New transducer to monitor fatigue crack propagation

Conference · · TMS (The Metallurgical Society) Paper Selection; (USA)

OSTI ID:5446513

Liaw, P K; Hartmann, H R; Logsdon, W A ^[1]

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1. Westinghouse R D Center, Pittsburgh, PA (USA)

A sputter deposition technique has been successfully used to fuse atomically a high-temperature DC transducer, in the form of a thin film Krak-Gage, directly onto a test specimen for developing fatigue crack propagation rate data. The rates of fatigue crack growth measured by this technique are in good agreement with those measured by the compliance method at 288 and 427 C. The data acquisition and analysis are automated by interfacing with a computer, which saves costly labor associated with fatigue crack growth tests. This new development, based on thin film sputtering technology, is expected to enable researchers to conduct fatigue and fracture mechanics testing in various adverse high-temperature environments.

• OSTI ID: 5446513
• Report Number(s): CONF-840909--
• Conference Information: Journal Name: TMS (The Metallurgical Society) Paper Selection; (USA) Journal Volume: 56
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420500* -- Engineering-- Materials Testing
ALLOYS
COMPARATIVE EVALUATIONS
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
CRACK PROPAGATION
DATA ACQUISITION
DEPOSITION
ELEMENTS
FATIGUE
FRACTURE MECHANICS
MEASURING METHODS
MECHANICAL PROPERTIES
MECHANICS
METALS
MONITORING
SPUTTERING
TECHNOLOGY ASSESSMENT
TRANSDUCERS