection of creep damage in the vicinity of welds

Prajapati, Seeran
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1337718046

Abstract Details

2012, MS, University of Cincinnati, Engineering and Applied Science: Aerospace Engineering.
Recent research studies indicated that directional Alternating Current Potential Drop (ACPD) measurements could be exploited for nondestructive evaluation (NDE) of creep damage. Unfortunately, creep damage is often concentrated in welded sections where the inspection is less straightforward. In this work, a directional square-electrode ACPD probe with spring-loaded contact pins was used to evaluate different levels of creep damage in the vicinity of weldments. The electric transfer resistance is measured in two orthogonal directions to detect creep-induced material damage. This is particularly difficult close to weld/base-metal interfaces because the electric conductivity might changes significantly from one side of the interface to the other and therefore exhibit an apparent anisotropy caused by the influence of the boundary. The feasibility of directional ACPD evaluation of creep damage in the vicinity of such transition regions was studied by experimental, analytical, and numerical means. FE simulations validated the analytical predictions and experimental observations and offered an opportunity to further investigate critical effects, such as the inclination angle of the interface relative to the surface.
Peter Nagy, PhD (Committee Chair)
Gui-Rong Liu, PhD (Committee Member)
Francesco Simonetti, PhD (Committee Member)
74 p.
Electromagnetism
ACPD; Creep Damage; Weld; ; ; ;

Recommended Citations

Citations

  • Prajapati, S. (2012). Potential drop detection of creep damage in the vicinity of welds [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1337718046

    APA Style (7th edition)

  • Prajapati, Seeran. Potential drop detection of creep damage in the vicinity of welds. 2012. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1337718046.

    MLA Style (8th edition)

  • Prajapati, Seeran. "Potential drop detection of creep damage in the vicinity of welds." Master's thesis, University of Cincinnati, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1337718046

    Chicago Manual of Style (17th edition)

ucin1337718046
1,009
© 2012, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.