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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Microstructure-property relationships of SiC fibre-reinforced borosilicate glass

Shin, Dong-Woo January 1993 (has links)
No description available.
2

The development of impact toughness and resistance to slow crack growth in modified polyvinyl chloride and polyethylene pipe grade polymers

Ingham, Edward John January 2003 (has links)
No description available.
3

A study of coarse grain heat affected zone of accelerated cooled structural steels

Araujo, C. L. D. January 1990 (has links)
No description available.
4

The influence of elemental segregation on cleavage initiation in ferritic steels

Franklin, Rachel E. January 1990 (has links)
No description available.
5

Microstructure and continuous cooling transformation of C-Mn-Ni and C-Mn-Ni-Mo weld metals

Zhang, Zhuyao January 1994 (has links)
No description available.
6

Fracture characteristics of coarse grained ceramics

Browne, David J. January 1989 (has links)
No description available.
7

The toughness of high strength aluminium alloys

Cai, Huasu January 1991 (has links)
No description available.
8

The effects of metastable zirconia on the properties of ordinary Portland cement

Chyad, Fadhil Attiya January 1989 (has links)
No description available.
9

Fracture Toughness: Evaluation of Analysis Procedures to Simplify JIC Calculations

Battiste, Thomas Joseph 01 May 2010 (has links)
The purpose of this study is to determine if there is an alternative analysis method that can provide an estimate of fracture toughness for specimens that failed to meet all of ASTM E 1820 requirements. This study will look at three alternative analysis methods and evaluate each method’s ability to accurately and easily estimate the elastic-plastic fracture toughness. The standard method of analysis is long and complicated which leads to a number of validity requirements that many tests fail to meet. The objective is to find an easier and reasonably accurate estimate of elastic-plastic fracture toughness. This study has shown that there are two useful means of directly measuring the toughness from the load versus displacement record. It has also shown that there is a method of substituting a linear regression for the power law regression which yields good estimates of fracture toughness. All three methods have been estimating JQ which is a provisional measure of elastic-plastic fracture toughness. The first direct method uses an integral of the area up to the maximum load point to acquire the JQ. The second direct method uses a conversion of the linear elastic fracture toughness which only uses the crack growth and the maximum load from the load versus displacement record. The final method substitutes a linear regression of the two J-R points on either side of the JQ line to determine the JQ point. Each alternative analysis was able to acquire J values with varying degrees of accuracy. The linear substitution was the most accurate. The first direct method using an area integral tended to over predict the true J value. The second direct method using a conversion formula had a tendency to under predict the true J value. None of these methods could substitute for the ASTM standard; however, each provided a usable estimate of elastic-plastic fracture toughness.
10

Fracture Toughness: Evaluation of Analysis Procedures to Simplify JIC Calculations

Battiste, Thomas Joseph 01 May 2010 (has links)
The purpose of this study is to determine if there is an alternative analysis method that can provide an estimate of fracture toughness for specimens that failed to meet all of ASTM E 1820 requirements. This study will look at three alternative analysis methods and evaluate each method’s ability to accurately and easily estimate the elastic-plastic fracture toughness. The standard method of analysis is long and complicated which leads to a number of validity requirements that many tests fail to meet. The objective is to find an easier and reasonably accurate estimate of elastic-plastic fracture toughness. This study has shown that there are two useful means of directly measuring the toughness from the load versus displacement record. It has also shown that there is a method of substituting a linear regression for the power law regression which yields good estimates of fracture toughness. All three methods have been estimating JQ which is a provisional measure of elastic-plastic fracture toughness. The first direct method uses an integral of the area up to the maximum load point to acquire the JQ. The second direct method uses a conversion of the linear elastic fracture toughness which only uses the crack growth and the maximum load from the load versus displacement record. The final method substitutes a linear regression of the two J-R points on either side of the JQ line to determine the JQ point. Each alternative analysis was able to acquire J values with varying degrees of accuracy. The linear substitution was the most accurate. The first direct method using an area integral tended to over predict the true J value. The second direct method using a conversion formula had a tendency to under predict the true J value. None of these methods could substitute for the ASTM standard; however, each provided a usable estimate of elastic-plastic fracture toughness.

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