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Full-Text Articles in Engineering
High-Resolution Methods For Measuring The Thermal Expansion Coefficient Of Aerospace Materials, G. Wallace, W. Speer, J. Ogren, Omar S. Es-Said
High-Resolution Methods For Measuring The Thermal Expansion Coefficient Of Aerospace Materials, G. Wallace, W. Speer, J. Ogren, Omar S. Es-Said
Mechanical Engineering Faculty Works
Accurately predicting the coefficient of thermal expansion for many aerospace components is critical to ensure proper functionality on orbit where the temperature gradient across a spacecraft can vary from +300 degrees F to -450 degrees F. Under these conditions, the linear approximations generated by theoretical equations no longer hold true, and experimental methods are needed. Although several methods exist for measuring the coefficient of thermal expansion of materials, laser interferometry yields high-resolution results, and the technique is widely accepted in the scientific community.
Design Of Multistep Aging Treatments Of 2099 (C458) Al-Li Alloy, M. Romios, R. Tiraschi, C. Parrish, H. W. Babel, J. Ogren, Omar S. Es-Said
Design Of Multistep Aging Treatments Of 2099 (C458) Al-Li Alloy, M. Romios, R. Tiraschi, C. Parrish, H. W. Babel, J. Ogren, Omar S. Es-Said
Mechanical Engineering Faculty Works
Multistep artificial aging treatments coupled with various natural aging times for aluminum lithium 2099 alloy (previously called C458) are discussed to obtain mechanical tensile properties in the T6 condition that match those in the T861 condition, having a yield strength in the range of 414-490 MPa (60-71 ksi), an ultimate strength in the range of 496-538 MPa (72-78 ksi), and 10-13% elongation. Yield and ultimate tensile strengths from 90-100% of the strength of the as-received material (in the T861 condition) were obtained. The highest tensile strengths were consistently obtained with two-step, low-to-high temperature artificial aging treatments consisting of a first …
The Tribological Role Of Energy Efficiency Within Society, Matthew Siniawski
The Tribological Role Of Energy Efficiency Within Society, Matthew Siniawski
Mechanical Engineering Faculty Works
No abstract provided.