Banca de DEFESA: Raynnara Ribeiro Dias Lucenas

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : Raynnara Ribeiro Dias Lucenas
DATE: 30/11/2022
TIME: 09:00
LOCAL: Plataforma Teams
TITLE:

CRITERIA FOR THE APPLICATION OF QUANTITATIVE INFRARED THERMOGRAPHY IN THE RESEARCH OF CERAMIC DETACHES FROM FACADE

KEY WORDS:

Quantitative thermography, Thermographic inspection, Facades, Ceramic coating,

PAGES: 134
BIG AREA: Engenharias
AREA: Engenharia Civil
SUBÁREA: Construção Civil
SPECIALTY: Materiais e Componentes de Construção
SUMMARY:

Throughout their useful life, the facades of buildings are under the action of degradation agents. Among the degradation agents, those of thermal origin exert a strong influence on ceramic facade coverings, since the requests generated by the action of these agents result in dimensional variations that induce tensions at the interfaces of the layers, which can generate anomalies. To ensure performance and minimize the appearance of anomalies, inspection routines must be established. Among the inspection tools is infrared thermography, a nondestructive, non-contact, real-time measurement test. The thermograms obtained are analyzed qualitatively or quantitatively. The objective of this study is to define criteria for quantitative analysis of thermograms. The anomalies of detachment in facades with ceramic coating of three buildings located in Brasília-DF are investigated. In this study, the passive approach and qualitative and quantitative analysis of the thermograms obtained are used. A quantitative analysis routine is proposed based on criteria obtained in the investigation of areas without the presence of anomalies and areas with anomalies. These criteria are used to determine the Delta T and Delta Tcor thermal contrasts. The TSAREF reference criterion of the no anomaly zone is used in the Delta T correction to determine the Delta Tcor. The Delta Tcor proposal aims to provide an indicator for the detection and evaluation of ceramic facade detachments. In this study, the indicator is that from Delta T of 0.11 °C and Delta Tcor of 0.005 °C/°C in stage A (period from 07h to 12h) and Delta T of -1.50 °C and Delta Tcor of -0.066 °C/°C in stage B (period from 16:50 to 20:00 h) there is the presence of ceramic detachments. The quantitative analysis routine proposed in this study can be applied in the investigation of ceramic detachments located in different buildings, in different locations in Brasília-DF and exposed to different climatic conditions and heat flow.

BANKING MEMBERS:
Presidente - 404321 - ELTON BAUER
Externo ao Programa - 3212150 - LENILDO SANTOS DA SILVA
Externo à Instituição - ELIER PAVÓN