Christopher J. Gilbert

63 Alamo Ave. · Berkeley, CA 94708 · (510) 486-5515 · (510) 486-4995 fax · cgleeb@uclink.berkeley.edu
 

Chris Testing
 Experience 
(Jan. 1997-Present)		 University of California, Berkeley, Berkeley, CA  
Postdoctoral Research Scientist, Dept. of Materials Science 
 
· Acquired industrial and government funding to study mechanical properties of novel bulk metallic glass alloys. 

· Supervised two Ph.D. students and three undergraduate research assistants. 

·Conducted detailed theoretical and experimental investigation of fracture and fatigue mechanisms of bulk metallic glasses. Communicated results to industrial partners and at international conferences. 

· Organized a focused symposium on the reliability of ceramics and glasses at a major international conference.  

· Developed techniques to measure fracture toughness and cyclic fatigue properties of pyrolitic carbon heart valves for several major biomedical device companies.  

· Refined life-prediction protocols for the safe use of replacement heart valves. 

 
(June 1995 - Aug. 1995)  National Research Institute for Metals, Tsukuba, Japan  
National Science Foundation Research Fellow  
  · Collaborated with Japanese researchers to characterize fatigue crack growth in Al2O3 at elevated temperatures. 

· Established contacts and toured industrial, government, and university research facilities throughout Japan. 

· Intensive language and cultural training.

  
Education 
(Aug. 1991 -   Dec. 1996) 		 University of California, Berkeley, Berkeley, CA 
Ph.D. in Materials Science and Engineering, December 1996   

Minors in Mathematics and Mechanical Engineering  

Dissertation: Ambient and Elevated Fracture and Cyclic-Fatigue Properties of Tough Ceramics  

Advisor: Professor Robert O. Ritchie  

GPA: 3.88/4.00 

· Developed procedures to evaluate fracture and cyclic-fatigue properties of ceramics and composites at room and elevated temperatures, along with a micro-mechanical model of crack advance and cyclic degradation. 

· Wrote sections of two funded grant proposals to the US National Science Foundation. 

· Initiated an international collaborative research project with scientists at the Korean Advanced Institute for Science and Technology, Taejon, Korea.  

· Supervised and trained four undergraduate research assistants. 

· Assisted in the instruction of an upper-division undergraduate class on the mechanical behavior and reliability of materials. 

· Received a university teaching award as an outstanding graduate student instructor. 

· Experienced with the following experimental techniques: mechanical testing procedures on hydraulic and screw-driven load frames; air and vacuum furnaces; scanning electron microscopy; transmission electron microscopy; x-ray diffraction; atomic force microscopy; finite element analysis; life-prediction methodologies.

  
(Aug. 1987 - May 1991) Carnegie Mellon University, Pittsburgh, PA 
B.S. with Honors in Metallurgical Engineering & Materials Science, May 1991  

Minor in Biomedical Engineering 

GPA: 3.90/4.00 
 
 
Honors
Engineering Foundation Conference Fellowship
Gordon Conference Fellowship
Regents of the University of California Fellowship
Graduate Student Instructor Award
First Prize, ASM Student Paper Competition
A. L. and E. R. Repecka Scholarship
Andrew Carnegie Scholar
Outstanding Senior Award, 1991
Allen D. Wilson Memorial Scholarship
Robert G. McCurdy Scholarship
Lankford Scholarship

Professional
Materials Research Society
American Society of Materials

Societies
American Ceramic Society
The Minerals, Metals & Materials Society
Carnegie Mellon University Admissions Council

  Archival Journal Publications

C. J. Gilbert, J. M. McNaney, R. H. Dauskardt, and R. O. Ritchie, "Back-Face Strain Compliance and Electrical-Potential Crack Length Calibrations for the Disk-Shaped Compact-Tension DC(T) Specimen," Journal of Testing and Evaluation 22, 117 (1994).

C. J. Gilbert, R. H. Dauskardt, R. W. Steinbrech, R. N. Petrany, and R. O. Ritchie, "Cyclic Fatigue in Monolithic Alumina: Mechanisms for Crack Advance Promoted by Frictional Wear of Grain Bridges," Journal of Materials Science 30, 643 (1995).

C. J. Gilbert, R. H. Dauskardt, and R. O. Ritchie, "Behavior of Cyclic Fatigue Cracks in Monolithic Silicon Nitride," Journal of the American Ceramic Society 78, 2291 (1995).

J. J. Cao, W. J. MoberlyChan, L. C. De Jonghe, C. J. Gilbert, and R. O. Ritchie, "In Situ Toughened Silicon Carbide With Al-B-C Additions," Journal of the American Ceramic Society 79, 461 (1996).

C. J. Gilbert, J. J. Cao, W. J. MoberlyChan, L. C. De Jonghe, and R. O. Ritchie, "Cyclic Fatigue and Resistance-Curve Behavior of an In Situ Toughened Silicon Carbide With Al-B-C Additions," Acta Materialia 45, 3199 (1996).

