IML FRACTOMETER II Instruction Manual Download Page 5

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   

 

Aufbau des Fractometer II 

 
Im wesentlichen besteht der Fractometer II aus 5 Komponenten: 
 

-

  Hebelpaar zur Messung der Druckfestigkeit (

A

-

  Hebelpaar zur Messung der Biegefestigkeit (

B

-

  Kraftmessuhr mit Schleppzeiger (

C

-

  Probeneinspannung zur Biegefestigkeitsmessung (

D

-

  Probeneinspannung zur Druckfestigkeitsmessung (

E

-

  Wegmessuhr zur Bestimmung des Biegewinkels (

F

 

 

 

 
Zur Bestimmung eines Festigkeitskennwertes wird der Bohrkern in die 
jeweilige Einspannvorrichtung eingelegt und entsprechend seiner 
Faserrichtung ausgerichtet.  
Durch langsames kontinuierliches Bewegen des Hebelpaares wird eine 
Kraft auf den Bohrkern übertragen. Die Kraft wird so lange erhöht bis 
dieser versagt bzw. bricht. Gemessen wird hierbei die maximal 
aufgebrachte Kraft. Diese Kraft entspricht dann der Versagenslast. 

ENGLISH 

Introduction 

THE STRUCTURE OF THE FRACTOMETER II 

 
The Fractometer II consists of 6 basic components: 
 

-

  Lever for the measurement of the compression strength (

A

-

  Lever for the measurement of the bending strength (

B

-

  Measuring clock for strength with tow indicator (

C

-

  Bending Lever (

D

-

  Clamp device for core sample (

E

-

  Track measuring clock for the determination of the bending angle (

F

 

 

THE FUNCTIONALITY OF THE FRACTOMETER II 

 
For the determination of the strength value put the core sample in each 
individual clamp device and position it correctly within the fiber direction.   
Push the central lever continuously.  A force will then be transmitted to 
the clamp device and the core sample. The force is increased until the 
core sample breaks. The measurement involves the maximum force 
needed to break the core sample. This force corresponds to the 
measuring values. 

Summary of Contents for FRACTOMETER II

Page 1: ...GUARANTEE POLICY IML Instrumenta Mechanik Labor System GmbH Parkstra e 33 69168 Wiesloch Germany Phone 49 0 6222 6797 0 Fax 49 0 6222 6797 10 Website www iml de E mail info iml de FRACTOMETER II made...

Page 2: ...Procedure of the measurement Fibre direction during the bending strength measurement 4 5 Measurement of the compression strength Procedure of the measurement Fibre direction during the compression str...

Page 3: ...for The bending angle display can be examined with the test pin Bending Angle in zero position Insert the test pin into the bending device and Display link up the bending lever Read off the value of...

Page 4: ...nststoffgeh use welches ber den Zuwachsbohrer geschoben wird ist auch eine Verletzungsgefahr beim Ausdr cken der Bohrkerne weitestgehend ausgeschlosse Ejector 2 INCREMENT BORER With the use of the inc...

Page 5: ...achte Kraft Diese Kraft entspricht dann der Versagenslast F ENGLISH Introduction THE STRUCTURE OF THE FRACTOMETER II The Fractometer II consists of 6 basic components Lever for the measurement of the...

Page 6: ...n axial direction to the trunk In roots and curved trunks we will see perpendicular stress or radial tensions The radial tension strength is the resistance which the trunk opposes to a failure by perp...

Page 7: ...uchwinkelmesser 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 stren...

Page 8: ...Fractometer II is positioned counter clockwise to the zero mark Make sure that the fiber direction of the core sample is positioned parallel to the applied force that presses onto the core sample IMPO...

Page 9: ...w indicator stops with the measured value and that can be read off immediately in Mpa and or Newton units ENGLISH 7 Instruction Manual Compression Failure Compression Strength Failure Distance Point 2...

Page 10: ...are only an example Don t forget to focus on the overall structure and health of a tree Resources for Tables and Graphs Different Strengths of Green Woods G tz 2000 Research Center in Karlsruhe German...

Page 11: ...9 ENGLISH Compression Strength in Fiber Direction Tables and Graphs...

Page 12: ...he contract of purchase Please also refer to the manufacturer s General Terms of Business INSTRUCTIONS FOR UTILIZATION The user accepts the manufacture s instruction for utilization when he operates t...

Page 13: ...nclusions with respect to the examined object ex Core sample of tree will be left to the sole responsibility of the person who performs the examination The manufacturer of the instruments will not be...

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