Shoei-Sheng Chen, a retired senior mechanical engineer at the Argonne (Ill.) National Laboratory, died Feb. 11, 2012. He was 72.

Born in Taiwan, Chen was the first in his village to attend high school and graduated at the top of his class in engineering at National Taiwan University in 1963. In 1968, he earned a Ph.D. in civil and geological engineering from Princeton.

Then he joined Argonne National Laboratory and in 1980 was promoted to senior mechanical engineer. In 1987, he wrote Flow-Induced Vibration of Circular Cylindrical Structures, a book still in use. Chen received a distinguished performance award from the University of Chicago in 1986 and a medal from the American Society of Mechanical Engineers in 2001.

Chen was a consultant for the International Atomic Energy Agency, the Nuclear Regulatory Commission, NASA, Rockwell International, and others. He was a fellow of ASME and a member of the Asian American Alumni Association of Princeton. After 30 years, he retired from Argonne, and in 2001 moved to California, where he devoted his final decade to health and natural methods of disease prevention.

Chen was survived by Ruth, his wife of 42 years; three children; and five grandchildren.

Graduate memorials are prepared by the APGA.

Graduate Class of 1968