Monday, March 20, 2006

A Tribute to Professor T.H. Lin’s Most Distinguished Career

In conjunction with

The 2006 Seventh World Congress on Computational Mechanics
Century City, Los Angeles, California
July 16—22, 2006

By Woody Ju

To honor the 95th birthday and the most distinguished lifetime career of Prof. T.H. Lin, we are organizing a very special symposium, entitled “T.H. Lin 95th Birthday Symposium on Computational Mechanics and Materials”, to be held on July 16-22, 2006, at the Hyatt Regency Century Plaza Hotel, in conjunction with the 2006 7th World Congress on Computational Mechanics.

Professor Lin was born in China in Year 1911. He was among the first groups of Chinese students and scholars to study in the U.S., arriving at MIT in Year 1934 after a historic selection process. During the World War II, Professor Lin decided to join the war against Japan by returning to China, and he built the very first airplane in China under the sponsorship of the Nationalist Government during WWII. Since no test pilot was willing to test fly his first-ever Chinese designed and manufactured twin-engine “China Transport No. 1” airplane at the time, Professor Lin risked his own life being a passenger with the test pilot on the successful virgin test flight in Year 1944. Professor Lin is truly the father of aviation in China. After WWII, Professor Lin returned to the U.S., pursued his Ph.D. degree at the University of Michigan, and worked as an Associate/Full Professor at the University of Detroit. In 1955, he joined UCLA and became (most likely) the first Asian-American professor on campus.

Professor Lin has made seminal and most important contributions to the field of solid mechanics and materials science, particularly involving crystal plasticity, dislocations, persistent slip bands (PSB) in metals, and micromechanics of creep and fatigue microcrack initiation in metals. Plastic deformation in metal requires the motion of dislocations. As they move through materials, screw dislocations cross-glide from one glide plane to another, and back again, leaving edge dislocation dipoles in their wakes. These dislocation dipoles are persistent since they can only be removed through diffusion. They cause strain-hardening and degradation of the strength of the material, leading to the initiation of fatigue micro-cracks, and eventually to fatigue failure. Among his other prominent scholarly work, Professor Lin has made historic landmark contributions in the above research field. His 1968 book on “Theory of Inelastic Structures” carried monumental influences for plastic analysis of solids and structures. Professor retired from UCLA in 1978, but he continues his active research in plasticity to this day (at the age of 95).

Professor Lin has received numerous awards and honors in his seven-decade most distinguished career, including the 1988 ASCE Theodore von Karman Award and the 1990 election to the U.S. National Academy of Engineering.

Professor J. Woody Ju (UCLA) and Professor George J. Weng (Rutgers University) organized a memorable special T.H. Lin 90th Birthday Symposium on Mechanics and Materials in June 2001, in connection with the 2001 Joint ASCE-ASME-SES Mechanics and Materials Conference at San Diego, California. A special Ginkgo tree was planted in front of the UCLA Boelter Hall (School of Engineering) on June 29, 2001, to honor Professor Lin’s distinguished career and life long contributions to UCLA and the field of mechanics and materials; see Photo 1. This time, Professor J. Woody Ju and J.S. Chen (UCLA) and Professor Lizhi Sun (UC Irvine) are truly honored to organize this historic T.H. Lin 95th Birthday Symposium on Computational Mechanics and Materials in July 2006 at Los Angeles. We sincerely and respectfully wish Prof. Lin a very special and happy birthday at age 95, and offer our best wishes for many more good years to come for Professor Lin!

Professors T.H. Lin and J. Woody Ju (Author) in front of the special Ginkgo tree in honor of Professor Lin’s distinguished career and contributions, in front of UCLA Boelter Hall, after the tree-planting ceremony on June 29, 2001.


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