Tensile Strength Test Under Axial Load

Axial tensile testing is a test method for determining the behavior of materials under axial tensile loads. During these tests, the fastener is first fixed to the test apparatus and then a force is applied to the fastener by separating the test machine cross heads.

Tensile testing is a destructive testing process that provides information on the tensile strength, yield strength and ductility of metallic material. With this test, the force required to break a composite or plastic sample and how long the sample stretches to that breaking point are measured.

Tensile testing of composites is generally in the form of basic tension or flat-sandwich tension testing in accordance with the following standards:

• ISO 527-4 Plastics - Determination of tensile properties - Part 4: Test conditions for isotropic and orthotropic fiber-reinforced plastic composites
• ISO 527-5 Plastics - Determination of tensile properties - Part 5: Test conditions for unidirectional fiber-reinforced plastic composites
• ASTM D3039/D3039M-08 Standard test method for tensile properties of polymer matrix composite materials
• ASTM C297/C297M-16 Tensile test for sandwich panels

To determine the tensile strength of threaded fasteners under axial load, the following standard developed by the International Organization for Standardization (ISO) is also followed: ISO 3800 Threaded fasteners - Axial load fatigue test - Test methods and evaluation of results. This standard describes the conditions for conducting the tests and recommendations for evaluating the results. Unless otherwise agreed, the tests are of the alternating stress type and are performed at room temperature. The effect of the compatibility of the clamped parts on the stress of the fastener is not taken into account. Test results may be affected by the test conditions. Therefore, minimum requirements are specified to reduce this effect.

Among the mechanical tests applied to determine possible shape and size changes of materials under a given load, tensile strength tests are included. These tests are performed to determine the plastic and elastic strength of materials under static load. For this purpose, the sample is attached to a tensile testing machine and axial and variable forces are applied.

Our organization also provides tensile strength test services under axial load, with its trained and expert staff and advanced technological equipment, among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors.