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									                                                  ASM - Atlanta
                               Newsletter of the Atlanta Chapter of ASM International
                               http://www.asm-atlanta.org/ Meets 3rd Tuesday
                               May, 2001               Volume 7               Number 9

                            Meeting of the Atlanta Chapter of ASM

                                        Tuesday Evening, May 15, 2001
                                   At the Georgia Tech Ferst Place Cafeteria,

    Nondestructive Thermographic Detection of Fatigue Damage:
              Experiments and Theoretical Modeling
                                               presented by Dr. Peter K. Liaw
                                             Department of Materials Science and Engineering
                                                   The University of Tennessee


                        Ceramic to Metal Linear Cellular Materials
                              A 10 minute Ph.D. student presentation by Kevin Hurysz

                   ASM Chapter Meeting                                        Reservations: RSVP - by 11:00 AM on Monday, May 14, to
               Tuesday Evening, May 15, 2001                                  Marlene White, Tel: (404) 894-2850, Fax: (404) 294-9140,
Wine Reception & Social: 6:00 PM                                              marlene.white@mse.gatech.edu
Dinner:                             7:00 PM                                   Note: A policy of ASM International is that one never pays to attend a
Introductions & Business: 7:50 PM                                             regular Chapter meeting program. So, if you desire to eat elsewhere, you
Mr. Hurysz’s Presentation: 8:00 PM                                            remain very welcome for the program.
Dr. Liaw’s Presentation: 8:15 PM
Costs:     $20.00 Regular, $6.00 Students
                                                                              Abstract:    Nondestructive Thermographic
MENU: A dinner menu of Southern Cuisine: tossed salad, fried
chicken with gravy, black-eyed peas, green bean casserole, mashed
                                                                              Detection of Fatigue Damage: Experiments and
potatoes with butter, corn bread, fruit cobbler & sweet tea.                  Theoretical Modeling
WHERE -- Georgia Tech Ferst Place Cafeteria, 3rd floor of                     High-cycle and low-cycle fatigue experiments were
Student Center Building (next to the campanile). Parking is                   conducted on reactor pressure vessel (RPV) steels. High-
available at the Student Center visitor parking lot off Ferst Drive.          cycle fatigue tests were performed using an advanced
electrohydraulic machine, which has a frequency range from          supported by the Institute of Nuclear Energy Research,
approximately 20 to 1,000 Hz, while low-cycle fatigue tests         Taiwan, the Taiwan Power Company, the National Science
were done with strain amplitudes from 0.3 to 0.6 %.                 Foundation (EEC-9527527, DMI-9724476, and DGE-
                                                                    9987548), Oak Ridge National Laboratory, and the U.S.
A high-speed and high-sensitivity thermographic infrared            Department of Energy Secretary for Energy Efficiency and
(IR) imaging system has been used for nondestructive                Renewable Energy, and Office of Transportation
evaluation of temperature evolution during fatigue testing of       Technologies, as part of the High Temperature Materials
RPV steels. The temperature sensitivity of the camera is            Laboratory User Program under contract DE-AC05-
0.015ºC at 23ºC. High-speed data acquisition capabilities           96OR22464, managed by Lockheed Martin Energy
are available at 150 Hz with a full frame, and 6,100 Hz with        Research Corporation.
a narrow window. A fully-automated software system was              Biography: Peter K. Liaw; Department of Materials Science &
employed to acquire temperature distributions of the test           Engineering, The University of Tennessee , Knoxville, TN 37996-
samples during fatigue experiments. Thus, the IR camera             2200
can be used to monitor in situ temperature evolutions               Peter K. Liaw was born in Chiayi, Taiwan. He graduated from the
                                                                    Chiayi High School, obtained his B.S. in Physics from the
resulting from fatigue.
                                                                    National Tsing Hua University, Taiwan, and his Ph.D. in Materials
                                                                    Science and Engineering from Northwestern University, USA, in
Five stages of temperature profiles were observed during            1980.
high-cycle fatigue testing: an initial increase of the mean
temperature of the test sample, a followed decrease of the          After working at the Westinghouse Research and Development
temperature, a saturation-temperature region, an abrupt             (R&D) Center for thirteen years, he joins the faculty and becomes
increase of temperature, and a drop of temperature after            an Endowed Ivan Racheff Chair of Excellence in the Department
specimen failure.      The measurements of temperature              of Materials Science and Engineering at the University of
oscillations within each fatigue cycle at 20 Hz has been            Tennessee (UT), Knoxville, since March 1993. He has been
attempted. During each fatigue cycle, the temperature was           working in the areas of fatigue, fracture, nondestructive evaluation,
                                                                    and life prediction methodologies of structural alloys and
detected to oscillate within 0.5ºC depending on the loading         composites. Since joining UT, his research interests include
conditions and test materials. When the applied stress              mechanical behavior, nondestructive evaluation, biomaterials, and
reached the minimum, and the temperature typically                  processing of high-temperature alloys and ceramic matrix
approached the maximum. However, the applied maximum                composites and coatings. He has published over three hundred
stress did not necessarily correspond to the minimum                and fifty papers, edited sixteen books, and presented numerous
temperature.                                                        invited talks at various national and international conferences.

Increasing the test frequency from 20 Hz to 1,000 Hz was            He has been a Key Reader on the Board of Review for
generally found to decrease fatigue life. Temperature               Metallurgical Transactions A, International Materials Reviews, and
                                                                    a Technical Advisor to the Journal of Metals (JOM). He was
evolutions offered possible explanations for the frequency
                                                                    awarded the Royal E. Cabell Fellowship at Northwestern
effect on the S (stress) – N (number of cycles to failure)          University.    He is a recipient of numerous "Outstanding
curve in the range of 20 Hz to 1,000 Hz.                            Performance" awards from the Westinghouse R&D Center. He
                                                                    was the Chairman of the TMS (The Minerals, Metals and Materials
A theoretical framework was attempted to predict                    Society) "Mechanical Metallurgy" Committee, and the Chairman
temperature evolutions based on thermoelastic and inelastic         of the ASM (American Society for Metals) "Flow and Fracture"
effects, and heat-conduction models.            Temperature         Committee. He has been the Chairman and Member of the TMS
oscillation during fatigue resulted from the thermoelastic          Award Committee on "Application to Practice, Educator, and
effects, while the increase in the mean temperature derived         Leadership Awards." He is a fellow of ASM. Several of his
                                                                    graduate students have been given awards for their outstanding
from the inelastic behavior of the materials. The predicted
                                                                    research and presentations at various professional societies and
temperature evolutions during fatigue were found to be in           conferences. Moreover, his students are teaching and doing
good agreement with the thermographic results measured by           research at universities, and industry and government laboratories
the advanced high-speed and high-sensitivity IR camera.             in USA
The stress-strain hysteresis loops and the inelastic strains
during high-cycle fatigue were back-calculated from the
measured temperatures, which indicates that thermography            Abstract: Ceramic to Metal Linear Cellular
could be used for detecting fatigue damage. Using the
concept of the tensile hysteresis energy, the measured mean         Materials
temperature was used to predict the low-cycle fatigue life,
which was found to be consistent with the experimental              Extrusion is a material forming process that permits the
results.                                                            shaping of ceramic paste into a form having constant cross
                                                                    section. The paste is a homogeneous mixture of two phases:
We are very grateful to our team members who significantly          a solid phase composed of raw material powders carried by
contribute to the research work, including B. Yang, L. Jiang,       a fluid solution of water, binder, and lubricant. To maximize
H. Tian, H. Wang, L. Chen, D. Fielden, C. R. Brooks, J. Y.          extrusion efficiency, the paste must be compliant enough to
Huang, R. C. Kuo, and J. G. Huang. The present research is          flow through a die yet have a high enough bulk shear stress
                                                                    at low shear rates to avoid deformation following extrusion.

