Banca de DEFESA: WARLLEY DAVIDSON DOS REIS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : WARLLEY DAVIDSON DOS REIS
DATE: 29/11/2024
TIME: 09:00
LOCAL: Sala virtual Google meet
TITLE:

Centrifugal Pump Shaft Failure Analysis

KEY WORDS:

Failure analysis; centrifugal pump; fatigue failure; CAE simulation

PAGES: 69
BIG AREA: Engenharias
AREA: Engenharia de Materiais e Metalúrgica
SUMMARY:

The present work aims to identify cause(s) of failures that occurred in centrifugal pump shafts used in the pumping of iron ore pulp in a large mining plant. The breaks of this type of pump shaft can damage other components, leading to further performance compromises of the equipment. Thus, in the search for the proposed objective, a careful bibliographic review was performed on centrifugal pumps, types of fracture, fatigue and properties of structural steels used in centrifugal pump shafts (ABNT 1045 and ABNT 4140). Studies related to structural integrity, fatigue, failure modes, types of charges and morphology of fractures have also been done. Regarding the experimental part, a careful analysis of the fractured shafts using, among others, the following techniques: visual inspection, conventional mechanical tests (tensile test, Charpy impact test, hardness testing, rotary flexion fatigue test (S-N), micrographic analysis, SEM microfractography and computer simulation. Based on the studies, it was possible to conclude that the breaks of centrifugal pump shafts were motivated by a combination of fatigue potentiated by stress concentrations and occasional overloads.

COMMITTEE MEMBERS:
Interno - 2039079 - DANIEL CRISTIAN FERREIRA SOARES
Externo à Instituição - LUIZ CLÁUDIO CÂNDIDO - UFOP
Presidente - 2058408 - RICARDO LUIZ PEREZ TEIXEIRA