Jim is available for consulting. Areas of expertise include:

• Stress waves and shock waves in solids and structures
• Effects of pulsed radiation environments (including X-rays, electrons and microwaves) upon materials and structures
• Nuclear weapons effects (especially for propulsion systems)
• Pyroshock effects (e.g. pinpullers, exploding bolts, separation charges)
• Non-lethal weapons technologies
• Time-domain computation of pulsed electromagnetic field sources.

Education:

• Ph.D., Physics, Lehigh University, 1967
• M.S., Physics, Lehigh University, 1964
• B.S., Engineering Physics, Lehigh University, 1958

Experience:

• 1996-1999 CONSULTANT - self-employed. Activities (part-time) for Maxwell Technologies-Physics International. Developed a computational model and predicted the radiated field for an EMP simulator. Review Commerce Business Daily for information relevant to Advanced Simulator Division. Work on proprietary project.
  
• 1995-1996 PHYSICS INTERNATIONAL COMPANY. Staff Physicist - Advanced Simulator Division. Principal investigator for nuclear hardness and survivability on Minuteman 3, Stage III Remanufacturing Program (subcontract with United Technologies Chemical Systems Division). Supported development of acoustic cannon concept. Provided administrative and marketing support to Division Manager.
  
• 1993-1995 PHYSICS INTERNATIONAL COMPANY. Staff Physicist - Electromagnetic Systems. Developed computational models and performed analyses for ATI Demo Program.
  
• 1990-1993 PHYSICS INTERNATIONAL COMPANY. Staff Physicist - Electromagnetic Systems. Program Manager for Advanced Concepts Program to develop improved above-ground pulsed radiation sources. Business development for nuclear weapons effects studies and development of above -ground nuclear weapons effects simulation techniques.
  
• 1987-1989 PHYSICS INTERNATIONAL COMPANY. Vice President and Director of Advanced Programs in the Tactical Systems Division. Business development and management of technology programs related to anti-armor, armor protection, and specialty warheads. Safety analyses for space-based nuclear isotopic power sources, and characterization of shock environments from pyrotechnic devices.
  
• 1979-1987 PHYSICS INTERNATIONAL COMPANY. Vice President and Director of Nuclear Effects Division. Overall management supervision of the Aerospace Systems Department, Shock Simulation Department, and Analysis and Computations Department. These departments were responsible for all experimental and analytical Nuclear Hardness and Survivability (NH&S) efforts within Physics International, including management of Peacekeeper Stages, I, III, and IV NH&S programs, Small ICBM Stages I and II and III NH&S Programs, underground nuclear test experiments, above-ground simulation of nuclear weapons X-ray effects, and the development of explosive simulators for nuclear cratering and ground motion.
  
• 1972-1979 PHYSICS INTERNATIONAL COMPANY. Manager of Radiation Effects Department. Supervised and coordinated experimental and analytical efforts in pulsed radiation effects upon materials and structures, constitutive relationships, equation-of-state of materials, vulnerability and survivability of aerospace systems.
  
• 1970-1972 PHYSICS INTERNATIONAL COMPANY. Senior Staff Scientist, Electron Beam Research and Technology Department. Supported and coordinated experimental and analytical efforts on programs related to the response and failure of materials and structures subjected to dynamic loading, equation of state of solids, radiation effects in materials, vulnerability and survivability of aerospace systems.
  
• 1968-1970 PHYSICS INTERNATIONAL COMPANY. Manager, Material Dynamics Group, Nuclear Radiation Effects Department. Supervised and coordinated programs studying radiation-induced material response and damage, radiation effects on propulsion and ordnance, vulnerability and survivability of aerospace systems.
  
• 1967-1968 PHYSICS INTERNATIONAL COMPANY. Principal investigator on programs dealing with radiation-induced spall and structural response, effects of radiation upon explosives and explosive components, piezoresistive pressure transducers, equation-of-state of solids.
  
• 1959-1962 UNITED STATES ARMY. Officer with supervisory responsibilities over ordnance vehicle maintenance and repair activities.
  
• 1958-1959 PHILCO CORPORATION, Landsdale, Pennsylvania. Engineer with responsibility for the encapsulation, environmental testing, and evaluation of silicon transistors on a pilot production line.

Publications:

"Propagation of Plastic Strain Pulses in Cylindrical Lead Bars," J. Appl. Phys. 39, 4004 (1968).

"Feasibility of Gruneisen Measurements Using Electron Beams," with A. Mazzella, PIFR-077, Physics International Company, San Leandro, California (1968).

"Thermal Shock Experiments and Analysis for Spartan System," PIFR-128 with P. Spence, G. Yonas and A. Mazzella, Physics International Company, San Leandro, California (1969).

"Summary of Chaff Tests," PIFR-109, Physics International Company, San Leandro, California, February 1969.

"Temperature and Heating Rate Effects on Dynamic Fracture," with T. Stefansky, Bulletin of the American Physical Society, Vol. 14, No. 12, p. 1171 (1969).

