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Tool rake face temperature distribution by near infrared thermography while using YAG tools to machine Ti6Al4V
Garcia Gonzalez, Jean Carlos
Garcia Gonzalez, Jean Carlos
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Authors
Garcia Gonzalez, Jean Carlos
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Location
Time Period
Advisors
Moscoso-Kingsley, Wilfredo
Madhavan, Viswanathan
Madhavan, Viswanathan
Original Date
Digitization Date
Issue Date
2015-04-24
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Abstract
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Citation
Garcia Gonzalez, Jean Carlos. Tool Rake Face Temperature Distribution by Near Infrared Thermography While Using YAG Tools to Machine Ti6Al4V. --In Proceedings: 11th Annual Symposium on Graduate Research and Scholarly Projects. Wichita, KS: Wichita State University, p. 46
Abstract
Ti6Al4V is the most commonly used titanium alloy in the aerospace, automotive, chemical, and
biomedical industries. The alloy is attractive due to its high strength to weight ratio, corrosion
resistance, and compatibility with the human body. However, the alloy has poor machinability
due to severe abrasion, which leads to short tool life. Among efforts that have been undertaken to
optimize the machining of this alloy stands out the use of computer simulations. These
simulations may allow determination of process conditions that result in longest tool life. To be
useful, however, these models have to be validated experimentally. Typically, model validation
involves the measurement of cutting forces and chip thickness, and neglects critical outputs such
as tool temperature and its distribution. Out of these neglected outputs, the temperature
distribution at the tool rake face is the most difficult to obtain, since normally this face is not
accessible to the necessary instruments. During the course of the research to be presented herein,
access to the tool rake face was obtained with the use of optically transparent, very hard Yttrium
Aluminum Garnet (YAG) cutting tools. A novel technique, called near infrared thermography
was implemented to measure the full field distribution of the rake face temperature while
machining Ti6Al4V over a wide range of conditions spanning industrially typical speeds and
feeds. The expectancy is that the data can be used to produce better machining models for
process optimization. The YAG tool wear performance was evaluated to obtain preliminary data
about their potential as an industrial cutting tool material. It was found that peak temperature
along the tool rake face is in the order of 1000 degrees C and occurs at a distance from the cutting edge
of 1 to 1.5 times the feed. It was also found that after half a meter of cutting the depth of the
crater on the tool rake face formed by wear is typically less than 10 micrometers.
Table of Contents
Description
Presented to the 11th Annual Symposium on Graduate Research and Scholarly Projects (GRASP) held at the Heskett Center, Wichita State University, April 24, 2015.
Research completed at Department of Industrial and Manufacturing Engineering, College of Engineering
Research completed at Department of Industrial and Manufacturing Engineering, College of Engineering
Publisher
Wichita State University. Graduate School
Journal
Book Title
Series
GRASP
v.11
v.11