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stress-reversal technique

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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
... precipitation-hardened alloys. It examines the consequences of aging treatments on the residual stress, namely, annealing, precipitation heat treatment, and cryogenic treatment. The article provides information on uphill quenching, which attempts to reverse thermal gradients encountered during quenching. It...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006442
EISBN: 978-1-62708-190-0
... on detection, angular dependence, and advanced analysis methods of MBN emissions. micromagnetic technique magnetic Barkhausen noise magnetoacoustic emission uniaxial stress angular-dependent strain MICROMAGNETIC TECHNIQUES take advantage of the abrupt local changes in magnetization that...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006644
EISBN: 978-1-62708-213-6
... crystal growth, heat treatment, stress application, device operation, and so on allows for the study of the generation, interaction, and propagation of defects, making it a versatile technique to study many materials processes. The first topographic image of a single crystal was recorded as early as...
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
... the ability of the component to perform its design function. The most common application is detection of flaws caused either by manufacturing anomalies, service or environmental stresses, or natural material aging. More generally, applications may include estimation of mechanical and material...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006473
EISBN: 978-1-62708-190-0
... reviews the determination of area-amplitude and distance-amplitude curves of a straight-beam pulse-echo ultrasonic inspection system. The article discusses the three principal conventional manual ultrasonic sizing techniques: 6 dB drop technique, maximum-amplitude technique, and 20 dB drop technique. It...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006455
EISBN: 978-1-62708-190-0
... discusses the three major inspection techniques for tubular sections, namely, the double-wall, double-image technique; the double-wall, single-image technique; and the single-wall, single-image technique. It illustrates the arrangements of penetrameters and identification markers for the radiography of...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003057
EISBN: 978-1-62708-200-6
...: Identification of crystalline phases Quantitative analysis of mixtures of phases Precision measurement of lattice parameters Determination of the degree of preferred orientation in polycrystalline materials Estimation of mean size of very small crystalline particles, lattice strain, residual stresses...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006457
EISBN: 978-1-62708-190-0
... joints, a lack of fillet on both sides generally indicates a complete void. This defect is considered serious because the high stresses near the edges of a bond joint can cause a cracked adhesive layer due to shear or peel forces. A feeler gage can be used to determine the depth of the defect into the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003045
EISBN: 978-1-62708-200-6
... opening to prevent surface moisture condensation. Moisture condensed on the surface of prepregs and adhesives is an excellent source for void formation. Orientation of prepreg fiber or fabric patterns in the lay-up precedes the design stage of a composite part. Designers, stress analysts, materials...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003042
EISBN: 978-1-62708-200-6
... the life of fastened joints. Hole characteristics, such as waviness/roughness or lack of axial straightness and roundness, can cause stress concentration at the fastener assemblies, leading to premature failure. To avoid this problem, several research projects have established the optimal methods and...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006764
EISBN: 978-1-62708-295-2
... in crevices and attracts dyes that accentuate flaw visibility. Locating fabrication discontinuities, stress cracks Will not find subsurface discontinuities Ease of application. Improvement over simple visual inspection Most metals and composites with nonporous surfaces Magnetic particle...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003133
EISBN: 978-1-62708-199-3
... wire, and high-voltage cable. Cross-linked polyethylene (XLPE), which is made by adding organic peroxides to polyethylene and then vulcanizing the mixture, yields better heat resistance, better mechanical properties, better aging characteristics, and freedom from environmental stress cracking. Special...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006668
EISBN: 978-1-62708-213-6
... the SEM compared with other common microscopy and microanalysis techniques. The following sections cover the critical issues regarding sample preparation, the physical principles regarding electron beam-sample interaction, and the mechanisms for many types of image contrast. The article also presents...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003221
EISBN: 978-1-62708-199-3
... not recommended because such parts are readily warped by the compressive stresses that are set up in the surface by blasting. Blasting of thin sections with coarse abrasive is not recommended because the coarse abrasive can wear through the aluminum. Typical conditions for dry blasting with silica...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006469
EISBN: 978-1-62708-190-0
... solution led to stable numerical schemes for the evaluation of the displacement and stress fields within the laminate. This analysis of LLW behavior was applied to both multiorientation laminates and bonded structures with different interface conditions. Fig. 25 Schematic of leaky Lamb wave (LLW...
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
... Abstract X-ray diffraction (XRD) residual-stress analysis is an essential tool for failure analysis. This article focuses primarily on what the analyst should know about applying XRD residual-stress measurement techniques to failure analysis. Discussions are extended to the description of ways...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006792
EISBN: 978-1-62708-295-2
... contact, referred to as the maximum shear stress (τ max ). The depth at which this maximum shear stress occurs is referred to as the depth to maximum shear. The maximum shear stress and the depth to maximum shear are commonly used to calculate RCF life. In reality, the reversal of the orthogonal shear...
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
... Abstract Thermoelastic stress analysis (TSA) an increasingly popular infrared (IR)-based technique for measuring stress on the surface of a part subjected to time-varying loads. This article begins by providing a theoretical and historical background of thermoelastic stress analysis. It then...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004017
EISBN: 978-1-62708-185-6
... compressive stresses often predominate, it is common to reverse the convention and declare the compressive stresses are positive. Strain rate has three chief effects in metal deformation processes: (a) increases in strain rate raise the flow stress, especially in strain-rate sensitive materials...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006781
EISBN: 978-1-62708-295-2
... BiF waveform, made somewhat popular by researchers at the National Aeronautics and Space Administration (NASA) ( Ref 7 ), employs stress-free temperature changes coupled with isothermal load excursions. The intended purpose of the BiF waveform is to mimic a somewhat realistic, in-service waveform in a...