| !'!
C)
3.2.2 Experiment Installation
Fig.27 shows the general relation between
REH 200 type
NG ___Universal testing machine
the REH 200 type universal testing machine, FAC ,
DPA or
; | 8i |
I.I. 5 stereo-camera and the test Specimen of EB |
; : ; ; s Test piece of |
the wide-flange. The testing machine is an oil = wide frange
ee
I.1.S. stereo camera
pressure type and can bear at the maximum up — © 9
to 200 ton loads. The size of test Specimen Fig. 27 General View of Photographing
of the wide-flange is JIS. G3192 H-300x150
(Depth=300 mm, Width=150 mm, Web
thickness=6.5 mm, Flange thickness=9mm).
Photo.15 shows the general view of the test
specimen with the pressure plate, on which a
special metallurgical finish was applied on both
sides. Stereo-photographs are taken under
loading conditions of 0, 60, 100, 110, 120, 130,
135, 140, 142, 144, 128, 121 and 110 tons. Pressure
loading decreases artificially after 110 tons and
drops to the last condition where the pressure
needle shows the zero-reading. Under this
condition, a pair of photographs are taken again as
Photo. 15 General View of the
Test Specimen with
Pressure Plate
the stereo-model. For easily taking measure-
ments of the surface of specimens, white grid lines of 2. 4 cm were painted in both
longitudinal and lateral directions for determining the measurement points.
3.2.3 Results of Measurement
Several pairs of photographs under loading conditions of 0, 144, 128, 110 tons
and the last 0 ton are selected for the measurement of deformation at the intersection
pts. of the grid. Especially for the central parts where the maximum deformation
occurred a loading-deformation diagram was completed to form X-Y, Y-Z and
X-Z planes. Photo. 16-18 show the general view of deforming of the wide flange under
27 -