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Viscoelastic Analysis of Rubber

Viscoelasticity is referred to as the property of materials that exhibit both viscous and elastic characteristics
when undergoing deformation.

A viscous material resists shear ow and strains linearly with time when a stress is applied, unlike an elastic
material that strains immediately when stressed and returns to original state once the stress is removed. A
viscoelastic material exhibits elements of both properties and therefore has a complex modulus.

Click to read the full Application Note!


Tribology on Piston Operations

Friction loss accounts for approximately 10% of total energy in fuel for a diesel engine [1]. 40-55% of the
friction loss comes from the power cylinder system. The loss of energy from friction can be diminished
with better understanding of the tribological interactions occurring in the power cylinder system.

A significant portion of the friction loss in the power cylinder system stems from the contact between
the piston skirt and the cylinder liner. The interaction between the piston skirt, lubricant, and cylinder
interfaces is quite complex due to the constant changes in force, temperature, and speed in a real life
engine. Optimizing each factor is key to obtaining optimal engine performance. This study will focus on
replicating the mechanisms causing friction forces and wear at the piston skirt-lubricant-cylinder liner
(P-L-C) interfaces.

Click to Learn about Piston Tribology!

A Better Look at Paper

Paper has played a large role in information distribution since its invention in the 2nd century [1]. Paper consists of intertwined fibers, typically obtained from trees, that have been dried into thin sheets. As a medium for information storage, paper has allowed the spread of ideas, art, and history over long distances and through passing time.

Today, paper is commonly used for currency, books, toiletries, packaging, and more. Paper is processed in different ways to obtain properties to match their application. For example, the visually appealing, glossy paper from a magazine is different compared to rough, cold-pressed watercolor paper. The method in which paper is produced will affect the surface properties of the paper. This influences how ink (or other medium) will settle onto and appear on the paper. To inspect how different paper processes affect surface properties, Nanovea inspected the roughness and texture of various types of paper by conducting a large area scan with our 3D Non-Contact Profilometer.

Click to learn about the Surface Roughness of Paper!

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