Plankton and surface sediment samples from the Gulf of California
were analyzed to determine the present geographic distribution of silicoflagellate
species in this area. Variations in the composition of the
silicoflagellate assemblage are related to water mass distributions.
Seven species and three forms were identified in these samples. Octactis
pulchra...
The merits of the photoelastic coating technique as applied to
wood were evaluated. Comparative tests were made on 12 nominal
two-by-four Douglas Fir boards. The object of these tests was to
determine the limitations of this technique, such as accuracy and
complexity of experimental procedure. Correlation of the experimental
results...
A study of stress transfer near the ends of the whisker in a simulated whisker reinforced composite material was conducted by using
photoelastic techniques. The composite material studied was
αAl₂O₃ whiskers in an aluminum matrix. The photoelastic models
used consisted of a scaled-up macroscopic stiffener embedded in a
three-dimensional epoxy...
The stress concentration factors at butt joints in six-ply laminated
lumber were determined experimentally. Concentration factors
for a uniform tensile stress were found for a joint at each of
three possible locations.
Four experimental techniques were used and evaluated on actual
wood specimens: strain gages, brittle lacquer, moiré grids, and...
In the construction of a cab-over-engine semi tractor, Freightliner
Corporation of Portland, Oregon uses brackets to make the connection
between the front leaf spring mounts, bumper, front hinges
for the tilt-cab and the longitudinal frame rails. One bracket is used
on each side. The integrity of these brackets is essential...