A novel technology has been developed at Georgia Tech for
the extrusion of thin walled (< 150 um) ceramic honeycomb
and subsequent thermochemical processing of the green
structure to metal alloy.

In this presentation, I'll talk about the prediction and
modeling of paste properties and their relationship to quality
extrusion. There will be plenty of samples - ceramic and
metal - on hand to show off this promising technique for
manufacturing high strength, low density structures.

Kevin Hurysz is currently a Ph.D. student in Materials
Science and Engineering at Georgia Tech. He received his
M.S. in that field from Georgia Tech in 1998 and his B.S. in
Ceramic Engineering from Alfred University in 1996.
Email: gt0318d@acme.gatech.edu, Phone: 404-894-6602

                                                                     Dr. Subi Dinda of the Daimler-Chrysler Corporation describes
                                                                     some of the issues relevant to innovative designs and new emerging
                                                                     materials in the manufacturing of 21st century vehicles at the April
                                                                     Atlanta ASM meeting.

Vijay Yelundur presenting his work with High Efficiency Ribbon
Silicon Solar Cells at the April Atlanta ASM meeting.

Atlanta ASM Chairman's Message                                       Many of us have found that our meetings and tours offer an
                                                                     excellent opportunity to network with peers from Tech and
         by John L. Mihelich                                         from industry. It’s a great way to stay on top of what is
                                                                     happening locally in the materials field. Why not bring a
At our April dinner meeting, Dr Subi Dinda of                        colleague along too, to experience the fellowship of your
DaimlerChrysler and Trustee of ASM presented his views of            ASM Atlanta Chapter!
Materials Challenges-21st Century for the US automobile
industry. By lightweighting the vehicle and improving the
efficiency of the power plant, using hybrid systems or fuel
cell technology for example, the industry’s goal of making
                                                                         Ben Church Receives ASM Award
an 80-mpg vehicle can be achieved. Use of lightweight
metals, aluminum and magnesium, will play a major role in
achieving success.

Ga Tech grad student, Vijay Yelundur presented a summary
of his work to date on High Efficiency Ribbon Silicon
Solar Cells. His work is showing significant improvement
in solar cell efficiency approaching the 18% efficiency goal
set by the US Photovoltic Industry. This compares to 3 to-
5% efficiency of today’s photovoltic cells. A great leap

As part of your Chapters continuing Education effort, Kim
Spinsby, our 1st Vice Chair has identified a prime candidate
for Nationals’ Materials Camp Program. He is Josh Sofsky
who is a rising junior and is very interested in chemistry and       Ben Church (L) recently received the ASM-Atlanta Chapter's
math and would like to gain a flavor of materials. This week         Graduate Student Award for the 2000/2001 academic year.
                                                                     Presenting the award to Ben is Kim B. Spinsby, Atlanta ASM 1st
long program in August is held Materials Park, Ohio and the
                                                                     Vice Chair
student get to use ASM’s lab facilities for some hands-on
work. It is a super learning experience for the participants
                                                                     Ben has actively participated in student chapter activities,
and may lead some of them into careers in our field. Your
                                                                     and     has    outstanding      academic    and    research
Chapter has nominated Josh and we await word from
                                                                     accomplishments. He is the President of the ASM/TMS
National as to his selection.
                                                                     student chapter and has assisted the Atlanta Chapter with
                                                                     educational outreach activities and with demonstrations for
The Executive Committee discussed the idea of having a
                                                                     high school students and teachers. Ben joined the graduate
local Materials Camp using the facilities at Ga Tech. Dr.
                                                                     program in Materials Science and Engineering at Georgia
Dinda will take that concept back to the Board of Trustees
                                                                     Tech during the Fall of 1999. He has maintained a 4.0 GPA
for their input. This would be an excellent way to get a
                                                                     and has excelled in research. We are sure to see him
larger number of bright students in our area to experience
                                                                     continue to be active in student chapter as well as the
materials technology.
                                                                     Atlanta chapter activities in the coming years. Mr. Church
                                                                     was strongly recommended for this award by the MSE
Our May dinner meeting is the last one of the 2000-01
                                                                     faculty, and past and present student chapter chairs. Along
season. Our speaker will be Professor Peter Liaw from the
                                                                     with the high honor of receiving this presentation at the
University of Tennessee. He will explain his work on non-
                                                                     Georgia Tech Awards ceremony on April 17, the graduate
destructive testing of fatigue of metals. The Abstract of his
                                                                     student award includes a certificate from ASM-Atlanta, a
talk was provided at the beginning of this NewsLetter.
                                                                     $250 cash prize, and $250 worth of ASM publications of
                                                                     Ben’s choice.
The Executive Committee has reviewed the final revised
version of Chapter Rules/Bylaws. Bill Livesay did the job
and has sent these in to National for their approval.
Following Nationals’ approval, the Rules/Bylaws will be                       Atlanta Chapter Sustaining
released to the Chapter membership. The Chapter’s Annual
Meeting in May will then follow these Rules and officers                             Memberships
will be elected to serve the 2001-01 term. Our Nominating
Committee has prepared a slate of candidates . Members               The Atlanta Chapter of ASM is strongly encouraging
can also name additional candidates, if they wish, up until          companies and other organizations having materials related
the vote is taken at our 15 May meeting.                             interests to sign up with the Chapter’s Sustaining
                                                                     Membership program. Contact Subu Shanmugham
                                                                     MicroCoating Technologies, 5315 Peachtree Industrial

