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The coefficient of friction is a dimensionless variable that is useful in characterizing a material’s frictional properties. COF measurement is frequently performed for plastic films, sheeting, lubricants, paper, etc.
The coefficient of friction is a dimensionless variable that is useful in characterizing a material’s frictional properties. COF measurement is frequently performed for plastic films, sheeting, lubricants, paper, etc. Test data are dependent on the surface properties of materials like the sample’s surface cleanliness, roughness, surface energy, and the sliding angle. It is an important parameter that is crucial for product design, manufacturing, and evaluating a product’s performance.
COF is a measure of the frictional forces between two surfaces when in contact. The static COF is the necessary force to initiate motion between the two surfaces. The kinetic COF is the resistance to movement between the materials after they are set in relative motion. ASTM D1894 is the most frequently used testing standard while custom testing and equipment are available.
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Our material testing labs regularly provide the coefficient of friction (CoF) measurement services for plastic films, sheeting, lubricants, paper, and other materials.
The coefficient of friction (CoF) is a measure of the frictional forces between two surfaces when in contact. The static COF is the necessary force to initiate motion between the two surfaces. The kinetic COF is the resistance to movement between the materials after they are set in relative motion.
COF measurement is frequently performed for plastic films, sheeting, lubricants, paper, etc. . It is a crucial parameter that is used during product design, manufacturing, and evaluating a product’s performance.
The value of COF ranges from 0-1. Lower COF values indicates lower resistance to sliding.
The below equation is used to calculate COF:
COF = Frictional force / Normal force
The frictional force resist the motion of the two surfaces in contact while the normal force presses the two surfaces together.
As COF is the ratio of frictional force to the normal force and the value of frictional force rarely exceed the normal force, COF must be between 0 and 1.
Coefficient of static friction is the ratio of the maximum static friction force present between the surfaces before movement to the normal force.
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