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lattice vibration spectrum

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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
... temperatures • Cyclic stress exceeded the endurance limit of the material• Check for proper strength, surface finish, assembly, and operation• Prior damage by mechanical or corrosion modes may have initiated cracking• Alignment, vibration, balance• High cycle low stress: large fatigue zone; low cycle high...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.9781627083959
EISBN: 978-1-62708-395-9
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
... cracking • Alignment, vibration, balance • High cycle low stress: large fatigue zone; low cycle high stress: small fatigue zone • Mild overheating and/or mild overstressing at elevated temperature • Unstable microstructures and small grain size increase creep rates • Ruptures occur after long exposure...
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
... loading is the comparison of the stress spectrum for the considered operation period with the S - N curve ( Eq 5 ). The spectrum (number of cycles on different stress levels) is generated from the stress-time or strain-time cycles by application of different counting methods. The superior method...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003522
EISBN: 978-1-62708-180-1
... are involved in vibration or very small relative motion at high frequency. Generally, corrosion is also involved, because the small particles of material that are removed expose fresh material during the small-amplitude motion oxidation. A telltale sign of fretting in materials that oxidize is the development...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006757
EISBN: 978-1-62708-295-2
... in such circumstances. A special case of wear is fretting, in which contacting surfaces are involved in vibration or very small relative motion at high frequency. Generally, corrosion is also involved, because the small particles of material that are removed expose fresh material during the small-amplitude-motion...
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
... loading? What was the spectrum? What was the failure criterion? If there were runouts, how were they handled and represented? An example of what should be considered important as supporting facts can be found in ASTM E 468, “Presentation of Constant Amplitude Fatigue Test Results for Metallic...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006923
EISBN: 978-1-62708-395-9
... modulus of material can be measured over time. Fig. 3 Typical dynamic mechanical spectrum of high-temperature epoxy resin system. G ′, shear modulus; G ″, loss modulus In one common mode of operation, the temperature is increased in jumps of 5 to 10 °C (9 to 18 °F) and is held for 2 min...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.9781627083294
EISBN: 978-1-62708-329-4