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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
... of nominally brittle materials. It describes toughening by various bridging mechanisms, as well as process zone effects and their interaction with the bridging rupture zone. The article explains the phenomena that give rise to exceptional toughness and notch-insensitive mechanical behavior. It provides...
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
... Abstract This article describes the dispersed-phase toughening of thermoset matrices by the development of multiphase-structure thermosetting matrices using rubber and/or thermoplastic materials. It discusses two main methods for manufacturing prepregs, namely, single-pass impregnation...
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Published: 01 January 1996
Fig. 6 Non-dimensional parameters that affect ligament toughening More
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Published: 01 January 1996
Fig. 7 Resistance curve for plastic zone toughening in the presence of a rupture zone More
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Published: 01 January 1996
Fig. 5 Toughening mechanism for ceramics: residual compression at the crack tip. Selected regions of a microstructure are induced to expand in the vicinity of the crack tip such that a local state of compression counteracts the externally applied tensile stress. More
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Published: 01 November 1995
Fig. 33 Toughening mechanisms in continuous-fiber-reinforced composites. (a) Initial debonding of fibers at the crack front, as well as fiber debonding and sliding in the crack wake. Source: Ref 147 . (b) Fiber pullout. Source: Ref 158 More
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Published: 01 January 2001
Fig. 1 Toughening mechanisms that can be activated in a discontinuously reinforced ceramic-matrix composite. Source: Ref 7 More
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009071
EISBN: 978-1-62708-177-1
... transfer molding, vacuum-assisted resin transfer molding, and resin film infusion. It explains the composite- and matrix-toughening methods for fiber-reinforced composites, such as dispersed-phase toughening and interlayer toughening. The article concludes with information on optical microscopy, which...
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
... of composite failure mechanisms such as thermoplastic-matrix composite failure mechanisms, untoughened thermoset-matrix composite failure mechanisms, toughened thermoset-matrix composite failure mechanisms, dispersed-phase and rubber-toughened thermoset-matrix composite failure mechanisms, and particle...
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Published: 01 January 1990
Fig. 4 Scanning electron micrograph of high-purity, zirconia-toughened alumina showing dispersed zirconia phase (white) within an alumina matrix More
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Published: 01 January 2000
Fig. 26 Comparison of fracture toughness for in situ toughened silicon nitride (SN251) as functions of temperature for chevron notched beam (CNB), single-edge precracked beam (SEPB), and single-edge V-notch beam (SEVNB) fracture test methods More
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Published: 01 January 2000
Fig. 12 Fatigue crack propagation behavior for a rubber-toughened epoxy. The addition of rubber decreases the slope, m , at high crack growth rates due toughening mechanisms and retarded crack growth. CTBN, carboxyl-terminated polybutadiene acrylonitrile rubber; MBS, methacrylate-butadiene More
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Published: 01 December 2004
Fig. 17 Scanning electron micrograph of a zirconia toughened ceramic (ZTC), thermally etched in air at 1300 °C (2730 °F). Lighter, tetragonal ZrO 2 grains are dispersed in the Al 2 O 3 matrix. The parallel arrays of facets within the grains are related to the ZTC crystallography. More
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Published: 01 December 2004
Fig. 12 Ultrathin section of a particle-modified interlayer-toughened composite material. Transmitted-light Hoffman modulation contrast, 20× objective More
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Published: 01 December 2004
Fig. 8 Cross section of a polished interlayer-toughened composite that was lightly etched showing height differences on the sample surface using reflected-light differential interference contrast. 10× objective More
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Published: 01 December 2004
Fig. 9 Cross sections of an interlayer-toughened composite material. (a) Bright-field illumination, 25× objective. (b) Same view but after the addition of a solvent-based laser dye (Magnaflux Zyglo, Magnaflux Corp.) to the sample surface. The laser dye is preferentially absorbed More
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Published: 01 December 2004
Fig. 15 Microcracks in the intraply region of an interlayer-toughened carbon fiber composite material that terminated at the interlayer region. Epi-fluorescence, 390–440 nm excitation, 25× objective More
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Published: 01 December 2004
Fig. 2 Micrograph of a carbon fiber composite material that was toughened using two rubber materials of different molecular weight. Two different phase morphologies are observed, corresponding to the different tougheners. Ultrathin section. Transmitted light, Hoffman modulation contrast, 40 More
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Published: 01 December 2004
Fig. 3 Dispersed-phase-toughened carbon fiber composite material that was sectioned at an oblique angle to obtain a larger view of the interlayer region. Large, irregular ases, with some phases spherical and hollow, were found in the interlayer area and extended into the intraply area More
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Published: 01 December 2004
Fig. 4 Dispersed-phase-toughened carbon fiber composite material that was sectioned at an oblique angle to obtain a larger view of the interlayer region. A complex morphology was revealed, which was also present in the intraply area. Ultrathin section. Transmitted light, differential More