Fatigue crack propagation: new tools for the study of an old problem

Journal Article · Thu Nov 01 00:00:00 EST 1979 · J. Met.; (United States)

DOI:https://doi.org/10.1007/BF03354564· OSTI ID:6929343

Davidson, D L; Lankford, J

To study the dynamics of fatigue-crack propagation, a special cyclic-loading stage was constructed for the scanning-electron microscope in order to utilize its high resolution and field depth. This servocontrolled electrohydraulic device can apply 1000 lb of force statically or 850 lb of tensile force dynamically at rates of up to 5 Hz. Operated at television scan rates, the tool allows the dynamic study of crack-tip plasticity through video recording.

• OSTI ID: 6929343
• Journal Information: J. Met.; (United States), Vol. 31
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
NATURAL GAS DISTRIBUTION SYSTEMS
PIPELINES
CRACK PROPAGATION
FATIGUE
NATURAL GAS
SCANNING ELECTRON MICROSCOPY
SERVOMECHANISMS
TELEVISION
CONTROL EQUIPMENT
ELECTRON MICROSCOPY
ENERGY SOURCES
ENERGY SYSTEMS
EQUIPMENT
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
MECHANICAL PROPERTIES
MICROSCOPY
032000* - Natural Gas- Transport
Handling
& Storage