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Wolfgang H Sachse

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  • Wolfgang H Sachse
  • Dept: Mechanical and Aerospace Engineering
  • Title: Meinig Family Professor of Engineering
  • Address: 325 Thurston Hall
  • Phone: 607 255-5065
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Biography

Wolfgang Sachse earned B. S. degree in physics at Penn State and M. S.E. and Ph.D. degrees in mechanics and materials from Johns Hopkins University. Before joining the Cornell faculty in 1970, he was a German Academic Exchange and Humboldt Fellow at the RWTH Aachen. At Cornell he is the Meinig Family Professor of Engineering and a member of the graduate fields of Mechanical Engineering, Theoretical and Applied Mechanics and Materials Science and Engineering. He has held visiting appointments at the National Institute of Standards and Technology and was Nippon Steel Endowed Chair Professor at the Research Center for Advanced Science and Technology at the University of Tokyo in 1993.

Sachse is a member and fellow of several scientific and technical societies. He has authored more than 250 technical papers. He has been granted two patents, authored two review chapters and edited a book. He currently is Editor-in-Chief of
the journal Ultrasonics which is published by Elsevier Science. Previously he was Editor-in-Chief of the journal Materials Evaluation . Between 1995 and 2003 he organized and served as Technical Chair of the international Ultrasonics International conference series. For his professional activities Sachse will be awarded The Golden Whistle, the highest award bestowed by the International Congress on Ultrasonics at its upcoming
meeting in Singapore, May 2-5, 2013.

Research Interests

Sachse's research interests involve around ultrasonic waves and materials and specifically, non-destructive materials testing applications. His laboratory developed both active and passive ultrasonic techniques for characterizing flaws and defects in materials, characterizing dynamic fracture processes and measuring applied and residual stresses in metals. They also developed and studied the generation of ultrasound via lasers, sparks and X-rays. His research group pioneered the development and application of point-source/point-receiver ultrasonic measurements for the characterization of anisotropic and heterogeneous materials. Recent interests have focused on novel air-coupled ultrasonic measurements of powders and acoustic microscopy measurements of bio-materials. Twenty years ago working with Igor Grabec, he developed measurement systems which incorporate intelligent processing capabilities, similar to those possessed by living beings, to solve diverse measurement and control problems. A monograph describing this work (co-authored with I. Grabec) is titled Synergetics of Measurement, Prediction and Control and was published by Springer-Verlag in 1997.

Teaching Interests

Sachse's teaching covers the areas of experimental mechanics, dynamics, solid mechanics, vibrations, elastodynamics, sensors and actuators. He has developed successful, Introdcution to Engineering hands-on introductory engineering laboratory courses. The first, titled Sensors and Actuators ENGRI 123 received a Dean's Prize for Teaching in 1989. Between 1995 and 2006 he developed and taught the acclaimed freshmen ENGRI 118 Design Integration: A Portable CD Player (later Design Integration: DVD's and iPods) which was a laboratory course that focused on engineering design and application to digital media players.

Sachse's current teaching involves the sophomore-level Mechanics of Solids course which is taken by over 250 students in the Fall semester and the junior-level laboratory course Mechanical Properties and Performance Laboratory which is currently taken by over 140 students. Depending on demand, he also teaches the graduate-level Elastic Waves in Solids and Applications.

Service Interests

Since July 2011 Sachse has been serving as Associate Director of Undergraduate Studies in the Sibley School of Mechanical & Aerospace Engineering. Prior to that, from 2001 to 2010 he served as Director of Graduate Studies for the Field of Theoretical and Applied Mechanics.

Sachse is currently the chair of the University Lectures Committee. He is also serving a three-year term on the University's Safety Committee and is a member of the Faculty Advisory Board to the Johnson Museum.

He served several three-year terms as faculty representative on FACAPE, the Faculty Committee on Physical Education and Athletics. Sachse is also actively involved in a number of undergraduate student activities. He is a House Fellow of Alice Cook House on West Campus. For ten years he served as the Faculty Advisor to Cornell Women's Fencing. He currently serves as Faculty Advisor to Cornell's Whistling Shrimp a comedy improv group on campus; the Ithaca Tangueros , the Ithaca and Cornell Argentine Tango dance group; the Argentinian and Urugayan Graduate Student Association and the Cornell Garden Plots organization.

 

Selected Publications

  • Tan, D S., J T. Jenkins, S C. Keast, W H Sachse. 2015. "Acoustic signals generated in inclined granular flows." Journal of Geophysical Research: Earth Surface 120 (10): 2027-2039.
  • Sachse, Wolfgang H., K. Y. Kim, M. O. Thompson. 2015. "Accurate Determination of the Polarization Direction of an Acoustic Shear Transducer." Journal of the Acoustical Society of America.
  • Every, G., A. A. Maznev, W. Grill, M. Pluta, J. D. Comins, O. B. Wright, O. Matsuda, Wolfgang H. Sachse, J. P. Wolfe. 2013. "Bulk and surface acoustic wave phenomena in crystals: Observation and interpretation." Wave Motion 50 (8): 1197-1217.
  • Sachse, W. 2010. "Selected Papers from ICU 2009 Preface." Ultrasonics 50 (2): 101-102.
  • Sachse, W. 2008. "Preface." Ultrasonics 48 (6-7): 469-470.

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Selected Awards and Honors

  • The Golden Whistle Achievement Award (International Congress on Ultrasonics) 2013

Education

  • BS (Physics), Pennsylvania State University, 1963
  • MS (Mechanics and Materials), Johns Hopkins University, 1966
  • Ph D (Mechanics and Materials), Johns Hopkins University, 1970