"Equation-of-State Investigation of Granular Explosives Using a Pulsed Electron Beam," with A. Mazzella and L. Avrami, Proceedings of the Fifth Symposium on Detonation, August 1970.

"Transient Radiation Vulnerability Levels for Primary Explosives," Radiation Effects, Vol. II, Air Force Weapons Laboratory, WLRX-70-306, December 1969, with L. Avrami, A. Klein and A. Mazzella.

"The Effects of Transient Radiation in Explosive Reactive Materials," Radiation Effects, Vol. II, Air Force Weapons Laboratory, WLRX-70-306, December 1969, with A. Klein, A. Mazzella and L. Avrami.

"Effects of a Radiation Pulse on Explosive Materials," Proceedings of the Second Annual Meeting of the Nuclear Survivability Working Group on Propulsion and Ordnance Systems, February 1971, with L. Avrami and A. Mazzella.

"Spartan Nuclear Vulnerability Testing," PIFR-138, Physics International Company, prepared for Bell Telephone Laboratories, May 1971 with G. Dunbar, et al.

"Effects of a Radiation Pulse Upon Primary Explosives," PIFR-129, Physics International Company, prepared for Picatinny Arsenal (1971) with A. Mazzella, L. Avrami and H. Jackson.

"Material Properties Measurements Using Pulsed Electron Beams," AMMRC-CR-71-9 and PIFR-174, July1971 with T. Stefansky, A. Mazzella, and K. Triebes.

"Dynamic Fracture Experiments Using High-Energy Pulsed Electron Beams," with T. Stefansky, DASA-2699, PIFR-108, July 1971.

"Temperature Induced Degradation of Mechanical Properties Following Instantaneous Heating," with T. Stefansky and K. Triebes, AFWL-TR-71-62, PIFR-211, June1971.

"Energy-Pressure Coupling in Heterogeneous Materials," PIIR-16-71, Physics International Company (1971).

"Thermal Degradation of Mechanical Properties for 6Al-4V and 13V-11Cr-3Al Titanium Alloys," PIFR-336, Physics International Company, prepared for Lawrence Livermore National Laboratory, August 1971 with K. Triebes and T. Stefansky.

"Dynamic Response of Composite Materials," AFWL-TR-71-157 and PIFR-272, Physics International Company, prepared for Air Force Weapons Laboratory, January 1972 with J. Reaugh, K. Seifert, F. Tuler, and M. Graham.

"Material Response Characterization of Several Spartan Materials to Pulsed Radiation Environments," PIFR-243, Physics International Company, prepared for McDonnell Douglas Astronautics Company, February 1972, with V. Bailey, G. Dunbar, V. Staggs, and S. Heurlin.

"Dynamic Response of Porous Materials to Electron Beam Deposition," with A. Mazzella and T. Stefansky, AFWL-TR-71-146, PIFR-216, June 1972.

"Stress Transducer with Extended Reading Time," PIIR-30-71, Physics International Company (1971).

"Equation of State and Shock Initiation Experiments on Explosives Using Pulsed Electron Beams," PITR-351, prepared for Picatinny Arsenal, May 1972 with E. V. Buck, and W.L.Shimmin.

"Degradation of Mechanical Properties Following Sudden Heating and Compressive Shock Loading," AFWL-TR-72-67 and PIFR-332, September 1972 with B. Stocking and G. Dunbar.

"Development of Techniques for Characterizing Brittle Materials Using Pulsed Electron Beams," with V. Bailey and C. Felts, PIFR-230 and AFWL-TR-72-73, January 1973.

"Pulsed Electron Beam Experiments to Investigate the Relation between Strength and Microstructure in Radiation Heated Materials," PIFR-362, Physics International Company, prepared for Ballistics Research Laboratories, Aberdeen Proving Ground, March 1973 with E. V. Buck.

"Brittle Materials Experiment," POR 6653-5, MISTY NORTH EVENT, Defense Nuclear Agency, August 1973, with V. Bailey and J. Case.

"Pulsed Electron Beam Experiments in Quartz Phenolic, Fused Silica, and Sapphire," PIFR-502, Physics International Company, prepared for Defense Nuclear Agency, October 1973 with S. Heurlin.

"Thermal Loading of Structural Materials," AFWL-TR-73-164 and PIFR-429, Physics International Company, January 1974. with K. Childers.

"Pressure-Energy Coupling, Sound Speed, and Shock Initiation Experiments on Explosives using Pulsed Electron Beams," with Louis Avrami and V. Buck, Picatinny Arsenal TR-4690 and PIFR-431, Physics International Company, March 1974.

"Material Response Technology on the Physics International Mylar Line," PIFR-423-1 and DNA 3448F, 1974 with F. K. Childers.

"Fused Quartz Experiments, HUSKY ACE EVENT," PIFR-356-3, Physics International Company, prepared for Air Force Weapons Laboratory, May 1974 with J. Case.

