RE: Asbestos in brakes: Exposure and risk of disease

Teta, M. Jane

doi:10.1002/ajim.20060

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…73 Today, asbestos is not used in brake pads, bearing in mind that it has been established that asbestos and the resulting particles can have a significant negative impact on human health. 74,75 According to Hulskotte et al, 27 the composition of 65 commercial brake pads was tested and determined that the dominant metals in brake pads are Fe, Cu, Zn and Sn; on the other hand, the dominant metal in the discs is Fe. According to this source, in comparison with other literature, it is concluded that in relation to previous research, the percentage of Pb is much lower, which is in accordance with the legislation.…”

Section: Applied Materials In Brake Friction Pairsmentioning

confidence: 99%

The analysis of the influential parameters that cause particles formation during the braking process: A review

Vasiljević

Glišović

Stojаnović

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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The braking system is one of the important systems from the aspect of vehicle safety, but it is also one of the systems that has a significant impact on the environment. Brakes are considered to be a source of non-exhaust particles, that is sources that create particles by the wear of the elements that are in contact with each other, and in this case, the brake friction elements (brake pads and rotating disc). Such particles often contain heavy metals that are part of the friction elements. There are a number of influencing factors that can affect the wear of the friction elements and increase the concentration of the formed particles. Laboratory methods of testing wear and particle formation, road tests and various simulations of brake wear are most often used for testing. In this paper, a review of methodologies for testing the formation of particles from the braking system, the materials used in the composition of the friction elements of the brake, as well as factors affecting the wear rate and concentration of particles of different sizes, based on the conclusions of other authors is presented. Based on this review, it can be concluded which quantities and factors need special attention during further research in the mechanism of formation of non-exhaust particles whose source is the vehicle braking system.

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Section: Applied Materials In Brake Friction Pairsmentioning

confidence: 99%

The analysis of the influential parameters that cause particles formation during the braking process: A review

Vasiljević

Glišović

Stojаnović

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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Malignant pleural mesothelioma in US automotive mechanics: Reported vs expected number of cases from 1975 to 2007

Finley¹,

Pierce²,

Paustenbach³

et al. 2012

Regulatory Toxicology and Pharmacology

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Review: Coalinga Chrysotile: Dissolution, Concentration, Regulation and General Relevance

Ilgren

2008

Indoor and Built Environment

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Coalinga chrysotile's lack of biological activity in animals and humans is due to its amphibole-free nature, short fiber length, and enhanced width, all of which contribute to a greatly reduced bio-persistence. Compared to most other chrysotile types, it has greater solubility and enhanced dissolution, especially the very small percentage of long, thin respirable fibers that reach the alveolar portions of the lung. In consequence, the mineral poses no health threat. The ultra-structural features underlying the susceptibility to dissolution include spiral structures, permanent ledges, an absence of inter- and intra-fibrillar matrix, extremely narrow fibrillar width giving very high surface areas and surface reactivity potentials, and a relatively high number of fibrillar `ends'. Any fibers released from products made from Coalinga type material; including friction products, ceiling tiles, acoustic tiles, shingles, piping and other cement products as well as fireproofing materials, through manipulation will, on aerosolization, show re-aggregation and other properties of the parent fiber. Fiber analysis of any chrysotile containing material has always been problematic because of the fundamental structure of the fibers. Research has shown the need for indirect preparation methods of Coalinga type chrysotiles for risk assessment purposes. Direct preparation methods do not give correct answers and therefore cannot reflect biological potential. Fiber counts made by phase contrast microscopy, for example, will include large numbers of long pseudo-fibers and give results that are very misleading. The true biological nature of short and long Coalinga type chrysotiles can only be predicted using the results of indirect analysis.

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RE: Asbestos in brakes: Exposure and risk of disease

Cited by 3 publications

References 10 publications

The analysis of the influential parameters that cause particles formation during the braking process: A review

The analysis of the influential parameters that cause particles formation during the braking process: A review

Malignant pleural mesothelioma in US automotive mechanics: Reported vs expected number of cases from 1975 to 2007

Review: Coalinga Chrysotile: Dissolution, Concentration, Regulation and General Relevance

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