Blvd.,  Chamblee,     GA              30341       678-287-2417V;             • Participate in a novel student-exchange program, spending a
subu@microcoating.com                                                        semester at one of the non-home universities;

                                                                             • Receive on-site industrial case-study and research training
                                                                             through an industrial internship at the Engineering Technology
                                                                             Center -- a well-established consulting company specializing in
                                                                             developing advanced computational/design tools for structural-
                                                                             integrity analyses, at the Boeing Company -- a leading aircraft
             CALL FOR STUDENTS                                               company with expertise in aging aircraft materials, at the General
A New Program at The University of Tennessee in Materials                    Electric Company -- a large, diversified company with world-class
Lifetime Science & Engineering                                               gas-turbine and jet-engine technologies, or at Haynes International
                                                                             -- a prominent superalloy company with vast knowledge in aging
The University of Tennessee recently was awarded a five-year 2.7             superalloys;
million dollar grant from the National Science Foundation (NSF)
to establish an Integrative Graduate Education and Research                  •   Receive an internship at the Oak Ridge National Laboratory;
Training (IGERT) Program in Materials Lifetime Science and
Engineering.                                                                 • Experience the most advanced, computer-based teaching
                                                                             methods, including the use of multimedia educational tools, tele-
The Program involves extensive education and research                        education/research training methods, and Web-based electronic
collaborations among three universities (The University of                   notebooks;
Tennessee, Lehigh University, and Rutgers University), a
prominent national laboratory (Oak Ridge National Laboratory),               • Utilize state-of-the-art research equipment and computational
and four industrial companies (Engineering Technology Center,                facilities at the universities and industries, and at Oak Ridge
Analysis & Technology, Inc.; Boeing Company; General Electric                National Laboratory -- a world-renowned national laboratory;
Company; and Haynes International, Inc.).
                                                                             • Receive integrated course work and research training aimed at
The NSF IGERT Program represents a joint effort of 29 scientists             developing mathematical models to predict more accurately the
and engineers from the above universities, national laboratory, and          lifetimes of existing materials used in critical applications, such as
industries, with faculty participants being drawn from nine                  aircraft structures, jet engines, steam generators and turbines,
different academic Departments: Materials Science and                        bridges, and surgical implant devices;
Engineering; Mechanical and Aerospace Engineering, and
Engineering Science; Mechanical Engineering and Mechanics;                   • Receive integrated course work and research training aimed at
Chemistry; Civil and Environmental Engineering; Industrial                   developing new materials with longer lifetimes;
Engineering; Biochemistry, Cellular, and Molecular Biology;
Statistics; and Education.                                                   • Study conventional materials, such as steels and aluminum
                                                                             alloys, and advanced materials, such as composites, superalloys,
The Program consists of four integrated components: [1] major                intermetallics, metallic glasses, biomedical materials, and
research efforts with emphases on the environmental/mechanical               nanostructural materials; and
synergistic interactions that often control materials lifetimes, [2] a
new Ph.D. curriculum featuring integrative courses, [3] industrial
                                                                             • Graduate with a unique Ph.D. and exceptionally diverse,
and national-laboratory internships, and a student-exchange
                                                                             graduate-school    experiences,    resulting in high-demand
program among the universities, and [4] advanced, computer-
                                                                             employment in this exciting field.
based education/research technologies.
                                                                             For both graduate and undergraduate students who are
A major outcome of the Program will be Ph.D. graduates with a
                                                                             interested in this program, Please contact:
unique education/research background who can assume leadership
                                                                             Dr. Peter Liaw (865-974-6356, pliaw@utk.edu)
roles in the solutions of complex technological problems involving
                                                                             Dr. Ray Buchanan (865-974-4858, rab1@utk.edu)
materials lifetime science and engineering, resulting in accurate
                                                                             Dept. of Materials Science & Engineering
lifetime predictions and significant lifetime extensions of aging
                                                                             The University of Tennessee, Knoxville, TN 37996-2200
structural materials and components, and the development of new
                                                                             See our Web site:
materials with improved lifetimes.
Undergraduate students, in preparation for graduate studies, may
participate in the research activities of this NSF IGERT Program.                         Update Your Record
Call for Graduate Students                                                               at ASM International
Graduate students (US citizens or permanent residents) will have                   http://www.asminternational.org
unique opportunities to:

