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3. Some Examples of Actual Use of the I. 1. S,New Stereo-Camera
Experimental work for the measurement of objects in motion using the I. I. S.
Stereo- Camera is accomplished.
The following subjects are introduced:
(1) measurement of automobile tire deformation in motion.
(2) measurement of plastic buckling of steel member with wide-flange section
Discussed here is the purpose of the experiments, method of measurement,
accuracy obtained by this approach, results and observations on these results,
3.1 Measurement of Automobile Tire Deformation during in Motion.
On tracing the shape of troid shell structure like tires in motion and measuring
the deformation under its load, the numerical data are mainly deduced from the
experimental approach, because the theoretical procedure contains many difficulty.
Especially, measurement of deformation in motion which are for determining the
change in form and shape, and for determing deformation during cornering and
braking, is impossible even in the experimental approach. The authors have
camera for measuring the tire deformation and its change in motion. These studies
for their transient deformation behaviours give us a very important clue for the
tire designing techniques which are neces sary in developing high performance
tires in future.
3.1.1 Experiment Installation
Fig.9 and Fig.10 show the generàl relation between the tire, the drum machine
and the stereo-camera at the laboratory. The testing machine consists of a drum
with a diameter of 1, 59 m (5m in circumference). Outer surface of the steel drum
is finished smooth. The test tire is Pressed on the drum with its dead weight
and rotates at any desired
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I. L.S. Stereo Camera Drum
Fig. 9 Plane View of Installation in Fig. 10 Sketch of Photographing
Photographing
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