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.

Basic information

Original name

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

Authors

PROCHAZKA, David (203 Czech Republic); Martin BILÍK (203 Czech Republic); Petra PROCHAZKOVÁ (203 Czech Republic, belonging to the institution); Michal BRADA (203 Czech Republic); Jakub KLUS (203 Czech Republic); Pavel POŘÍZKA (203 Czech Republic); Jan NOVOTNÝ (203 Czech Republic); Karel NOVOTNÝ (203 Czech Republic, guarantor, belonging to the institution); Barbora TICOVÁ (203 Czech Republic, belonging to the institution); Albert BRADÁČ (203 Czech Republic); Marek SEMELA (203 Czech Republic) and Jozef KAISER (203 Czech Republic)

Edition

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

Other information

Language

English

Type of outcome

Conference abstract

Field of Study

10406 Analytical chemistry

Country of publisher

Austria

Confidentiality degree

is not subject to a state or trade secret

RIV identification code

RIV/00216224:14740/15:00086565

Organization unit

Central European Institute of Technology

Keywords in English

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

Abstract

In the original language

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.

Links

ED1.1.00/02.0068, research and development project
Name: CEITEC - central european institute of technology