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Category: Tribometer

 

Wood Wear Testing with Nanovea Tribometer

Wood has been used for thousands of years as a building material for homes, furniture and flooring. It has a combination of natural beauty, durability and restorability, making it an ideal candidate for flooring. Unlike carpet, hardwood floors keep their color for a long time and can be easily cleaned and maintained, however, being a natural material, most wood flooring requires the application of a surface finish to protect the wood from various kinds of damage such as scuffing and chipping over time. In this study, a Nanovea Tribometer was used to measure the wear rate and coefficient of friction (COF) to better under-stand the comparative performance of three wood finishes.

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Evaluating Brake Pads with Tribology

Brake pads are composites., material made up of multiple ingredients, that must be able to
satisfy a large number of safety requirements. Ideal brake pads have high coecient of friction
(COF), low wear rate, minimal noise, and remain reliable under varying environments. To
ensure the quality of brake pads are able to satisfy their requirements, tribology testing can be
used to identify critical specications.

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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.

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A BETTER Look at Polycarbonate Lens

Polycarbonate lenses are commonly used in many optical applications. Their high impact resistance, low weight, and cheap cost of high-volume production makes them more practical than traditional glass in various applications [1].

Some of these applications require safety (e.g. safety eyewear), complexity (e.g. Fresnel lens) or durability (e.g. traffic light lens) criteria that are difficult to meet without the use of plastics. Its ability to cheaply meet many requirements while maintaining sufficient optical qualities makes plastic lenses stand out in its field. Polycarbonate lenses also have limitations. The main concern for consumers is the ease at which they can be scratched. To compensate for this, extra processes can be carried out to apply an anti-scratch coating.

Nanovea takes a look into some important properties of plastic lens by utilizing our three metrology instruments: Profilometer, Tribometer, and Mechanical Tester.

 

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