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high-modulus graphite fibers

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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003572
EISBN: 978-1-62708-180-1
... off or pulling out of the reinforcing phase. High-modulus fibers are more effective in wear reduction than the high-strength fibers. Moreover, the higher the modulus of fiber or composite, the less is the wear. The higher the aspect ratio of the reinforcement, the lower is the wear. For a typical...
Book Chapter

Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006790
EISBN: 978-1-62708-295-2
..., or alternatively, increasing their fracture toughness, leads to lower wear rates ( Ref 7 , 10 ). Abrasive wear mechanisms involving plastic deformation, cutting, and fragmentation occur predominantly in materials with relatively high elastic modulus, that is, metals, ceramics, and rigid polymers...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003560
EISBN: 978-1-62708-180-1
... where E is the elastic modulus and σ y is the flow stress of the non-work-hardened material. Decreasing E /σ y favors a cutting mechanism, in which a high proportion of material is removed as microchips. Increasing the hardness of the wear material has a similar effect, as shown in Fig. 10...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003543
EISBN: 978-1-62708-180-1
... was secondary• Short-term, high-temperature, high-stress rupture has ductile appearance (see creep) • Load exceeded the dynamic strength of the part• Check for proper alloy and processing as well as proper toughness, grain size• Loading direction may show failure was secondary or impact induced• Low...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006778
EISBN: 978-1-62708-295-2
... by hardness check or destructive testing, chemical analysis • Loading direction may show failure was secondary • Short-term, high-temperature, high-stress rupture has ductile appearance (see creep) • Load exceeded the dynamic strength of the part • Check for proper alloy and processing as well as proper...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006806
EISBN: 978-1-62708-329-4
... the heat-flow rate. The third is to reinforce the polymer with a material that has high thermal conductivity, such as carbon fibers, graphite, and molybdenum disulfide (MoS 2 ). The third solution to the thermal problem also offers resistance to cold flow. For these purposes, the polymer can be filled...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006800
EISBN: 978-1-62708-329-4
... Static Repeated Impact Tension Compression Shear Low Room High Brittle fracture X X X X … … X X … Charpy V-notch transition temperature. Notch toughness. K Ic toughness measurements Ductile fracture (a) X … … X … X … X X Tensile strength. Shearing...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003501
EISBN: 978-1-62708-180-1
... properties, because mechanical and physical properties can be severely altered by environmental factors. Very specific environments are often considered, including extremely corrosive high-temperature or high-pressure applications. Design Constraints—What It Cannot Be Design constraints are industry...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006782
EISBN: 978-1-62708-295-2
... anodes include high-silicon cast irons, graphite, polymeric-coated wires, precious metals, lead alloys, and ceramics. Each material has specific applications. Detailed information regarding the application of impressed-current anodes is provided in Ref 13 . Impressed-current cathodic protection must...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006794
EISBN: 978-1-62708-295-2
... for Studying the Synergy Effects of Tribocorrosion Interacting with 4-Point Static and Cyclic Bending , Wear , Vol 271 , 2011 , p 2978 – 2990 10.1016/j.wear.2011.07.002 10. Maruyama N. , Hiromoto S. , Akiyama E. , and Nakamura M. , Fretting Fatigue Behaviour of Ni-Free High...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006829
EISBN: 978-1-62708-295-2
... of tribological transformed structure, or TTS). Adapted from Ref 42 . Reprinted with permission from Elsevier Fig. 16 Comparison between metals and ceramic coatings fretted against an alumina ball for similar lading conditions. HSS, high-strength steel. Adapted from Ref 42 Fig. 17...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
..., cleavage across a grain on a single plane would be expected to result in smooth fracture surfaces. Such results are sometimes observed in high-purity, single-crystal specimens but are seldom seen in commercial engineering materials. Commercial engineering materials contain both a distribution of inclusions...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003538
EISBN: 978-1-62708-180-1
... Alternately, cleavage across a grain on a single plane would be expected to result in smooth fracture surfaces. Such results are sometimes observed in high-purity single-crystal specimens but are seldom seen in commercial engineering materials. Commercial engineering materials contain both a distribution...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003544
EISBN: 978-1-62708-180-1
... if continued for a large proportion of the normal life of a material. However, this is not true for a high overstress. Advantages and Limitations The stress-life approach seems best applied to components that look like the test samples and are approximately the same size (this satisfies the similitude...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006779
EISBN: 978-1-62708-295-2
... in regions of high stresses and strains, the subsequent crack growth mechanisms, and final fracture. They have also contributed to the optimization of materials, manufacturing, and component design as well as to the conduction of a proper failure analysis. Methods and material characteristics for fatigue...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006803
EISBN: 978-1-62708-329-4