John Ruschau has nearly 30 years of mechanical testing experience on a wide variety of materials. His testing background includes most standard testing methodologies including but not limited to, tension, compression, creep, stress corrosion cracking, bearing, shear, constant amplitude and variable amplitude fatigue, low-cycle fatigue, fracture toughness, and fatigue crack growth rate.

The type of materials that John has experience in include structural aluminums, titanium alloys, high strength steels, nickel-based superalloys, and polymeric, ceramic, and metal matrix composites systems.

John has written over 100 papers and evaluation reports on such topics as the influence of foreign object damage (FOD) on fatigue behavior; hard chrome alternative technologies; surface treatments to enhance fatigue behavior; fatigue crack growth and fracture related properties of advanced aluminum alloys; and joining technologies such as friction stir welding and adhesive bonding.

John has served in the past as chairman of ASTM task groups on fatigue crack growth rate testing and non-visual crack length measurement methodologies. He is currently the ASTM Subcommittee Chairman on Subcritical Crack Growth (ASTM E08.06).

Education:

M.S., Mechanical Engineering, University of Dayton, 1979
Bachelor of Mechanical Engineering, University of Dayton, 1973

Affiliations:

Registered Professional Engineer (P.E.), Ohio
ASTM International (Fellow, 2002)
ASM International