C. J. Gilbert, R. H. Dauskardt, and R. O. Ritchie, "Microstructural Mechanisms of Cyclic Fatigue Crack Propagation in Grain Bridging Ceramics," Ceramics International 23, 413 (1997).

C. J. Gilbert, J. J. Cao, L. C. De Jonghe, and R. O. Ritchie, "Crack-Growth Resistance-Curve Behavior in Silicon Carbide: Small versus Long Cracks," Journal of the American Ceramic Society 80, 2253 (1997).

C. J. Gilbert and R. O. Ritchie, "Mechanisms of Cyclic Fatigue-Crack Propagation in a Fine-Grained Alumina Ceramic: Role of Crack Closure," Fatigue and Fracture of Engineering Materials and Structures 20, 1453 (1997).

C. J. Gilbert, R. O. Ritchie, and W. L. Johnson, "Fracture Toughness and Fatigue-Crack Propagation in a Zr-Ti-Ni-Cu-Be Bulk Metallic Glass," Applied Physics Letters 71, 476 (1997).

C. J. Gilbert, J. M. Lippmann, and R. O. Ritchie, "Fatigue of a Zr-Ti-Cu-Ni-Be Bulk Amorphous Metal: Stress/Life and Crack-Growth Behavior," Scripta Materialia 38, 537 (1998).
 
C. J. Gilbert and R. O. Ritchie, "On the Quantification of Bridging Tractions During Subcritical Crack Growth Under Monotonic and Cyclic Fatigue Loading in a Grain-Bridging Silicon Carbide Ceramic," Acta Materialia 46, 609 (1998).

V. Schroeder, C. J. Gilbert, and R. O. Ritchie, "Comparision of the Corrosion Behavior of a Bulk Amorphous Metal, Zr41.2Ti13.8Cu12.5Ni10Be22.5, With Its Crystallized Form," Scripta Materialia 38, 1481 (1998).

C. J. Gilbert and R. O. Ritchie, "Transient Fatigue-Crack Growth Behavior in a Monolithic Silicon Nitride Ceramic," Engineering Fracture Mechanics 60, 303 (1998).

C. J. Gilbert, V. Schroeder, and R. O. Ritchie, "Mechanisms for Fracture and Fatigue-Crack Propagation in a Bulk Metallic Glass," Metallurgical and Materials Transactions A, submitted March 1998.

C. J. Gilbert, J. W. Ager III, and R. O. Ritchie, "Raman Spectroscopy Measurements of Internal Residual Stresses in Polycrystalline Silicon Carbide," Journal of the American Ceramic Society, submitted March 1998.

C. J. Gilbert, J. W. Ager III, V. Schroeder, J. Lloyd, J. Graham, and R. O. Ritchie, "Light Emission during the Dynamic Fracture of Zr-Ti-Ni-Cu-Be Bulk Metallic Glass," in preparation, October 1998.

 

 

Conference Proceedings

C. J. Gilbert, R. O. Ritchie, J. J. Cao, W. J. MoberlyChan, and L. C. De Jonghe, "Cyclic Fatigue Crack Growth in a Novel, High-Toughness SiC at Ambient and Elevated Temperatures," in Fatigue ?96, Proceedings of the 6th International Congress on Fatigue, G. Lüterjing and H. Nowack, eds., Permagon Press, Oxford, UK, Vol III, 1645 (1996).

R. O. Ritchie and C. J. Gilbert, "Toughened Silicon Carbides for High Temperature Use," in Mechanical Behaviour of Materials at High Temperatures, C. Moura Branco, R. O. Ritchie, and V. Sklenicka, eds., Kluwer, Dordrecht, The Netherlands, 445 (1996).
 
W. J. MoberlyChan, R. M. Cannon, L. H. Chan, J. J. Cao, C. J. Gilbert, R. O. Ritchie, and L. C. De Jonghe, "Microstructural Development to Toughen SiC," in Covalent Ceramics III - Science and Technology of Non-Oxides, Proceedings of the Materials Research Society, G. S. Fischman, A. F. Hepp, P. N. Kumta, A. E. Kaloyesos, and J. J. Sullivan, eds., Materials Research Society, Pittsburgh, PA, Vol. 40, 257 (1996).
 
K. T. Venkateswara Rao, C. J. Gilbert, and R. O. Ritchie, "Damage Tolerance in Intermetallic and Ceramic Materials at Ambient and Elevated Temperatures: Role of Extrinsic vs. Intrinsic Mechanisms," in Processing and Design Issues in High Temperature Materials, N. S. Stoloff and R. H. Jones, eds., The Minerals, Metals and Materials Society, Warrendale, PA, 209 (1996).

C. J. Gilbert and R. O. Ritchie, "Cyclic Fatigue and Resistance-Curve Toughening in In Situ Toughened Silicon Carbide at Ambient to Elevated Temperatures," in Composites and Functionally Graded Materials, T. S. Srivatsan, W. Jones, et. al., eds., American Society of Mechanical Engineers, New York, MD-Vol. 80, 393 (1997).