• Earn a Ph.D. at The University of Tennessee, Lehigh                        ASM International requests that each member go to the
University, or Rutgers University in a new, integrated,                      ASM web site in order to verify your addresses, contact
multidisciplinary curriculum emphasizing materials lifetime                  details, email, etc. You will use your member number, found
science and engineering;                                                     on your ASM Membership card or on a mailing label from
                                                                             ASM, to access your personal record. Find this page under
                                                                             “For Members Only”.

Nominations for ASM Chapter Officers
The Nominating Committee, Chaired by Prof. Naresh Thadhani
plans to place the following slate of officers in nomination at the
Atlanta ASM Chapter annual business meeting on May 15.

Chapter Chair: Kim B. Spinsby, Siemens Energy & Automation
Vice Chair, Academic Affairs: Steve Johnson, Ga Tech School
Materials Science & Engineering
Vice Chair, Programs: Subu Shanmugham, MicroCoating
Vice Chair, Industry Relations: George W. Kremer, Consultant
Secretary: Gautam R. Patel, Georgia Tech GTRI
Treasurer: James F. Lane, Applied Technical Services

The Atlanta Chapter of ASM does not normally have programs
during the summer months. The next scheduled issue of the
newsletter, ASM-Atlanta will be in September, 2001. However, as
the chapter learns of seminars or other programs in the Atlanta area
of interest to the membership, you may receive email notices of
these events. However, we need your email address.

Newsletter email; If you are not receiving this Newsletter via
email, it is only because we don’t know your email address. If
NOT receiving the email version, please send an e-message to Bill
Livesay at b.livesay@gtri.gatech.edu with one word, “ASM”, as
both the subject and body of the message. Ultimately, we would
like the distribution to be nearly all email, but we currently have
fewer than half of the membership’s correct email addresses.

