Note: It is important that the red tow indicator of the Fractometer II
is positioned clockwise to the zero mark.
ENGLISH
Instruction Manual
5
For the measurement of the bending strength the 2 levers are pushed
together as long as it takes to break the core sample; During that time
one should make sure to focus on the pointer of the protractor where
the bending angle of the core sample can be read of the scale.
With the ring of the breaking angle measurement device the angle
Measurement can be adjusted to zero (neutral point adjustment).
Biegehebel
Bruchwinkelmesser
When measuring the radial bending moment the core sample fails first on
the tension side. Therefore the radial bending strength can be used as a
measurement for the radial tension strength. The result can be read off the
tow indicator. The yellow scale on the outside indicates the mechanical
property in Mpa (mega Pascal); the internal blue scale displays the applied
strength in Newton Units.
IMPORTANT NOTE:
The pointer that measures the bending break angle does not stop when
the core sample breaks; Therefore, it is important to focus on the pointer
during the bending process!
Scale for Bending
Strength Measurement
(left side)
Biegehebel
Breaking angle measurement device
Scale for
Compression
Strength
Measurement
(right side)
Bending lever
