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Articles 1 - 5 of 5

Full-Text Articles in Engineering

Pile Driving Analysis In Selected Egyptian Soil Deposits, Yasser Abd Elhamid Gowayed Jun 1989

Pile Driving Analysis In Selected Egyptian Soil Deposits, Yasser Abd Elhamid Gowayed

Archived Theses and Dissertations

No abstract provided.


Characterization Of Zirconia Gels And Their Selectivity Towards Metal Ions, Manal Mohamed Talaat El- Saidi Jun 1989

Characterization Of Zirconia Gels And Their Selectivity Towards Metal Ions, Manal Mohamed Talaat El- Saidi

Archived Theses and Dissertations

No abstract provided.


Using Living Materials To Intervene In The Natural Succession Process To Accelerate The Re-Development Of A Self-Sustaining Ecosystem That Has Been Damaged By Human Intervention, Eric Jorgensen Jan 1989

Using Living Materials To Intervene In The Natural Succession Process To Accelerate The Re-Development Of A Self-Sustaining Ecosystem That Has Been Damaged By Human Intervention, Eric Jorgensen

Materials Engineering

No abstract provided.


Nonlinearity Parameters Of Polymers, Meng-Chou Wu Jan 1989

Nonlinearity Parameters Of Polymers, Meng-Chou Wu

Dissertations, Theses, and Masters Projects

Three types of acoustic nonlinearity parameters for solids are discussed. The results of measurements of these parameters for three polymers--polymethyl methacrylate, Polystyrene, and polysulfone--are presented.;The author has developed a new technique, using piezoelectric transducers directly bonded to the specimens, which allows the measurements of fundamental and second harmonics generated in the solids, and thereby the determination of nonlinearity parameter {dollar}\beta\sb3{dollar}, which is the ratio of a linear combination of second- and third-order elastic coefficients to the second-order elastic coefficient.;The second nonlinearity parameter, B/A can be determined from the temperature and pressure derivatives of the sound velocity. We derive its exact …


Relationships Between Chemistry Variations And The Morphology And Nodular Formation Of Carbon Nodules In Ductile Cast Iron, Donald Francis Cassel Jan 1989

Relationships Between Chemistry Variations And The Morphology And Nodular Formation Of Carbon Nodules In Ductile Cast Iron, Donald Francis Cassel

Dissertations and Theses @ UNI

The purpose of this study was to determine what relationships exist between the chemistry and the morphology and nodular formation of carbon nodules in commercially produced ductile cast iron. Additionally, the effects of chemistry on the hardness of produced castings from net shake processes were investigated. According to pertinent information in current literature, the hardness of castings has a direct bearing on the final cost of products.

The method of gathering this information and developing a correlation between the chemistry variations and the morphology and nodular formation was facilitated by the cooperation of a commercial producer of ductile cast iron …