Determination of wear volumes by chromatic confocal measurements during twin-disc tests with cast iron and steel

Andersson, Peter; Hemming, Björn

doi:10.1016/j.wear.2015.05.011

Cited by 13 publications

(6 citation statements)

References 8 publications

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“…Instead, the surface of biological samples can be inspected optically, e.g., by confocal microscopy that returns the topological profile of a sample. Recent studies on engineering materials such as iron and steel have identified wear features by employing optical measurements, and the degree of wear was quantified by calculating International Organization for Standardization (ISO) parameters from the obtained images . ISO parameters have also been used to evaluate pathological alterations in the surface topography of articular cartilage .…”

Section: Resultsmentioning

confidence: 99%

Mucin Coatings Prevent Tissue Damage at the Cornea–Contact Lens Interface

Winkeljann

Boettcher

Balzer

et al. 2017

Adv Materials Inter

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With a prevalence of more than 10%, keratoconjunctivitis sicca (commonly known as dry eye syndrome) is one of the most frequent forms of ocular diseases; among contact lens wearers, this condition occurs even more often. Key components of the protective tear film are mucins, large glycoproteins that serve as molecular lubricants on many epithelial body surfaces. It is likely that, in the absence of a proper mucinous lubrication layer on the cornea surface, increased friction and tissue damage induced by contact lens sliding lead to discomfort. Herein, it is shown that purified gastric mucins efficiently prevent damage on the cornea, when they are used as a solution for cornea lubrication or as a molecular layer for contact lens coating. Furthermore, these results suggest that such a mucin coating also improves the performance of state‐of‐the‐art hydrogel lenses, which are designed to provide an auto‐lubrication mechanism upon contact with the eye. Thus, eye drops or contact lens storage solutions containing purified gastric mucins could be a great tool in fighting ocular dryness.

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Section: Resultsmentioning

confidence: 99%

Mucin Coatings Prevent Tissue Damage at the Cornea–Contact Lens Interface

Winkeljann

Boettcher

Balzer

et al. 2017

Adv Materials Inter

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“…The fatigue and wear tests were carried out under applied force of 450-500 N, 3 m/s lower disc (Cast iron) velocity, 48 hrs. duration, and 1 -51 number of tests [56]. Seo et al used TD to test the contact wear and fatigue of two types of rail materials UIC 60, and KS 60.…”

Section: Twin Disc Tribometer (Td)mentioning

confidence: 99%

A Review on Tribological Wear Test Rigs for Various Applications

bawab

Nirmal

Isa

et al. 2018

IJIE

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To mimic a tribosystem setup to the real time model while taking into consideration the subject of green tribology, many tribological wear test rigs are invented. The current work is a dedicated review on the latest development of various tribological wear test rigs build for numerous applications. With the aid of diagrams, the working principles of the machines which are built on specific standards are discussed. Their operating parameters associated with related research using these machines are also included. In addition, recommendations and directions for improvements in tribology machines are reported.

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“…Thus, optical techniques with keyhole access are required, such as triangulation, chromatic confocal sensing, absolute distance interferometry, or fringe projection [13][14][15][16]. All of these techniques can achieve sub-micron precision as well as sufficiently high measurement rates of several kHz for surface profile measurements at stationary and smooth objects.…”

Section: State-of-the-artmentioning

confidence: 99%

Optical, in situ, three-dimensional, absolute shape measurements in CNC metal working lathes

Kuschmierz

Davids

Metschke

et al. 2016

Int J Adv Manuf Technol

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Temperature drifts, tool deterioration, unknown vibrations, as well as spindle play are major effects which decrease the achievable precision of CNC lathes and lead to shape deviations of the processed workpieces. Since currently no measurement system exists for precise, in situ, 3D shape monitoring, much effort is required to simulate and compensate these effects. In this article, we propose an optical measurement principle for first part quality manufacturing. The absolute shape, meaning the diameter and surface profile, of the workpiece is determined from its tangential velocity and the surface distance. In order to allow keyhole access, both measurands are determined simultaneously with a single sensor. Measurements inside a metal working lathe show that the standard uncertainty for the absolute shape measurement is below 1 μm. The measurement uncertainty is nearly independent of the lateral surface velocity and roughness. The in situ measurements are compared to measurements with a tactile coordinate measurement machine for reference.

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Determination of wear volumes by chromatic confocal measurements during twin-disc tests with cast iron and steel

Cited by 13 publications

References 8 publications

Mucin Coatings Prevent Tissue Damage at the Cornea–Contact Lens Interface

Mucin Coatings Prevent Tissue Damage at the Cornea–Contact Lens Interface

A Review on Tribological Wear Test Rigs for Various Applications

Optical, in situ, three-dimensional, absolute shape measurements in CNC metal working lathes

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