Aindrea L. McKelvey Campbell

EDUCATION

University of California--Berkeley

M.S. in Materials Science and Engineering, December 1996

Ph.D. in Materials Science and Engineering, September 1999

• University of Michigan--Ann Arbor
B.S.E. in Materials Science and Engineering, May 1993
Magna Cum Laude

EXPERIENCE

• Research assistant for Prof. R. O. Ritchie, at University of California--Berkeley, August 1993 - present.  Doctoral dissertation involves a study of fracture and fatigue-crack growth mechanisms of a nickel-based shape-memory alloy, Nitinol, at 37°C (i.e., human body temperature).  Industrial interest in Nitinol includes manufacturing endovascular stents for supplementation to current vascular surgery techniques.  Master's thesis research investigated the elevated temperature fatigue-crack growth and fracture toughness behavior of gamma based titanium aluminide intermetallic alloys. Of particular interest was the role of oxidation products in the crack wake resulting in extrinsic shielding and increased fatigue-crack growth resistance.
• Research fellow for Prof. M. F. Ashby and Dr. D. Cebon, at University of Cambridge, Cambridge ENGLAND, June - September 1995. Fracture and deformation studies of bitumen and bituminous composites.
• Research fellow for Prof. R. O. Ritchie, at University of California--Berkeley, June - August 1992. Studied fracture toughness of ductile phase toughened Nb/Nb₃Al composites.
• Graduate student instructor at University of California--Berkeley for undergraduate course entitled "Mechanical Behavior of Materials", Fall 1994. Assisted in preparing homework questions and exams, and grading. Lectured in the absence of the primary instructor.
• Research assistant for Prof. D. C. Van Aken at University of Michigan--Ann Arbor, January 1992 - June 1993. Investigated internal friction of Al/Si eutectic alloy with additions of Sr (submitted as undergraduate thesis). Studied nitride strengthening mechanism in 201 series stainless steels. Investigated damping behavior of shape memory alloy Cu-12Al-8Zn.
• Summer Intern for Chrysler Corporation at Warren Stamping Plant, Warren, MI, May - August 1991. Performed press and die capability studies to standardize manufacturing process.

CONSULTING

Engineering consultant for several San Francisco Bay Area companies, April 1995 - present.  Work includes both experimental mechanical behavior and electrochemical testing, and design consultations for improvement of mechanical performance.

SKILLS

Experienced in metallography, optical microscopy, scanning and transmission electron microscopy, x-ray diffraction and spectroscopy, Auger spectroscopy, focused ion beam sputtering, corrosion polarization characterization, and mechanical testing of materials (MTS and Instron controllers). Experience preparing 201 stainless steel, Al-12Si, MoSi₂ and gamma based TiAl transmission electron microscopy samples by using electro-polishing and ion milling techniques. Experience casting and arc-melting Al-12Si and Cu-12Al-8Zn shape memory alloy.

HONORS

• National Science Foundation Graduate Research Fellowship Recipient, 1993-1996 appointment
• Mentored Research Fellowship, UC--Berkeley 1996-1997 appointment
• Chancellor’s Predoctoral Fellowship, UC--Berkeley, 1997-1999 appointment
• NSF Ford Foundation Graduate Fellowship, awarded 1993-1996 but not accepted
• S.U.P.E.R.B. Fellow at UC--Berkeley, 1992
• Engineering Achievement Award, UM--Ann Arbor, awarded four times annually, 1989-1993
• Chrysler Corporation Scholarship, awarded 1991-1992
• Marian Sarah Parker Scholars Program participant, 1991-1992

PUBLICATIONS

• A. L. McKelvey and R. O. Ritchie, “Fatigue-crack propagation in Nitinol, a shape-memory and superelastic endovascular stent material”; to be published in Journal of Biomedical Materials Research 1999.
• A. L. McKelvey and R. O. Ritchie, “On the temperature dependence of the superelastic strength and the predicition of the theoretical uniaxial transformation strain in Nitinol”; to be published in Philosophical Magazine A 1999.
• A. L. McKelvey and R. O. Ritchie, “Fatigue-crack growth in the endovascular stent material Nitinol”; to be published in Advanced Materials, Coatings, and Biological Cues for Medical Implants, Materials Research Society Proceedings, November 30 – December 4, 1998.
• A. L. McKelvey, K. T. Venkateswara Rao, R. O. Ritchie, "High temperature fracture and fatigue-crack growth behavior of an XD gamma based titanium aluminide intermetallic alloy"; submitted to Metallurgical and Materials Transactions, 1998.
• A. L. McKelvey, K. T. Venkateswara Rao, R. O. Ritchie, "On the anomalous temperature dependence of fatigue-crack growth in g-based titanium aluminides"; Scripta Metallurgica et Materialia, vol. 37:11, p.1797, 1997.
• K. Badrinarayanan, A. L. McKelvey, K. T. Venkateswara Rao, R. O. Ritchie, "Fracture and fatigue-crack growth behavior in ductile-phase toughened molybdenum disilicide: effects of niobium wire vs. particulate reinforcements"; Metallurgical and Materials Transactions, vol. 27A, p. 3781, 1996.
• A. L. McKelvey, "Retrograde Solubility in Semiconductors"; Metallurgical and Materials Transactions , vol. 27A, p. 2704, 1996.
• A. L. McKelvey, J. P. Campbell, K. T. Venkateswara Rao, R. O. Ritchie; "High Temperature Fatigue Crack Growth Behavior in an XD g-TiAl Intermetallic Alloy", in Fatigue '96, Proceedings of the Sixth International Conference on Fatigue, Berlin, Germany, 1996.
• A. L. McKelvey, D. Cebon, A. C. Collop, and M. F. Ashby; "An investigation of fracture of bituminous composites", University of Cambridge Technical Report, CUED/C-MATS/TR 228, Cambridge, UK, 1996.
• J. P. Campbell, A. L. McKelvey, S. Lillibridge, K. T. Venkateswara Rao, R. O. Ritchie; "Fracture and fatigue in gamma based TiAl alloys with fine lamellar microstructure: long and small crack behavior", Proceedings of the 3rd International Symposium on Deformation and Fracture of Ordered Intermetallic Materials, TMS, Cincinnati, OH, pp. 141-157, 1996.

INVITED PRESENTATIONS

• A. L. McKelvey, J. M. McNaney, A. W. Thompson, and R. O. Ritchie; "Statistical modeling of brittle fracture in titanium aluminide alloys", Deformation and Fracture of Ordered Intermetallic Materials IV: Titanium Aluminides, TMS Materials Week '96, Cincinnati, OH, 1996.

CONFERENCE PRESENTATIONS

• A. L. McKelvey and R. O. Ritchie; “Fatigue-Crack Growth in the Superelastic Endovascular Stent Material  Nitinol”, Advanced Materials, Coatings, and Biological Cues for Medical Implants, MRS Fall Meeting ’98, Boston, MA, November 30 – December 4, 1998.
• A. L. McKelvey and R. O. Ritchie, "Mechanisms of fracture and fatigue-crack propagation in the shape memory alloy TiNi", Damage Processes in Advanced Materials:  Intermetallics and Hydrogen Effects, TMS Fall Meeting '98, Chicago, IL, 11-15 October 1998.
• A. L. McKelvey, K. T. Venkateswara Rao, and R. O. Ritchie; "Environmental effects on high temperature fatigue and fracture of an XD gamma titanium aluminide", Deformation and Fracture of Ordered Intermetallic Materials III: Titanium Aluminides, TMS Spring Meeting, Anaheim, CA 1996.