The Features of ASM-Atlanta include:
•    Program Notes for Meetings
•    Chairperson's note to members.
•    Career Development: job opportunities or jobs needed
•    Company Feature: Short description of what a particular
company does - that is informative to other members - not just an
advertising item
•    Technical Features: Short (one page or less) descriptions of
an interesting technical or scientific materials topic - perhaps from
a manufacturing or research development.
•    Education Feature: Materials course offerings.
•    Georgia Tech Student Chapter News
•    Member News
     -    Special Events, Awards & Honors.
     -    New Members
     -    Deaths
     -    Transitions
•    ASM International News
•    Advertisements
•    Outreach (ASM members to Schools, Scouts, etc.)

Please contribute information for inclusion in the newsletters. For
example, you may contribute a short (one page or less) technical
item which would be of interest to your fellow members - or
suggest who might write an article. You may want to say
something about the work of your organization or company that
would be of interest.            Please contact Bill Livesay
(b.livesay@gtri.gatech.edu) for both ads and news input for the
next ASM-Atlanta.

Atlanta ASM Chapter Officers                                        Membership Committee Chair: Subu Shanmugham,
                                                                    MicroCoating Technologies, 5315 Peachtree Industrial Blvd,
Chairman: John L. Mihelich, Metal Experts International, 7440       Chamblee, GA 30041
Mason Falls Drive, Winston, GA 30187,                               678-287-2417; subu@microcoating.com
770-942-7893V: 770-942-0922 F, yodonna@aol.com
                                                                    GT ASM Student Chapter President: Ben Church,
1st Vice Chair: Kim B. Spinsby, Siemens Energy and                  Georgia Tech Student Chap President, Graduate Student.
Automation, 100 Technology Dr., Alpharetta, GA, 30005,              Materials Science & Engineering, Atlanta, GA 30332-0245
770-740-3185V; 770-740-3050F,                                       404-894-9140; 404-894-5956F; gte443r@prism.gatech.edu
                                                                    Communications & Web Site: Greg Kennedy,
2nd Vice Chair: (Programs) George W. Kremer                         Georgia Tech, Atlanta, GA 30332; 404-894-1475V; 404-894-
1220 Lochshyre Way, Lawrenceville, GA 30043-6454                    9140F, gte290r@prism.gatech.edu
770-339-9938V; 770-339-6792F, gwkremer@bellsouth.net
                                                                    Immediate Past Chair: Naresh Thadhani,
Secretary: Gautam R. Patel, Georgia Tech Research Institute,        Georgia Tech Mat. Eng. & Sci. Dept., Atlanta, GA 30332-0245;
Material Analysis Center                                            404-894-2651V; 404-894-9140F,
Baker, #273, Atlanta, Georgia 30332                                 naresh.thadhani@mse.gatech.edu
404 894-3635V; gautam.patel@gtri.gatech.edu                         http://www.mse.gatech.edu/faculty/thadhani/thad.html

Treasurer: James F. Lane, Applied Technical Services;               Previous Chairs Advisory Group: (Maximum of 3)
1190 Atlanta Industrial Drive, Marietta, GA 30066                   Bill Livesay, LSS, ASM Atlanta Newsletter Editor
770-218-2180 x3041V; 770-424-6415F, jlane@atslab.com                775 Upper Hembree Road, Roswell, GA 30076
                                                                    770-664-8742V; 770-410-0122F, b.livesay@gtri.gatech.edu
Atlanta Chapter Academic Advisor:
Ashok Saxena, Georgia Tech Mat. Eng. & Sci. Dept.,                  Jim Hubbard, Materials Analytical Services, 3945 Lakefield
Atlanta, GA 30332-0245                                              Court, Suwanee, GA 30024
404-894-2888V; 404-894-9140 F, ashok.saxena@mse.gatech.edu          770-866-3205V, 770-866-3259F, jhubbard@mastest.com
                                                                    Justin Clark, Past Student Chap. Pres. Georgia Tech Student
                                                                    Chap President, Graduate Student, Materials Science &
                                                                    Engineering, Atlanta, GA 30332-0245
                                                                    404-894-5956V; 404-894-9140F, gt3360b@prism.gatech.edu

775 Upper Hembree Road
Roswell, GA 30076


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