1-20 of 43 Search Results for

sustained-load threshold

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003243
EISBN: 978-1-62708-199-3
... stresses must be above some threshold value. The tensile stress may be residual stress resulting from heat treatment or fabrication of the metal, may be developed by external loading, or may be a combination of these conditions. Stress-corrosion cracking occurs under service conditions, which can...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006784
EISBN: 978-1-62708-295-2
... ppm may cause severe losses in tensile ductility and notched tensile strength in titanium alloys and may cause brittle delayed failure under sustained loading conditions. The sensitivity to hydrogen embrittlement from formation of hydrides varies with alloy composition and is reduced substantially by...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003225
EISBN: 978-1-62708-199-3
... sustain the applied load. Final fracture, which is the result of a single overload, can be brittle or ductile, or a combination of the two. The most characteristic feature usually found on fatigue-fracture surfaces is beach marks, which emanate from a point that corresponds to the fatigue-crack...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.9781627081801
EISBN: 978-1-62708-180-1
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.9781627081764
EISBN: 978-1-62708-176-4
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006767
EISBN: 978-1-62708-295-2
... acting as mechanical fuses. Stress directors in helicopter gearing are also designed so that if gear tooth fracture occurs, only half the tooth breaks off. This leaves the other half of the gear tooth to carry the load, simultaneously creating sufficient vibration to warn the pilot of imminent failure...
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
... P · Δ K n P The fatigue crack-growth threshold value, Δ K th , is an important design parameter for low-stress, high-frequency fatigue-loading applications where small cracks exist and no crack extension during service can be permitted. No cyclic crack propagation of an existing...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006462
EISBN: 978-1-62708-190-0
... expected for fatigue damage under cyclic loading up to the realm of failure ( D F ). Periodic in-service inspection times ( T I ) are numbered. The damage progression lines change from a solid line to a dashed line when their individual damage exceeds the detectable threshold and the component would...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005411
EISBN: 978-1-62708-196-2
... NUMEROUS APPLICATIONS in the modern engineering world that involve the use of metals under conditions of cyclic loading in operating conditions that can cause creep and/or environmental interactions with time-independent, mechanical fatigue processes. The interrelationships between the various damage...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006791
EISBN: 978-1-62708-295-2
... modes of adhesive wear including scoring, scuffing, seizure, and galling, and describes the processes involved in classic laboratory-type and standardized tests for the evaluation of adhesive wear. It includes information on standardized galling tests, twist compression, slider-on-flat-surface, load...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006774
EISBN: 978-1-62708-295-2
... physical evidence. Magnitude and direction of loading, interaction with other components, damage sequencing in systems, and other valuable information may be reliant upon the investigation and reconstruction of fracture patterns. In this way, inspection and analysis of fracture surfaces may be critical in...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005654
EISBN: 978-1-62708-198-6
... biomaterials in surgical implant applications, such as orthopedic, cardiovascular surgery, and dentistry. It addresses the key issues related to simulation of the in vivo environment, service conditions, and data interpretation. Theses include frequency of dynamic loading, electrolyte chemistry, applicable...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006012
EISBN: 978-1-62708-172-6
... particles, the percolation threshold (the minimum concentration of a material needed to establish a continuous network within a matrix material) may be as high as 30 vol%, but with high-aspect-ratio nanotubes, such as carbon nanotubes, effective conductance can be observed at levels of 1 to 2 vol%. Due to...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003843
EISBN: 978-1-62708-183-2
... in the first few cycles. Concrete that is under design load while heated loses less strength than unloaded concrete loses. The reason: imposed compressive stresses inhibit development of cracks that would be free to develop in unrestrained concrete. Concrete that is allowed to cool before...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003822
EISBN: 978-1-62708-183-2
... 35 ). In α and, especially, α-β alloys, hydrogen contents above critical levels can result in sustained-load cracking, which dramatically reduces useful maximum service loads in notched or cracked components under slow strain rate or constant tensile load situations ( Ref 31 , Ref 32 , Ref 33...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006786
EISBN: 978-1-62708-295-2
... present. In SMIE, smooth or notched specimens or components, under static loads, exhibit increasing time to failure with decreasing stress and a minimum stress for failure (i.e., a threshold). It has been proposed that crack growth rate in SMIE is controlled by thermally activated surface self...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006780
EISBN: 978-1-62708-295-2
... components that are vulnerable to bulk creep damage typically are subjected to uniform loading and uniform temperature distribution during service. The life of such a component is related to the creep-rupture properties, and the type of failure is referred to as stress rupture or creep rupture. Stress or...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001831
EISBN: 978-1-62708-181-8
... fluting. (a) Flutes and cleavage resulting from a mechanical overload of a Ti-0.35O alloy. (b) Flutes and cleavage resulting from SCC at β-annealed Ti-8Al-1Mo-1V alloy in methanol. (c) Flutes cleavage Ti-8Al-1Mo-1V resulting from sustained-load cracking in vacuum. (d) Flutes occurring near the notch on...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003063
EISBN: 978-1-62708-200-6
... influence the reinforcement-matrix interface in a ceramic-matrix composite Factor Example Intrinsic property interaction Load transfer Magnitude of bonding Strong, none, or mixed Type of bonding Chemical, physical, mixed Type of coating Fugitive or “permanent” Reaction products...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001835
EISBN: 978-1-62708-181-8
... Ref 4 , 43 , 44 , and 45 . Examination of ductile fracture surfaces by SEM reveals information about the type of loading experienced during fracture, the direction of crack propagation, and the relative ductility of the material ( Ref 56 , 57 , 58 ). The shape of the dimples produced is...