Is there anything of practical value hidden amongst the composite toughening theories : A Jim Mueller prospective

Conference · Mon Jan 01 00:00:00 EST 1990

DOI:https://doi.org/10.1002/9780470313008.ch1· OSTI ID:6718847

Gac, F D

Numerous theories have been developed over the last three decades for explaining the toughening behavior of discontinuous fiber reinforced brittle matrix composites. The issue is the practical engineering utility of these theories. Upon compiling a table of fiber parameters that are identified in the predominant toughening mechanisms, a number of important features become evident for achieving high toughnesses. First, all of the mechanisms indicate that a high fiber volume fraction is desirable. Second, residual stresses appear to influence all of the composite toughening mechanisms. Third, the highest fiber tensile strength is preferred. Finally, fiber diameter and fiber-matrix interfacial shear strength are also important, but both are composite system and toughening mechanism specific. 25 refs., 13 figs., 1 tab.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: DOE/MA
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6718847
• Report Number(s): LA-UR-90-2431; CONF-900160-4; ON: DE90014905
• Resource Relation: Journal Volume: 11; Conference: 14. annual conference on composites and advanced ceramics, Cocoa Beach, FL (USA), 14-17 Jan 1990
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPOSITE MATERIALS
MECHANICAL PROPERTIES
REINFORCED MATERIALS
CERAMICS
CRACK PROPAGATION
DUCTILITY
RESIDUAL STRESSES
SILICON CARBIDES
CARBIDES
CARBON COMPOUNDS
MATERIALS
SILICON COMPOUNDS
STRESSES
TENSILE PROPERTIES
360603* - Materials- Properties
360203 - Ceramics
Cermets
& Refractories- Mechanical Properties
360602 - Other Materials- Structure & Phase Studies