a 2015

Detection of Visually unrecognizable Braking Tracks using Laser-Induced Breakdown Spectroscopy

PROCHAZKA, David; Martin BILÍK; Petra PROCHAZKOVÁ; Michal BRADA; Jakub KLUS et al.

Základní údaje

Originální název

Detection of Visually unrecognizable Braking Tracks using Laser-Induced Breakdown Spectroscopy

Autoři

PROCHAZKA, David; Martin BILÍK; Petra PROCHAZKOVÁ; Michal BRADA; Jakub KLUS; Pavel POŘÍZKA; Jan NOVOTNÝ; Karel NOVOTNÝ; Barbora TICOVÁ; Albert BRADÁČ; Marek SEMELA a Jozef KAISER

Vydání

8th Euro-Mediterranean Symposium on Laser Induced Breakdown Spectroscopy, 2015

Další údaje

Jazyk

angličtina

Typ výsledku

Konferenční abstrakt

Obor

10406 Analytical chemistry

Stát vydavatele

Rakousko

Utajení

není předmětem státního či obchodního tajemství

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14740/15:00086565

Organizační jednotka

Středoevropský technologický institut

Klíčová slova anglicky

Tire tread particles; braking tracks; LIBS
Změněno: 16. 2. 2016 15:25, doc. Mgr. Karel Novotný, Ph.D.

Anotace

V originále

Identification of the position, length and mainly beginning of a braking track proves to be essential for determination of causes of a road traffic accident. With the introduction of modern safety braking systems and assistance systems such as the Anti-lock Braking System (ABS) or electronic stability control (ESC), visual identification of braking tracks that has been used until the present days proves to be rather complicated or even impossible. This paper focuses on identification of braking tracks using a chemical analysis of the road surface. The Laser-Induced Breakdown Spectroscopy (LIBS) was selected as a method suitable for a fast in-situ analysis. In the course of detailed observations of braking tracks it was determined that they consist of small particles of tire treads that are caught in intrusions in the road surface. As regards detection of the “dust” resulting from wear and tear of tire treads in the environment, organic zinc was selected as the identification element in the past. The content of zinc in tire treads proves to differ considering various sources and tire types; however, the arithmetic mean and modus of these values is approximately 1 % by weight. For in-situ measurements of actual braking tracks was used mobile LIBS device equipped with special module. It was performed several measurements for 4 different cars and tire types respectively which slowed down with full braking power from initial speed 70 km.h-1. Moreover influence of different initial speeds was tested.

Návaznosti

ED1.1.00/02.0068, projekt VaV
Název: CEITEC - central european institute of technology