The force, temperature, and time relationships were
investigated by using oscilloscope measurement techniques. Force was measured using a strain gage and the dynamic
response recorded with a polaroid oscilloscope camera.
Temperature was measured with a tungsten-rhenium thermocouple
and recorded in the same manner. Residual stress
measurements were made to determine...
This thesis presents the creep properties and the relations
between stress and strain of "Expanded 460KV", "Chukar" and
"Drake" conductors. The basic theories of the effect of load,
material, and temperature on the conductor are also briefly
discussed.
The long time creep curve of a conductor appears as a
straight...
A multivariable model describing the system response
(weld tensile strength of 6061-T6 aluminum) of a percussive
stud welding system as a function of five natural
(external) system variables was developed. The five natural
system variables were 1) static weight of the drop-shaft (W), 2) initial stud base height (H₀), 3)...
The base Al-Zn superplastic alloy was investigated at 250°C to
determine the effect of small amounts of magnesium on mechanical
properties. Six alloys of nominal composition 0.00, 0.10, 0.25,
0.50, 0.75, and 1.00 weight percent magnesium, constant 78 weight
percent zinc, and variable 21 to 22 weight percent aluminum were...
A market survey of aluminum users' purchasing
policies and the concept of opportunity costs are combined
in a quantitative decision model designed to
assist aluminum suppliers' efforts in directing products
and services improvements.
The opportunity cost, as the percentage of business
forgone, is determined for seven criteria representing
the products...
Wheat varieties of differential tolerance to Al were used in a
series of nutrient solution experiments to study the inhibitory effects
of Al on growth and nutrient uptake. The pH and the Al and P concentrations
were rigorously maintained to prevent the confounding
effects of Al and P precipitation and...
This report is one of a series issued in cooperation with the ANC-23 Panel on Composite Construction for Flight Vehicles of the Departments of the Air Force, Navy, and Commerce.
The thesis was an investigation into the mechanism of precipitation
from solid solution in an Aluminum-0.7% Magnesium-0.6%
Silicon alloy containing iron impurities. Laue x-ray diffraction patterns
were obtained from solution heat treated and aged single crystal
specimens in various crystallographic orientations. Precipitation
related streaking was detected on some of the...