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tough-matrix composite failures

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Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009081
EISBN: 978-1-62708-177-1
... Abstract This article describes methods for analyzing impact-damaged composites in the aircraft industry. These include C-scan and x-radiography methods and optical microscopy. The article reviews brittle-matrix composite and tough-matrix composite failures. It explains the different types...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003399
EISBN: 978-1-62708-195-5
... of unidirectional fiber reinforced metal matrix composites (MMCs). It discusses the elastic deformation and elastic-plastic deformation analysis of discontinuously reinforced MMCs. The article provides an overview of analysis of strength, fatigue, and fracture toughness for macromechanics fiber-reinforced...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003469
EISBN: 978-1-62708-195-5
... Abstract Interpretation of failures of ceramic-matrix composites, and in particular continuous fiber reinforced ceramic-matrix composites is complicated by the complex structure of the composite material. This article describes the failure characteristics and evidence of failure mechanisms...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003374
EISBN: 978-1-62708-195-5
... of fiber-matrix adhesion, but can also provide information about fiber-matrix failure mode and a method to measure the energy involved in fracture of the fiber-matrix interface. This last parameter is important in relating fiber- matrix adhesion to composite toughness. Direct Methods The direct...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003449
EISBN: 978-1-62708-195-5
... or more of these toughening mechanisms. The effect of these mechanisms on the room-temperature strength and fracture toughness of several DR-CMCs is presented in Table 1 . Fig. 1 Toughening mechanisms that can be activated in a discontinuously reinforced ceramic-matrix composite. Source: Ref 7...
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Published: 01 January 2001
Fig. 8 Comparison between the mode I and mode II fracture toughness of the three composite materials. The mode II fracture toughness is about three times higher than the mode I fracture toughness. The fiber-matrix adhesion decreases in the order AS-4C > AS-4 > AU-4. AU-4 and AS-4 exhibit More
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 June 2024
DOI: 10.31399/asm.hb.v12.a0006878
EISBN: 978-1-62708-387-4
... Abstract This article presents the failure of polymer-matrix composites and the methodology for fractography. It provides a detailed discussion on the types of translaminar, interlaminar, and intralaminar failures. The article also presents a discussion on the types of fatigue failures...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002414
EISBN: 978-1-62708-193-1
... Abstract This article reviews the tensile properties and toughness characteristics of discontinuously reinforced aluminum (DRA) composites in terms of particle spacing, particle size, volume fraction, matrix alloy, and matrix microstructure. Both fracture toughness data and impact toughness...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003400
EISBN: 978-1-62708-195-5
... field environmental degradation damage tolerance fracture analysis ONE OF THE KEY ATTRIBUTES of continuous fiber-reinforced ceramic composites (CFCCs) is their ability to undergo inelastic straining upon mechanical loading ( Ref 1 ). The mechanisms for these strains involve matrix cracking...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002478
EISBN: 978-1-62708-194-8
... fiber arrangement. (c) Twist, bend, and splay fiber arrangement Generic Composite Behavior The stress/strain and fracture behavior of uniaxial fiber-reinforced composites depends on the moduli and strains to failure of the constituents, the coupling between fiber and matrix, the residual...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003063
EISBN: 978-1-62708-200-6
... Increases in composite strength and toughness from coating fibers with BN. The coating prevents a strong bond between the fiber and matrix, allowing a crack to be deflected along the fiber-matrix interface. Source: Ref 37 Other coatings being investigated include silicates, metallic coatings (e.g...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003330
EISBN: 978-1-62708-176-4
... concludes with a discussion on the split-Hopkinson pressure bar test. compression testing fatigue testing fiber-reinforced composites flexure testing interlaminar failure mechanical properties mechanical testing nondestructive techniques shear testing split-hopkinson pressure bar test strain...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002418
EISBN: 978-1-62708-193-1
... a schematic illustration of a basic cell model to characterize the inelastic strains that occur in ceramic-matrix composites and their dependence on the interface friction. anisotropic grain bridging ceramic-matrix composites density ductility elastic modulus inelastic strain interface friction...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003311
EISBN: 978-1-62708-176-4
..., monolithic ceramics are prone to catastrophic failure and, thus, may be unsuitable for engineering applications that require high reliability. Ceramic matrix composites (CMCs), however, can provide significant improvement in fracture toughness and the avoidance of catastrophic failure ( Ref 1 , 2 , 3 , 4...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009080
EISBN: 978-1-62708-177-1
... the strain to failure of the primary phase and/or create a dispersed second phase, thereby enhancing the fracture toughness of the thermosetting matrix. These new matrices offered new design capabilities for composites in a variety of aircraft applications. To improve the damage tolerance of composite...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003352
EISBN: 978-1-62708-195-5
... Abstract Reinforcing fibers are a key component of polymer-matrix composites (PMCs), ceramic-matrix composites (CMCs), and metal-matrix composites (MMCs). This article discusses the mechanical and nonmechanical properties of these composites. It presents an overview of PMC, CMC, and MMC...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002379
EISBN: 978-1-62708-193-1
... variables on fracture toughness of steels, aluminum alloys, and titanium alloys. aluminum alloys brittle matrix-ductile phase composites crack propagation fracture mechanics fracture resistance fracture toughness high-strength steel metal-matrix composites structural alloys titanium alloys...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003443
EISBN: 978-1-62708-195-5
... Composite Materials Using a Sandwich Beam D 5528 Standard Test Methods for Mode I Interlaminar Fracture Toughness of Unidirectional Fiber-Reinforced Polymer-Matrix Composites D 6415 Standard Test Method for Measuring the Curved Beam Strength of a Fiber-Reinforced Polymer-Matrix Composite ISO...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003371
EISBN: 978-1-62708-195-5
... rapidly grow to failure if the fracture toughness of the matrix is low. The low ductility observed for [90] 4 MMCs is related to the low toughness of the titanium aluminide matrix. When the matrix possesses sufficient toughness, as in the case of SCS-6/Ti-15V-3Cr- 3Al-3Sn metal-matrix composites, room...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003380
EISBN: 978-1-62708-195-5
... of Unidirectional Fiber-Reinforced Polymer Matrix Composites,” D 5528-94a, Annual Book of ASTM Standards , ASTM , Vol 15.03 , 1994 , p 272 – 281 4. “Fibre-Reinforced Plastic Composites—Determination of Mode I Interlaminar Fracture Toughness, G Ic , for Unidirectionally Reinforced Material,” IS-15024...