About the Author
of H-DRILL

Professor Gary S. Schajer is a well-known researcher in the area of residual stress measurements. He teaches and does research in the Department of Mechanical Engineering, in the University of British Columbia, Vancouver, Canada. His first hole-drilling publication was recognized by the 1981 Best Paper Award of the Journal of Engineering Materials and Technology. Since then, Professor Schajer has done extensive research on residual stress measurements, and has published numerous papers and book chapters. He is a member of ASTM committee E28-13 on residual stress measurement, and has been responsible for three major revisions of ASTM E837 Standard Test Method for Hole-Drilling Residual Stress Measurements.

           Prof. Gary Schajer
 
 

Hole-Drilling Publications:

  • Schajer, G. S. “Hole-Drilling Residual Stress Profiling with Automated Smoothing”. Journal of Engineering Materials and Technology. Vol.129, No.3, pp.440-445, 2007.
     
  • Schajer, G. S. and Prime, M. B. “Use of Inverse Solutions for Residual Stress Measurements.” ASME Journal of Engineering Materials and Technology. vol.128, no.3, pp.375-382, 2006.
     
  • Schajer, G.S. and Steinzig, M. "Full-Field Calculation of Hole-Drilling Residual Stresses from ESPI Data", Proc. 2004 SEM X International Congress, June 7-10, 2004, Costa Mesa, CA. Paper 227, 9pp. 2004.
     
  • Schajer, G.S., “Residual Stresses: Measurement by Destructive Methods.” Section 5a in “Encyclopedia of Materials: Science and Technology”, eds. K. H. J. Buschow et al. Elsevier Science, Oxford. 2001.
     
  • Schajer, G.S., and Tootoonian, M. "A New Rosette Design for More Reliable Hole-Drilling Residual Stress Measurements", Experimental Mechanics, Vol. 37, No. 3, pp. 299-306, 1997.
     
  • Schajer, G.S., "Hole Drilling and Ring Core Methods." Sections 2.1-2.3 in "Handbook of Measurement of Residual Stresses", ed, J. Lu. Fairmont Press, Lilburn, GA. 1996. pp.5-20.
     
  • Schajer, G.S., and Altus, E., "Stress Calculation Error Analysis for Incremental Hole Drilling Residual Stress Measurements", ASME Journal of Engineering Materials and Technology. Vol. 118, No. 1, pp. 120-126, 1996.
     
  • Tootoonian, M. and Schajer, G.S. "Enhanced Sensitivity Residual Stress Measurements using Taper Hole Drilling", Experimental Mechanics. Vol. 35, No. 2, pp. 124-129, 1995.
     
  • Sue, J.A., and Schajer, G.S., "Stress Determination for Coatings.” A chapter in “ASM Handbook, Vol. 5: Surface Engineering”, ASM International, pp. 647-653, 1994.
     
  • Schajer, G.S., and Yang, L., "Residual Stress Measurement in Orthotropic Materials Using the Hole-Drilling Method", Experimental Mechanics, Vol. 34, No. 4, pp. 324-333, 1994.
     
  • Schajer, G.S., "Use of Displacement Data to Calculate Strain Gauge Response in Non-Uniform Strain Fields", Strain. Vol. 29, No. 1, pp. 9-13, 1993.
     
  • Schajer, G.S., "Strain Data Averaging for the Hole-Drilling Method", Experimental Techniques, Vol. 15, No. 2, pp. 25-28, 1991.
     
  • Schajer, G.S., "Judgment of Residual Stress Field Uniformity When Using The Hole-Drilling Method", Proc. 2nd International Conference on Residual Stresses, Nancy, France, Nov. 23-25, 1988, pp. 71-77.
     
  • Schajer, G.S., "Measurement of Non-Uniform Residual Stresses Using the Hole-Drilling Method. Part II. Practical Application of the Integral Method", ASME Journal of Engineering Materials and Technology, Vol. 110, No. 4, pp. 344-349, 1988.
     
  • Schajer, G.S., "Measurement of Non-Uniform Residual Stresses Using the Hole-Drilling Method. Part I. Stress Calculation Procedures", ASME Journal of Engineering Materials and Technology, Vol. 110, No. 4, pp. 338-343, 1988.
     
  • Schajer, G.S., "Application of Finite Element Calculations to Residual Stress Measurements", ASME Journal of Engineering Materials and Technology, Vol. 103, No. 2, pp. 157-163, 1981.
     

Return to H-DRILL homepage