Introduction to the measurement error and characteristics of electronic universal testing machine

The electronic universal testing machine has the characteristics of compact structure and simple and easy to use, and can be used for tensile, compression, bending, shear, peeling, tearing and other force tests with a maximum load of 10kN. So do you know that there will be measurement errors when using it? Today, the editor will tell you about the measurement errors and characteristics of the electronic universal testing machine. Let’s take a look.

one, measurement error of electronic universal testing machine

1. Main unit: Due to the inadequate installation of the main unit, the working piston and the working cylinder wall will cause friction, resulting in errors. It generally manifests as positive differences, and as the load increases, the errors generated gradually become smaller. To avoid errors, first check whether the test machine is installed horizontally and level the main machine with a frame-type horizontal ruler in two directions where the outer rings of the working cylinder (or column) are perpendicular to each other.

2. Force gauge part: When the force gauge part is not installed horizontally, friction will occur between the swing shaft bearings, which is generally manifested as a negative difference. Adjust the front and back levels of the dynamometer on the front and back of the swing rod, align the edge of the swing rod with the inner line, and adjust the left and right levels of the body with a horizontal ruler against the side of the swing rod.

2. Characteristics of electronic universal testing machine

1. Because of the use of imported servo motors, servo speed regulation systems and ball screws, the electronic universal test machine has stable transmission, low noise, high speed accuracy, wide speed regulation range and long service life.

2. Synchronous display of test force, peak, displacement, speed, experimental status, and test curve

3. Limit, automatic protection of overload, automatic shutdown of sample break

4. Stability: resistance to fluctuation, zero point drift, power supply suppression ability, interference resistance, temperature drift, time drift, and humidity resistance.

For universal testing equipment, it covers almost all industries of testing applications, so it is also called "universal". Today we will briefly introduce several applications:

Auto parts:

Rubber products on automobiles, including floor rubber, rubber on electronic components, key components on rubber products (brake tubes, brake leather bowls, brake pads, seals, etc.)

plastic:

Detection of mechanical properties such as the tensile elastic modulus, bending elastic modulus, compression modulus, yield strength, tensile strength, breaking strength, elongation of break, compression stress, compression strain, shear, peeling, support, tearing, penetration and other mechanical properties of thermoplastics. Mainly include material analysis and inspection of engineering plastics, reinforced nylon, modified plastics, plastic profiles, plastic pipes, plastic sheets and films in industries such as engineering plastics, reinforced nylon, modified plastics, plastic profiles, plastic pipes, and plastic sheets.

Construction Steel:

Rebar (steel plate), steel pipe, cast iron pipe, steel bar connection joints, welds and deposited metals, aluminum alloy types, carbon structural steel, elongation detection low-carbon steel hot-rolled disc strip yield strength, steel wire for elongation prestressed concrete, steel strand for elongation prestressed concrete, and elongation steel bar welded under maximum force.

The main unit of the electronic universal test machine adopts high-precision linear guide rail guide, which has high rigidity and good linear motion characteristics. The optional load sensors of different ranges can provide accurate measurement data for samples such as fibers ranging from microns to structural parts that are large to full load. In addition, the rich accessories such as fixture tools, deformation measurement can almost meet all customer needs.

The above is the introduction to the measurement error and characteristics of the electronic universal testing machine introduced by the editor. I hope it can help you.