Force Laboratories

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Force Laboratories consist of three sub divisions, so their names are Force, Hardness and Torque Laboratories. Services provided by the laboratories and their area of work can be summarized as follows:

FORCE LABORATORY

Standard forces are obtained fundamentally on the base of static force measurement principle, corresponding to Newton's 2nd law (F=m.g). The systems which generate the forces by using this principle, called as Force Standard Machines (FSM). Dead weights, hydraulic amplification, lever amplification and multiple transducer system are varieties of force standard machines. National force scale is established considering to all these measurement system. These types of systems are used for calibration of force measuring devices (i.e. proving rings, dynamometers, load cells, force transducers). The term, force measuring device; defines the whole including component which is elastically deformed when load or force applied on it and systems enable us to read this deformation mechanically or electrically.

Today, national force scale of Turkey is established in between the range from 0,5 N up to 3000 kN. Force Laboratory, realizes the whole force measurements in primary level, Laboratory calibrates force proving instruments on tensile and compression modes liable to do the duties mentioned below.

Technical Properties of TÜBİTAK UME Force Standard Machines

Measurement Range

Measurement Uncertainty

Type of Force Standard

Machines (FSM)

0.5 N - 200 N

2 x 10-5

Dead weight FSM

20 N - 600 N

2 x 10-5

Dead weight FSM

100 N - 11 kN

2 x 10-5

Dead weight FSM

2 kN - 110 kN

2 x 10-5

Dead weight FSM

20 kN - 1100 kN

1 x 10-4

Lever amplification with dead weight FSM

50 kN - 3 MN

5 x 10-4

Built-up hydraulic FSM

 

 

HARDNESS LABORATORY

Hardness is a widely used material property and it is defined as the resistance which a material shows against static or dynamic loading conditions. When hardness is measured in accordance with this definition, the material is deformed under standardized conditions and size of the deformation is measured. The measurement principle is the smaller deformation the harder the material.

The most frequently and widely used hardness scales are Rockwell, Brinell and Vickers scales for metallic materials and Shore and IRHD for plastic and rubber materials. These measurement procedures are based on static force application. Behaviour of the material against loading under dynamic conditions is studied with dynamic hardness measurement procedures.

UME Hardness Laboratory, like other metrological fields, constitutes the national hardness scale and provides its propagation to industry and other users requiring it. Hardness reference blocks are calibrated in Rockwell, Brinell and Vickers hardness scales by making use of primary hardness standards with highest accuracy in UME Hardness Laboratory

TÜBİTAK UME Hardness Measurement and Calibration Standards

Device Name

Scales

Uncertainties

Rockwell Hardness Standard Machine

HRA - HRK,

HRN, HRT

0,5 HRA, HRC, HRD; 1,0 HRB

Brinell-Vickers Hardness Standard Machine

HV5 – HV100

 

HBW1/5

HBW1/10

HBW2,5/15,625

HBW5/25

HBW1/30

HBW2,5/31,25

HBW2,5/62,5

HBW5/62,5

HBW10/100

HBW5/125

HBW2,5/187,5

HBW10/250

HBW5/250

HBW10/500

HBW5/750

HBW10/1000

HBW10/1500

HBW10/3000

1 %

Micro-vickers Hardness Calibration Machine

HV 0,05 - HV 2

1 %

Indentation Measurement System

0,02 mm - 10 mm

0,2 mm

Rockwell and Vickers Hardness Indenter Calibration System

120º and 136º Angle,

0,2 mm Radius

Angle: 0,05º,

Radius:1 mm

 

TORQUE LABORATORY

The aim of the torque laboratory is the realization and maintenance of primary torque standards and the establishment of the national torque scale to transfer to industries. The primary level torque standard of our country was established with the 1000 N.m TÜBİTAK UME dead weight torque standard machine, by which torque measuring devices are calibrated by the TÜBİTAK UME Torque Laboratory.

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