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Connection between tensile testing machine units


Do you know in what units the tensile testing machine displays various test data during testing, such as force value, test speed, displacement or deformation? What is the conversion relationship between different units? Today we will mainly analyze the units of several important experimental data, and their relationships are as follows. For other parameter units such as voltage, power, weight, etc., which are familiar to everyone, we will not introduce them anymore.

1、 The units of force mainly include N (Newton), KN (Thousand Newton), KG (kilogram or kilogram), LB (pound), ton, etc. The most commonly used units in daily testing machines include Newton, Thousand Newton, kilogram (kilogram), and ton. The conversion between them is mainly divided into two types of Newton conversion. The conversion relationship between kilogram and Newton is as follows:

1.10KN=1000 kg=1 ton

2.1kg=9.8N (actually 9.8, and in daily applications of testing machines, the calculation method of 1kg=10N is usually used for ease of calculation)

2、 The unit of common test space is expressed in millimeters (mm). For vertical tensile testing machines, the test space is not very large. Conventional models are usually 600 or 1000 millimeters, but for special models such as testing pipes, it can reach 3000mm. The test space of a horizontal tensile machine can also reach several tens of meters, but regardless of the number of meters, the unit is usually expressed in millimeters, which may be related to the unit of test speed of the testing machine.

3、 The common unit of velocity for testing machines is mm/min, which mainly represents the relationship between time and displacement. It is the most common unit of displacement velocity in the testing machine industry. For the standards of test speed, KN/S (loading speed) refers to the change in load per unit time, and Mpa/s (stress speed) refers to the change in stress per unit time. Especially, the conversion between mm/min and KN/S is not possible, as they refer to different control methods. mm/min refers to the lifting speed of the beam, while KN/S is related to the material of the sample. If there is a special need to use KN/S units, technical personnel should communicate clearly.

In addition, the testing machine and hydraulic universal testing machine also follow the above units and relationships when representing them.