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threshold sensitivity

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003251
EISBN: 978-1-62708-199-3
... inorganic chemical compounds. This article describes the operating principles and types of XRD analyses, along with information about the threshold sensitivity and precision, limitations, sample requirements, and capabilities of related techniques. The necessary instrumentation for XRD analyses include...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003250
EISBN: 978-1-62708-199-3
... Determination of composition and thickness of thin film deposits Detection Threshold and Precision: Energy Dispersive Detectors Threshold sensitivity: ∼0.02% Precision of quantitative analyses: ∼1% relative or 0.02% absolute, depending on count time Detection Threshold and Precision...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003253
EISBN: 978-1-62708-199-3
... Threshold and Precision Threshold sensitivity: ∼0.5% Precision of quantitative analyses: ∼10% relative or 0.5% absolute, whichever is greater Limitations Cannot detect hydrogen or helium Quantitative analyses are typically lower in quality than those of EPMA Sample Requirements...
Image
Published: 12 September 2022
; (b) distal lung subunit composed of a concave and convex airway ensheathed in vasculature by 3D offset and anisotropic Voronoi tessellation; (c) threshold view of the area enclosed by the dashed box in (d) demonstrates bidirectional RBCs flow during ventilation; (e) distal lung subunit can stably More
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005405
EISBN: 978-1-62708-196-2
.... The article provides a description of the microstructure-sensitive modeling to model fatigue of several classes of advanced engineering alloys. It describes the various modeling and design processes designed against fatigue crack initiation. The article concludes with a discussion on the challenges...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006438
EISBN: 978-1-62708-190-0
.... NDE methods are designed to allow detection thresholds to be set to maximize the POD while minimizing the PFA. Factors affecting the POD include the signal sensitivity to degradations of interest, the size or severity of degradation that constitutes a critical flaw, instrument and material noise...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002357
EISBN: 978-1-62708-193-1
... Abstract This article describes the types of closure mechanisms, including plasticity-induced, roughness-induced, oxide-induced, and fretting-debris-induced. It discusses test techniques used to establish a valid threshold value for aluminum alloy crack growth thresholds, steel crack growth...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003633
EISBN: 978-1-62708-182-5
... of the measured time to failure, t f , is plotted against the applied stress, σ applied , and the time to failure can be seen to increase rapidly with decreasing stress; a threshold stress, σ th , is determined where the time to failure approaches infinity. The total time to failure at a given stress consists...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003292
EISBN: 978-1-62708-176-4
... behavior in superplastic materials was explained in terms of three possibilities: (a) the presence of threshold stress processes that are not sensitive to temperature, such as the interaction between boundary dislocations and ledges ( Ref 41 ), and fluctuations in the grain boundary area ( Ref 37 ); (b...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003252
EISBN: 978-1-62708-199-3
... Analysis Detection Threshold and Precision Threshold sensitivity for elemental analysis using EDS detector: ∼1% Precision of quantitative elemental analysis using EDS detector: ∼10% relative or 2% absolute, whichever is greater Limitations Energy dispersive detectors used for chemical...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003668
EISBN: 978-1-62708-182-5
... on the sensitivity of the material to the given environment and the occurrence of various static stress- fracture mechanisms. The environmental effects are quite strong above some threshold for SCC ( K ISCC ) and may be negligible below this level ( K ISCC is the stress-intensity threshold for plane- strain...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003757
EISBN: 978-1-62708-177-1
... issues in digital imaging is the comparison of resolution between film and electronic sensors. The following sections aim at clarifying some of the aspects of this discussion. Photographic Film Photographic film was the only practical image storage medium for nearly a century. Film sensitivity...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002396
EISBN: 978-1-62708-193-1
... strengthening Thermomechanical processing Selective service processing Fatigue resistance is evaluated in terms of: Cyclic stability Resistance to crack initiation and propagation Notch sensitivity General Trends in Cyclic Behavior In this section, the spectrum of properties...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003445
EISBN: 978-1-62708-195-5
... to be noncritical, due to the static load sensitivity of composite structures to stress concentration. In addition, the load level threshold at which composites become sensitive to cyclic loading is a very high percentage of their static failure load. Because this threshold is so high and most vehicles do...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002371
EISBN: 978-1-62708-193-1
... residual stresses in the same direction as applied external stress can significantly reduce the threshold of crack initiation in sensitive materials/environmental conditions. Complex surface conditions, such as those produced by carburizing and subsequent case hardening, exhibit the same trend, although...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002361
EISBN: 978-1-62708-193-1
... load. In many engineering alloy/environment systems, because the fatigue process can efficiently rupture the protective surface oxide films and facilitate access to corrosive environments and produce new metal surfaces, threshold stress intensities for cracking to occur are often lower under corrosion...
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
... the sensitivity level of the inspection method as well as the rejectable flaw size. An example of a specification requirement is given in Table 1 ; the specification is based on longitudinal wave inspection using flat-bottom holes (FBH). It defines the ultrasonic inspection requirements for product over 13...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003667
EISBN: 978-1-62708-182-5
... a multifaceted technical activity. Research investigations on the phenomenon range from studies of crack nucleation and growth, including such parameters as incubation time, crack growth rates, and threshold stress intensities, to studies on the relative susceptibility of materials to hydrogen embrittlement...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003666
EISBN: 978-1-62708-182-5
... aspects of the tests, such as method of loading and specimen size. These mechanical aspects can have variable effects on the initiation and propagation lifetimes and can influence estimates of a threshold stress. Therefore, an apparent threshold stress for SCC is not a material property, and threshold...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.9781627081931
EISBN: 978-1-62708-193-1