NEW: SEAL FRICTION TEST ACCORDING TO

STELLANTIS LP.7M081 STANDARD

The Plastlab laboratory is pleased to announce that it will soon be equipped to perform a new Seal Friction Test according to the Stellantis LP.7M081 standard.

Application:

Determination of friction characteristics.

Test objectives:

Verify and measure static and dynamic friction* coefficients, and the stick-slip* phenomenon.

The stick-slip effect is calculated by examining the slip graph through the combination of the x- and y-axis displacement and force quantities.

*Dynamic friction is the force acting on a body moving on a surface: if the kinetic friction force is greater than the external force, the body will eventually stop; if it is equal, the body will move in a uniform rectilinear motion.

*The stick-slip test is a test used to study the behavior of two surfaces in contact as they move relative to each other, generating friction that alternates between sticking and slipping. This phenomenon can cause vibrations, noise, and wear, and is important in various fields, such as mechanics, materials engineering, and even seismology.

Stick-slip is a mechanical phenomenon involving sliding friction, caused by spontaneous motion and characterized by violent accelerations occurring between two surfaces in sliding contact.

When there is an abrupt transition from static friction (which prevents relative motion between surfaces) to dynamic friction (which acts on their sliding), and therefore static friction (which is greater than dynamic friction) decreases to the value of dynamic friction, this phenomenon occurs.

Description:

The test consists of subjecting the coated surface of the specimens to a relative movement with respect to a reference plate using a tensile testing machine connected to the apparatus, measuring the physical quantities of force and displacement.

Sample types:

This test can be applied to all rubber and thermoplastic elastomer seals with coated areas present in the extruded profile and molded part.

Different types of contact reference plates can be used depending on the application.

The same test concept could also be applied to fabrics.

In our laboratories we can carry out the tests indicated and many others, we leave you the link to the laboratory tests!

A special thank you goes to our colleague Dr. Pasquariello, an expert in the rubber sector, who raises our awareness of this issue so as to provide us with new content for these #laboratory pills !

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