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stress intensity

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Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003815
EISBN: 978-1-62708-183-2
...-corrosion, atmospheric corrosion, filiform corrosion, and corrosion in water and soils. It discusses the effects of composition, microstructure, stress-intensity factor, and nonmetallic building materials on the corrosion behavior of aluminum and its alloys. The article also describes the corrosion...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006476
EISBN: 978-1-62708-190-0
...-like power spectra up to approximately 2 MHz. The stochastic nature, together with the static sound heard when the pickup is connected to a speaker, is the source of the term Barkhausen noise . The quantity and intensity of Barkhausen jumps are affected by mechanical stresses, both residual and...
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
... the stress-intensity factor, K , to describe the magnitude of a field with a unique stress distribution and to relate the boundary loading to the crack tip stresses. Irwin showed that as long as the region defined by the K field was small relative to the dimensions of a component, the stress field...
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
... can also have an effect on crack propagation when a fracture mechanics approach is used. For example, fatigue crack growth rates in austenitic stainless steels increase as R increases ( Ref 31 ). To account for this effect, an effective stress-intensity factor K eff is used in the Paris equation...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006785
EISBN: 978-1-62708-295-2
... requires the presence of a tensile stress. Furthermore, the magnitude of the tensile stress must be above a certain minimum value. The minimum stress required for SCC has been studied both in terms of a threshold stress and, using a linear elastic fracture mechanics approach, a threshold stress intensity...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006451
EISBN: 978-1-62708-190-0
... additional setup steps usually are involved to enable image capture during cyclical loading. With respect to fracture mechanics research, one area in which thermoelasticity has been applied with great success is in determining stress intensity factors. For fracture mechanics type research, high stress...
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
... of subcritical creep crack growth would not be characterized by the fracture-mechanics stress-intensity ( K ) parameter. Other methods are used to characterize creep crack growth in ductile metal materials used at high temperature, as described in more detail in the article “Elevated-Temperature Life...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006632
EISBN: 978-1-62708-213-6
... intensity and free of interference from neighboring peaks can be produced in the high-back-reflection region with the radiations available. X-ray diffraction residual-stress measurement is unique in that macroscopic and microscopic residual stresses can be determined nondestructively, but only in a very...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006768
EISBN: 978-1-62708-295-2
...-stress contributions to the stress-intensity factor can be calculated and used to predict whether crack growth and/or arrest will occur. It should be noted that the effect of residual stresses on crack-growth rates tends to diminish with increasing fracture toughness. Residual stresses can also be taken...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001298
EISBN: 978-1-62708-170-2
... Table 1 Comparison of average residual stress calculated using Eq 3 and 4 d s / d c Calculated stress Eq 3 Eq 4 MPa ksi MPa ksi 200 −1143 −165.7 −1137 −164.9 100 −571 −82.8 −565 −81.9 50 −286 −41.5 −280 −40.6 20 −114 −16.5 −109 −15.8...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005947
EISBN: 978-1-62708-166-5
... Abstract Dimensional and shape changes caused by heat treatment have been the subject of scientific and industrial research for a very long time. This article provides an overview of the complexity of distortion and stress generation during heat treatment of steels. It discusses the measurement...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006252
EISBN: 978-1-62708-169-6
... Abstract The presence of macroscopic residual stresses in heat treatable aluminum alloys can give rise to machining distortion, dimensional instability, and increased susceptibility to in-service fatigue and stress-corrosion cracking. This article details the residual-stress magnitudes and...
Book Chapter

By Ted Kostilnik
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001235
EISBN: 978-1-62708-170-2
... shot peening of production parts. It concludes with information on the SAE standard J442 that describes the test strips, strip holder, and gage used in measuring shot peening intensity. cold working compressive stress gage peening intensity shot peening shot propelling equipment shot...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006662
EISBN: 978-1-62708-213-6
...). Polarization modulation can be used to measure infrared reflection-absorption spectra of adsorbed monolayers in a single-beam experiment ( Ref 29 , 30 ). A linear polarizer is oriented to pass p-polarized light and is followed by a photo-elastic modulator (PEM) oriented with the stress axis at 45° to the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003046
EISBN: 978-1-62708-200-6
.... Alternate layers of titanium foil and film adhesive have been used to make a concentric, stepped patch ( Ref 17 ). Such a repair may be adequate in particular cases, but it suffers from the high shear and peel stresses at the edge of the hole. The external protrusion increases, and the joint efficiency...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005426
EISBN: 978-1-62708-196-2
... intermolecular forces. Kinetic theory derivations are valid only for dilute gases but give detailed information about how such transport phenomena as stresses and heat fluxes arise from molecular fluctuations, which in turn are related to the average molecular properties for which the fluid equations solve...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006470
EISBN: 978-1-62708-190-0
... using frequencies between 1.0 and 25 MHz, which are well above the range of human hearing, which is approximately 20 Hz to 20 kHz. Ultrasonic waves are mechanical vibrations, where the amplitudes of vibrations in metal parts being ultrasonically inspected impose stresses that are well below the elastic...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009003
EISBN: 978-1-62708-185-6
... Abstract This article provides the definitions of stress and strain, and describes the relationship between stress and strain by stress-strain curves and true-stress/true-strain curves. The emphasis is on understanding the factors that determine the extent of deformation a metal can withstand...
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
... conditions of reasonably constant cyclic loading frequency and advancing within the nominal range of 10 −5 to 10 −3 mm/cycle, [1] the crack growth rate, da/dN , can be expressed as a function of the stress intensity factor K ( Ref 15 , 31 , 32 ): (Eq 1) d a d N = C ( Δ K ) m...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003241
EISBN: 978-1-62708-199-3
... Abstract This article reviews the various types of mechanical testing methods, including hardness testing; tension testing; compression testing; dynamic fracture testing; fracture toughness testing; fatigue life testing; fatigue crack growth testing; and creep, stress-rupture, and stress...