Tear Strength: Definition, Relation to 3D Printing, Formula, Unit, and How to Measure
Tear Strength is an important property for evaluating the performance of a material. It is a measure of resistance to tearing or splitting along a plane. It is related to the tensile strength of the material and can be used to determine the extent of damage from tearing, as well as the load-bearing capacity of a material. Tear Strength is also commonly used in the 3D printing industry, where it is used to evaluate the structural integrity of printed components.
Definition
Tear Strength is defined as the amount of force required to cause a material to tear or split along a plane. It is related to the tensile strength of a material, which is the amount of force required to cause a material to stretch or elongate. Tear Strength is measured in units of force per unit area, or a Newton per square meter (N/m2).
Relation to 3D Printing
Tear Strength is an important property for 3D printing. In this process, a 3D object is created by depositing successive layers of material to build up the object. The tear strength of the material used for 3D printing determines the structural integrity of the printed component and helps to ensure that it is strong enough to withstand any mechanical stress it may experience. As the layers are not fused together, the tear strength of the material must be sufficient to hold the layers together in order for the component to maintain its shape.
Formula
The formula for calculating the tear strength of a material is:
Tear Strength = Force applied to the material / Cross-sectional area of the material
Unit
The unit for measuring tear strength is the Newton per square meter (N/m2). This is also referred to as the Pascal (Pa), which is the SI unit of pressure.
How to Measure
Tear Strength can be measured using a variety of methods. One of the most common methods is the Elmendorf tear test. This test involves applying a constant force to a specimen of the material being tested until it tears. The force and the cross-sectional area of the specimen are then used to calculate the tear strength.
Another method for measuring tear strength is the tongue tear test, which is also known as the tongue-and-groove tear test. This test involves placing a sample of the material between two plates and then applying a force to the plates until the material tears. The force and the cross-sectional area of the specimen are then used to calculate the tear strength.
Tear Strength is an important property for evaluating the performance of a material, and is particularly important in the 3D printing industry. It is measured in units of force per unit area and can be calculated using the formula provided above. It can also be measured using the Elmendorf tear test or the tongue-and-groove tear test..