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thermoelastic stress analysis

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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...
Image
Published: 01 August 2018
Fig. 3 Thermoelastic stress analysis (TSA) results from fatigue cycling of open hole aluminum specimen. Data is subdivided into (a) X -data, (b) Y -data, (c) magnitude, and (d) phase as described in the section “ Thermoelastic Data ” in this article. More
Image
Published: 01 August 2018
Fig. 6 (a) Raw TSA images during test. (b) Thermoelastic stress analysis image generated by subtracting uncracked image from all subsequent images. Source: Ref 40 More
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006453
EISBN: 978-1-62708-190-0
... and selective excitation configuration of the signal-generation mechanisms in thermal nondestructive evaluation methods. The three widely used approaches to TNDE are surface-excited thermography, vibrothermography, and thermoelastic stress analysis. The article provides information on the common features...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005435
EISBN: 978-1-62708-196-2
... to experimental displacement fields based on detailed analysis of surface-relief effects from isolated martensite plates in ferrous alloys. Modification of the invariant plane-strain elastic strain energy (and the associated particle internal stress parameter, τ i ) is taken into account by a radial...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005619
EISBN: 978-1-62708-174-0
... ( Ref 44 ). Gao and Doumanidis ( Ref 17 , 18 ) analyzed the mechanics of metal UW. They developed a 2-D, quasi-static/dynamic, elasto-plastic numerical model of the stress/strain field through FE analysis. In the study by de Vries ( Ref 2 ), mechanics-based models were developed, along with a model...
Book Chapter

Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003736
EISBN: 978-1-62708-177-1
..., the transformation from austenite to martensite can be accomplished solely by deformation, without a quenching process. Two different types of this deformation-induced martensite have been observed: stress assisted and strain induced ( Ref 15 ). Stress-assisted martensite is produced when an applied stress provides...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006460
EISBN: 978-1-62708-190-0
... Thermoelastic Generation The principle of thermoelastic generation is this: Laser light is absorbed to some depth inside the material, releasing heat locally; the heated region then expands, producing a strain and a corresponding stress that is the source of waves propagating in the material or at its...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003378
EISBN: 978-1-62708-195-5
... Abstract The properties of unidirectional composite (UDC) materials are quite different from those of conventional, metallic materials. This article provides information on the treatment of UDC stress-strain relations in the forms appropriate for analysis of thin plies of material. It explains...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003780
EISBN: 978-1-62708-177-1
... be heat treated to hardnesses ranging from approximately 92 HRB to 55 HRC. Metallography is a useful tool for quality assurance, failure analysis, and understanding the effects of processing on the properties of uranium and its alloys. Natural uranium consists of two primary isotopes: U 235 (0.7...
Book Chapter

Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005726
EISBN: 978-1-62708-171-9
... Spraying by Explicit Finite Element Analysis , J. Therm. Spray Technol. , Vol 18 ( No. 5–6 ), mid-Dec 2009 , p 921 – 933 16. Samareh B. , Stier O. , Luthen V. , and Dolatabadi A. , Assessment of CFD Modeling via Flow Visualization in Cold Spray Process , J. Therm. Spray...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006409
EISBN: 978-1-62708-192-4
... in full-film lubrication. The article also discusses the viscous heating temperature measurements and numerical analysis of viscous heating. frictional heating full-film lubrication lubricated contacts viscous heating MECHANICAL COMPONENTS such as bearings, cams and followers, gears, and so...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003379
EISBN: 978-1-62708-195-5
... that exist within isolated unidirectional laminae as well as those that are caused by laminating together plies of different fiber orientations. The former set are customarily referred to as intralaminar thermal stresses and the latter as interlaminar thermal stresses. The basic analysis is performed...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006446
EISBN: 978-1-62708-190-0
... for the deformation-induced change of the propagation distance ( Ref 5 ). Further technical details can be found in Ref 2 , 10 , 17 , and 26 . In addition, it may be necessary to correct for temperature changes caused by the thermoelastic effect. Under adiabatic conditions, a harmonic uniaxial stress...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006331
EISBN: 978-1-62708-179-5
... and Microindentation Tests , Mech. Mater. , Vol 83 , April 2015 , p 110 – 121 10.1016/j.mechmat.2015.01.002 30. Andriollo T. , Thorborg J. , Tiedje N. , and Hattel J. , A Micro-Mechanical Analysis of Thermoelastic Properties and Local Residual Stresses in Ductile Iron Based...
Book Chapter

Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003377
EISBN: 978-1-62708-195-5
... approach. For purposes of laminate analysis, it is important to consider the plane-stress version of the effective stress-strain relations. Let x 3 be the normal to the plane of a thin, unidirectionally reinforced lamina. The plane-stress condition is defined by: (Eq 9) σ ¯ 33 = σ...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002476
EISBN: 978-1-62708-194-8
... for a given component analysis. Here p i is the probability of failure of the i th discrete element. In the next section an expression is specified for the probability of failure (or alternatively, the reliability) of the i th discrete element for a simplified state of stress, that is, a uniaxial...
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
... of Fig. 15 remain in the material as residual stresses. This residual-stress distribution, with tensile stresses in the core and compressive stresses near the surface, is typical for quenched materials without phase transformation. Size and Shape Changes This analysis indicates that dimensional...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005950
EISBN: 978-1-62708-166-5
... phenomena involved. Simulation results were commonly confirmed by microstructural analysis, hardness tests, and dimensional and x-ray diffraction (XRD) residual stress measurements. Although some results (such as prediction of temperature history, hardness distributions, and volume changes) were promising...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005168
EISBN: 978-1-62708-186-3
... sheets. It explains testing procedures and analysis methods that are used to measure the relevant data needed to identify the material coefficients. The article describes the various formulations of finite element methods used in sheet metal forming process simulations. Stress-integration procedures...