Deducing mechanical properties due to interfaces from their acoustical response

Conference · Sun Jan 01 00:00:00 EST 1989

OSTI ID:6618253

Buck, O; Thompson, R B; Rehbein, D K; Brasche, L J.H.; Palmer, D D

The ultrasonic interrogation of a partially contacting interface provides details on the contact topology. In this paper this information is used to deduce important mechanical properties of structures containing fatigue cracks and diffusion bonds as specific examples of such interfaces. The information is sufficient to determine the residual stress distribution in the wake of the crack. These residual stresses produce a stress intensity factor which, in part, shields the crack from the externally applied stress intensity range and thus affects the fatigue crack propagation rate. For diffusion bonds in materials of low ductility, the information appears to be sufficient to determine the bond strength in uniaxial tension, using LEFM concepts. 20 refs., 6 figs.

• Research Organization: Ames Lab., Ames, IA (United States)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6618253
• Report Number(s): IS-M-623; CONF-890310-7; ON: DE90016704
• Resource Relation: Conference: 7. international conference on fracture (ICF-7), Houston, TX (USA), 20-24 Mar 1989
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
INTERFACES
MECHANICAL PROPERTIES
ULTRASONIC TESTING
CRACK PROPAGATION
DUCTILITY
FATIGUE
RESIDUAL STRESSES
ACOUSTIC TESTING
MATERIALS TESTING
NONDESTRUCTIVE TESTING
STRESSES
TENSILE PROPERTIES
TESTING
360103* - Metals & Alloys- Mechanical Properties
420500 - Engineering- Materials Testing