W. J. MoberlyChan, J. J. Cao, C. J. Gilbert, R. O. Ritchie, and L. C. De Jonghe, "The Cubic-to-Hexagonal Transformation to Toughen SiC," in Ceramic Microstructure: Control at the Atomic Level, A. P. Tomisia and A. Glaeser, eds., Plenum Press, New York, 177 (1998).
 
C. J. Gilbert, Y. S. Han, D. K. Kim, and R. O. Ritchie, "Anomalous Cyclic Fatigue-Crack Propagation Behavior of Small Cracks in Monolithic, Grain-Bridging Ceramics," in Proceedings of the 9th CIMTEC, World Ceramics Congress and Forum on New Materials, Florence, Italy, June 14-19, 1998.
 

Invited Presentations

C. J. Gilbert, R. H. Dauskardt, and R. O. Ritchie, "Microstructural Mechanisms of Cyclic Fatigue Crack Propagation in Grain Bridging Ceramics," Eighth CIMTEC-World Ceramics Congress and Forum on New Materials, Florence, Italy, June 1994.

C. J. Gilbert, R. O. Ritchie, and W. L. Johnson, "Fracture and Cyclic-Fatigue Crack Growth Behavior of Advanced Structural Materials," Agency for Defense Development, Taejon, Korea, April 1997.

C. J. Gilbert and R. O. Ritchie, "Evaluation of Bridging Tractions During Subcritical Monotonic and Fatigue-Crack Growth in a High-Toughness SiC," 99th Annual Meeting of the American Ceramic Society, Cincinnati, OH, May 1997.
 

Research Presentations

C. J. Gilbert, R. H. Dauskardt, and R. O. Ritchie, "Cyclic Fatigue in Grain-Bridging Ceramics," Poster Presented at the Gordon Conference on Solid State Studies in Ceramics, New London, NH, August 1993.

C. J. Gilbert, R. H. Dauskardt, and R. O. Ritchie, "Cyclic Fatigue in Monolithic Alumina and Silicon Nitride," 96th Annual Meeting of the American Ceramic Society, Indianapolis, IN, April 1994.

C. J. Gilbert, J. J. Cao, W. J. MoberlyChan, L. C. De Jonghe, and R. O. Ritchie, "Ambient and Elevated-Temperature Cyclic Fatigue-Crack Propagation Behavior in Silicon Carbide Composites," 97th Annual Meeting of the American Ceramic Society, Cincinnati, OH, April 1995.

C. J. Gilbert, R. O. Ritchie, J. J. Cao, W. J. MoberlyChan, and L. C. De Jonghe, "Issues in the Reliability and Fracture of Toughened Ceramics at Room and High Temperatures," Research Center for Advanced Science and Technology, University of Tokyo, Tokyo, Japan, July 1995.

C. J. Gilbert, J. J. Cao, W. J. MoberlyChan, L. C. De Jonghe, and R. O. Ritchie, "Elevated Temperature Resistance-Curve and Cyclic Fatigue Crack Propagation Behavior in Tough Ceramics," 98th Annual Meeting of the American Ceramic Society, Indianapolis, IN, April 1996.

C. J. Gilbert, R. O. Ritchie, J. J. Cao, W. J. MoberlyChan, and L. C. De Jonghe, "Ambient and Elevated Temperature R-Curve and Fatigue in High-Toughness SiC," Poster at the Gordon Conference on Solid State Studies in Ceramics, Meriden, NH, August 1996.

C. J. Gilbert, R. O. Ritchie, and W. L. Johnson, "Fracture and Cyclic-Fatigue in a Bulk Amorphous Metallic Alloy," National Research Institute for Metals, Tsukuba, Japan, April 1997.

C. J. Gilbert and R. O. Ritchie, "Transient Fatigue-Crack Growth in a Monolithic Silicon Nitride," 99th Annual Meeting of the American Ceramic Society, Cincinnati, OH, May 1997.

C. J. Gilbert and R. O. Ritchie, "Fracture Toughness and Fatigue-Crack Propagation in a Zr-Ti-Ni-Cu-Be Bulk Metallic Glass," Annual Meeting of the Metals, Minerals, and Materials Society, Indianapolis, IN, September 1997.

C. J. Gilbert, Y. S. Han, D. K. Kim, and R. O. Ritchie, "Crack-Growth Behavior of Microstructurally Small Cracks in Toughened SiC Ceramics Sintered with Al2O3 and Y2O3," 100th Annual Meeting of the American Ceramic Society, Cincinnati, OH, May 1998.

C. J. Gilbert, Y. S. Han, D. K. Kim, and R. O. Ritchie, "Anomalous Cyclic Fatigue-Crack Propagation Behavior of Small Cracks in Monolithic, Grain-Bridging Ceramics," Ninth CIMTEC-World Ceramics Congress and Forum on New Materials, Florence, Italy, June 1998.