Date of Award
Spring 2002
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Mechanical & Aerospace Engineering
Program/Concentration
Materials Science and Engineering
Committee Director
K. Nagarathnam
Committee Member
M. C. Gupta
Committee Member
K. Williamson
Call Number for Print
Special Collections; LD4331.E56 H86 2002
Abstract
In the five decades since its invention, the laser has been used to commercially process materials in an increasingly diverse number of ways. The precise control over the delivery of the incident energy that is afforded by a laser allows for a wide variety of applications. All of these processes depend in some way on two important physical properties of the material being treated. These properties are known as the optical reflectivity and absorptivity of a material. The values of each of these properties are different for each material and are influenced by a number of factors, including surface roughness, surface layers, angle of incidence, wavelength, and temperature of the substrate.
In this work, specimens of Type 304 stainless steel, Al-2090, commercially pure copper, and Ti-6Al-4V were tested for their reflective and absorptive properties. The laser used was a He-Ne laser of λ =0.6328 μm, in a temperature range of 23-350 °C. These specimens have been shielded with inert argon. The data from these experiments have been compared with the Hagen-Rubens relation to analyze its applicability at visible wavelengths. The results show that the Hagen-Rubens equation over predicts the reflectivity of each sample for the tested wavelength.
Rights
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DOI
10.25777/gmhq-d919
Recommended Citation
Hunyady, Thomas A..
"The Effect of Temperature on the Optical Absorptive and Reflective Behavior of Metals"
(2002). Master of Science (MS), Thesis, Mechanical & Aerospace Engineering, Old Dominion University, DOI: 10.25777/gmhq-d919
https://digitalcommons.odu.edu/mae_etds/531