Guides of Tensile Tester

What is a tensile tester?

tensile tester machine is also called universal material testing machine. It is an indispensable testing machine for material development, physical properties test, teaching research, quality control, etc. The tensile tester fixture is an important part of the instrument, and different materials require different fixtures, which is an important factor in the smooth conduct of the test and the accuracy of the test results.Mainly used for a variety of materials for static load, tensile, compression, bending, shear, tear, peel and other mechanical properties of the test machine, suitable for plastic plates, tubes, profiles, plastic film, rubber, steel, fabric and other materials of various mechanical properties test. 


Tensile tester drive method


1.Mechanical tensile tester


Mechanical tensile tester is mainly driven by the motor spiral screw rotation, the screw rotation drives the fixture up and down to achieve the tensile tester tensile, compression peel, tear, shear, three-point bending resistance and other functions, the advantage is the high precision control.


Mechanical universal tensile tester mainframe for single rod structure or door structure, mainly suitable for rubber, plastic, textile, geotextile, waterproof material, wire and cable, net rope, metal wire, metal bar, metal plate and other materials tensile test, increase the attachment can do bending, tearing, peeling and other tests.


Wide range of force measurement, between 0.4% and 100% of the full range, the accuracy of force measurement can reach 0.5 grade.

Test speed range can be adjusted, test speed can be 0.001mm/min-1000mm/min, test stroke can be determined according to needs, more flexible.

Flexible test methods: test fixtures can be freely selected and replaced for models with a test range below 300kN, and external sensors and corresponding fixtures can be extended to meet different types of material mechanics tests (e.g. tensile, compression, bending, peeling, tearing, shearing, pulling and twisting tests).

Servo motor drive, compact structure, high efficiency of energy use, easy to use and maintain, low noise, stable and reliable.

Three closed-loop controls for load control, strain control and displacement control can be achieved.

High temperature ovens, high and low temperature chambers or other environmental chambers can be added for environmental simulation tests.


2.Hydraulic type tensile tester


The hydraulic type tensile tester machine price is driven by hydraulic cylinders moving up and down to move the fixture up and down to achieve the various functions of the pulling machine. The advantage is that it can do higher strength tensile testing, the disadvantage is that the control precision is not high and not very hygienic. It is mainly applied to metal materials, bridge bearings, large plates, construction materials, composite materials and other industries. Its load is generally above 300KN.


Working principle: the motor drives the oil pump to rotate, oil pump suction oil, converting mechanical energy into hydraulic oil pressure energy. The hydraulic valve realises the direction, pressure, flow regulation by the integrated block, through the external pipeline transmission to the hydraulic machinery cylinder or oil motor, so as to control the hydraulic machine direction change, the size of force and speed, to promote the hydraulic machinery to do work.


Hydraulic oil source needs to be equipped with a cooling system (air-cooled or water-cooled), high energy consumption.

Hydraulic tensile tester on the foundation requirements are very high, especially the large force value of the machine, the foundation needs to be prepared in accordance with the drawings provided by the testing machine manufacturer, the whole machine occupies a large space.

Hydraulic drive, strong power, more reliable and stable when doing large tonnage material mechanics test.

Hydraulic portable tensile tester, limited by the configuration of the oil source, the test speed is low.

Compared with the tensile tester, the small tonnage (<300kN) comprehensive cost performance is low and scalability is poor.

The servo valve requires high filtration precision for the hydraulic oil of the oil source, and the hydraulic oil needs to be replaced regularly.

The hydraulic connection lines and joints are prone to oil leakage and the oil source is relatively noisy.


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