"Survivability/Vulnerability Studies for the MX Third Stage Motor," PISR-802, Physics International Company, prepared for Hercules, Inc., May 1975 with J. Case.

"OWL II Diode Study," PIFR-788, Physics International Company, prepared for Defense Nuclear Agency, June 1975 with F. K. Childers.

"Carbon-Carbon Thermal Structural Response Testing," AFWL-TR-74-330, Air Force Weapons Laboratory, October 1975 with F. K. Childers and E. V. Buck.

"Thermostructural Response of Cantilevered Titanium Alloy Beams Subjected to Pulsed Radiation Heating," PIFR-836, Physics International Company, prepared for Lockheed Missiles and Space Company, February 1976 with F. K. Childers and E. V. Buck.

"Hussar Sword Series, DINING CAR Event, Bonded Structures Experiment," PIFR-734, Physics International Company, prepared for Air Force Rocket Propulsion Laboratory, April 1976 with J. A. Case.

"Bonded Structures Experiments in HUSKY PUP," PITR-734, Physics International Company, and Project Officer's Report POR-6928, Air Force Rocket Propulsion Laboratory, September 1976 with J. A. Case.

"A Faraday Cup with Multiple Internal Filters and a Primary Current Monitor for Characterizing High Dose Pulsed Electron Beams," PIFR-835 and AFWL-TR-76-132, October 1976.with F. K. Childers.

"In Situ Stress Gauge Calibration," PIFR-755 and DNA 4254F, May 1977 with K. Seifert.

"Aluminum Ring Thermostructural Response Study," PIFR-930-1 and DNA 4155F, Physics International Company, San Leandro, CA., November 1977. with E. V. Buck.

"Thermostructural Response of Aluminum Annuli," PIFR-930-2 and DNA 4480, Physics International Company, San Leandro, CA., January 1978 with E. V. Buck.

"Electron Beam Conditioning of Carbon Phenolic Ablator Surface," with K. Triebes and C. Stallings, PIFR-1050, Physics International Company, and DNA 4522F, June 1978.

"Thermostructural Response of Cermet Annuli and Rings," PIFR-1148 and DNA-4689F, November 1978 with E. V. Buck.

"Calculated Response of an Underwater High Explosive Bubble Adjacent to a Rigid Wall," with G. Dunbar and S. Hancock, Shock and Vibration Symposium, October 14-16, 1986, sponsored by the Naval Surface Weapons Center.

"Computations of the Interaction of a Jet with Reactive Armor and of LRPs with a Monolithic Target," with G. Dunbar and S. Hancock, Proceedings Third TACOM Armor Coordination Conference for Light Combat Vehicles, February 17-19, 1987.

"Investigation of Countermeasures for Kinetic Energy Projectiles," PIFR-3730, Physics International Company, December 1987 with G. Dunbar, S. Hancock, and Z. Nizam-Aldine.

"Reactive Armor Technology Program", PITR-3718, Physics International Company, March 1988, prepared for FMC Corporation, with R. A. Flock, G. R. Dunbar, and A. W. York.

"Kinetic Energy Weapons," Final Report Project 500920641, IR&D 1988 Technical Plan, Physics International Company, April 1988 with M. Ferdman.

"Computer Models for Dynamic Material Interaction," Final Report Project 500220441, IR&D 1988 Technical Plan, Physics International Company, April 1988 with J. Case.

"Aboveground Test/Underground Test (AGT/UGT) Validation Program," PIFR-3232-D, Physics International Company, DNA-TR-88-116, May 1988 with R. Flock, R. Rodenberg, D. LePell, J. Case, B. Whitton, L. Vannucci, and D. Oliver.

"Small ICBM Critical Materials Study," PIFR-3372, Physics International Company, June 1988, Defense Nuclear Agency, DNA-TR-88-129, with R. Flock, L. Lasher, and D. Oliver.

"Pyroshock Source Characteristics Study," PIFR-3777, Physics International Company, NASA CR-183480, April 1989 with S. Hancock, G. Dunbar, P. Chao, and A. York.

"Advanced Concepts Program, Fourth Quarterly Report," PIQR 3992-04, Physics International Company, 16 February 1990, with J. Riordan, D. LePell, C. Deeney, J. Meachum, T. Nash, R. Prasad, I. Roth, and K. Childers.

"Advanced Concepts Program, Fifth Quarterly Report," PIQR 3992-05, Physics International Company, April 1990, with J. Riordan, D. LePell, C. Deeney, J. Meachum, R. Prasad, and K. Childers.

"Advanced Concepts Program, Sixth Quarterly Report," PIQR 3992-06, Physics International Company, August 1990, with J. Riordan, D. LePell, C. Deeney, J. Meachum, R. Prasad, and K. Childers.

"Electron-Beam Test Results of Hercules Small ICBM Materials," PITR 4257-03, Physics International Company, June 1991, with R. Flock, M. Ferdman, and M. Willey.

This page was updated in March 2006.

write me at

top of page