Degree Type

Thesis

Date of Award

2008

Degree Name

Master of Science

Department

Mechanical Engineering

First Advisor

J. Adin Mann, III

Second Advisor

Thomas J. Rudolphi

Third Advisor

Michael B. Pate

Abstract

The space shuttle, Columbia had a suitcase piece of the SOFI strike the wing of the shuttle causing its demise. Detection methods were evaluated to detect defects in the foam. One of the methods being free field acoustics was explored. Previous works were done in this area, and it showed promise as it was able to detect defects. However all defects or the defects that had significance to the eye was not detected. The method developed before is looked into and was improved upon addressing the problems. Developing a baseline curve and region to compare the data would be two of things needed to be implemented. In essence an automated process (program) was developed to be more sensitive in the detection of flaws in the sample. Also developing stopping conditions is important for the process to properly detect the defects. Due to the improvements, all the defects on the mapping of the sample were located.

DOI

https://doi.org/10.31274/rtd-180813-16069

Publisher

Digital Repository @ Iowa State University, http://lib.dr.iastate.edu/

Copyright Owner

Gregory Stargell

Language

en

Proquest ID

AAI1453059

OCLC Number

236486265

ISBN

9780549540885

File Format

application/pdf

File Size

80 pages

Share

COinS