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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
...-matrix composite and tough-matrix composite failures. It explains the different types of composite failure mechanisms such as thermoplastic-matrix composite failure mechanisms, untoughened thermoset-matrix composite failure mechanisms, toughened thermoset-matrix composite failure mechanisms, dispersed...
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 intense matrix plastic deformation near the crack tip and ultimately, composite fracture. In order to predict the fracture toughness, some estimate of the flow stress and the critical displacement is needed. This was modeled in Ref 71 and 72 by considering that the periphery of fractured fiber tips...
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
...General trends in room- temperature strength and toughness for ceramic-matrix composites with the addition of a discontinuous reinforcement phase Table 1 General trends in room- temperature strength and toughness for ceramic-matrix composites with the addition of a discontinuous reinforcement...
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
... 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 data of the DRA composites are summarized...
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
... 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 Indirect Methods Composite Laminate Tests Issues in the Use...
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
... and debonding and sliding along the fiber–matrix interfaces. The inelastic strains impart a high toughness to CFCCs in essentially the same manner that dislocation plasticity imparts high toughness to metallic alloys. That is, the inelasticity reduces the local levels of stress around strain-concentrating...
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: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002418
EISBN: 978-1-62708-193-1
... on the “tough,” transverse planes, and ω and χ are non-dimensional quantities that depend only on the aspect ratio and orientation of the ligaments formed by debonding ( Fig. 6 ). anisotropic grain bridging ceramic-matrix composites density ductility elastic modulus inelastic strain interface...
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
... to their low toughness, 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...
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
... testing of fiber-dominated metal matrix composites. All dimensions are in millimeters. Source: Ref 16 Fig. 6 Commonly observed, acceptable failure modes of (a) 0°, and (b) 90° carbon/epoxy unidirectional composites Fig. 7 Stress-strain response for a unidirectional [0] 8 glass...
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 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...
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
... compressive forming processes can shape the composite, the lower ductility and fracture toughness have limited its general application ( Ref 36 ). It is competitive for applications such as snow tire studs, which should be wear and corrosion resistant, as well as low cost. Metal-matrix composites offer...
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
... were added to increase 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...
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
...Comparative properties and costs of selected high-performance reinforcing fibers for polymer-matrix composites Table 1(a) Comparative properties and costs of selected high-performance reinforcing fibers for polymer-matrix composites Trade name Generic name Manufacturer Composition Ref...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003441
EISBN: 978-1-62708-195-5
... with them. Both National Aeronautics and Space Administration (NASA) and industry representatives have selected and standardized a set of five common tests for characterizing the toughness of fiber- resin composites. As the development of new, tougher thermoplastic-matrix resins is reduced to specific...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003448
EISBN: 978-1-62708-195-5
... g/cm 3 . Source: Ref 5 , 6 Survey of reinforcement morphology on the properties of Al-MMCs Table 18 Survey of reinforcement morphology on the properties of Al-MMCs Composite Tensile strength Modulus of elasticity Fracture toughness Density, g/cm 3 Coefficient of thermal...
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
... of cermets. Fig. 25 The correlation between the measured and calculated fracture toughness levels of WC-Co cermets having varying sizes and volume fractions of WC and cobalt Fig. 26 The effect of dispersoids on the fracture toughness of aluminum-base metal-matrix composites Fig...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006345
EISBN: 978-1-62708-179-5
... of which influence toughness. The highest toughness indicated in Fig. 29 is for an annealed or subcritically annealed ductile iron. The higher-strength, pearlitic-matrix irons have a ductile-to-brittle transition temperature in the notched impact test that is above room temperature. The ausferrite...
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
... initiate matrix cracks, which can 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...
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
... 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 standard (b...