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Using ultrasonic techniques to predict fracture toughness of AISI 4137 alloy steel
| dc.creator | McGrath, Scott Phillip | |
| dc.date.accessioned | 2012-06-07T22:49:34Z | |
| dc.date.available | 2012-06-07T22:49:34Z | |
| dc.date.created | 1997 | |
| dc.date.issued | 1997 | |
| dc.identifier.uri | https://hdl.handle.net/1969.1/ETD-TAMU-1997-THESIS-M325 | |
| dc.description | Due to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to digital@library.tamu.edu, referencing the URI of the item. | en |
| dc.description | Includes bibliographical references. | en |
| dc.description | Issued also on microfiche from Lange Micrographics. | en |
| dc.description.abstract | Previous studies have indicated the possibility of using ultrasonic attenuation as a nondestructive tool for predicting fracture toughness of metals. In all these studies, the fracture toughness was varied by changing the microstructure or composition. In the present paper, ultrasonic attenuation measurements and an ultrasonic frequency spectrum analysis were conducted on a sample of constant microstructure (AISI 4137 steel) in which the fracture toughness is changed through a tempering process. Results show that within the frequency range considered, frequency dependence on attenuation does not correlate with changes in fracture toughness. Using the frequency spectrum analysis technique, however, possible correlations were found between the upper half power point on the FFT (Fast Fourier Transform) output and the fracture toughness values, in conjunction with the yield strength. | en |
| dc.format.medium | electronic | en |
| dc.format.mimetype | application/pdf | |
| dc.language.iso | en_US | |
| dc.publisher | Texas A&M University | |
| dc.rights | This thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries in 2008. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use. | en |
| dc.subject | mechanical engineering. | en |
| dc.subject | Major mechanical engineering. | en |
| dc.title | Using ultrasonic techniques to predict fracture toughness of AISI 4137 alloy steel | en |
| dc.type | Thesis | en |
| thesis.degree.discipline | mechanical engineering | en |
| thesis.degree.name | M.S. | en |
| thesis.degree.level | Masters | en |
| dc.type.genre | thesis | en |
| dc.type.material | text | en |
| dc.format.digitalOrigin | reformatted digital | en |
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