Banca de DEFESA: ALEXANDRE ROMAN

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : ALEXANDRE ROMAN
DATA : 17/03/2022
HORA: 10:00
LOCAL: Caxias do Sul
TÍTULO:

FRICTION MATERIAL WEAR: EFFECTS AND INTERACTIONS BETWEEN SERVICE BRAKE TEMPERATURE, LINING CONTACT PRESSURE, AND VEHICLE SPEED

PALAVRAS-CHAVES:

brake pad wear, mass loss, brake temperature, lining contact pressure, vehicle speed, analysis of variance (ANOVA), design of experiments (DOE)

PÁGINAS: 49
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Mecânica
SUBÁREA: Projetos de Máquinas
ESPECIALIDADE: Elementos de Máquinas
RESUMO:

International standards and original equipment manufacturers (OEM) procedures usually define wear tests in organic friction materials focusing on the brake lining temperature. The current work presents an approach combining different brake pads temperatures, vehicle speeds, and brake pressures for analyzing their effects and interactions in the friction material wear through dynamometer tests. Therefore, mechanical properties were evaluated, where internal shear strength had the most significant influence on wear; furthermore, compressive strength and flexural strength did not considerably change with variations on the test parameters. A 2³ factorial design of the experiment (DOE) showed that the brake temperature alone was not the main factor for increasing wear, and the primary wear mechanism was abrasion. Furthermore, higher vehicle speed (80 km/h) along with greater brake pressure (3 bar) promoted the highest friction material mass loss (10.8 g).

MEMBROS DA BANCA:
Presidente - 1997577 - ALEXANDRE LUIS GASPARIN
Interno - 1332290 - EDSON LUIZ FRANCISQUETTI
Interno - 1804846 - JULIANO CANTARELLI TONIOLO
Externo à Instituição - GUILHERME VIEIRA BRAGA LEMOS - UFRGS