TY - GEN
T1 - Reflectance difference laser measurements applied to the study of the stress/strain state in materials
AU - Saucedo-Zárate, Carlos H.
AU - López-López, Maximo
AU - Sánchez-Lópezb, Carlos
AU - Correa-Figueroa, Jose Luis
AU - Huerta-Ruelas, Jorge A.
PY - 2009
Y1 - 2009
N2 - Development of experimental setup to study strain/stress state in materials emerges from a need to evaluate by a nondestructive and non-invasive technique the performance in new materials like semiconductor heterostructures, composite materials and alloys. The system was designed and built to be used as a multi-functional experimental setup. The main purpose is to characterize materials in elastic and plastic regime by reflectance difference laser measurements and strain gages. This system allows the generalization of results obtained from a theoretical model based in Finite Element Model and experimental measurements taken in finite specific points with strain gages. A NI™ platform is used for signal conditioning and processing. System built is described which includes an optical setup to measure reflectance difference laser (RDL), and a flexor which applies deformation in a link, with a micrometer. A correlation bigger than 0.95 was found between optical signal, strain gage signal, and finite element modeling.
AB - Development of experimental setup to study strain/stress state in materials emerges from a need to evaluate by a nondestructive and non-invasive technique the performance in new materials like semiconductor heterostructures, composite materials and alloys. The system was designed and built to be used as a multi-functional experimental setup. The main purpose is to characterize materials in elastic and plastic regime by reflectance difference laser measurements and strain gages. This system allows the generalization of results obtained from a theoretical model based in Finite Element Model and experimental measurements taken in finite specific points with strain gages. A NI™ platform is used for signal conditioning and processing. System built is described which includes an optical setup to measure reflectance difference laser (RDL), and a flexor which applies deformation in a link, with a micrometer. A correlation bigger than 0.95 was found between optical signal, strain gage signal, and finite element modeling.
KW - Elastic deformation
KW - Plastic deformation
KW - Reflectance difference
KW - Strain gages
KW - Stress/strain
UR - http://www.scopus.com/inward/record.url?scp=73849083931&partnerID=8YFLogxK
U2 - 10.1117/12.849043
DO - 10.1117/12.849043
M3 - Contribución a la conferencia
AN - SCOPUS:73849083931
SN - 9780819478108
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Seventh Symposium Optics in Industry
T2 - 7th Symposium Optics in Industry, VII SOI
Y2 - 11 September 2009 through 12 September 2009
ER -