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photoelastic measurements

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003027
EISBN: 978-1-62708-200-6
... birefringence haze optical testing optical transmission photoelastic measurements physical properties plastics refractive index surface characteristics yellowness OPTICAL TESTING of plastics includes characterization of materials and analysis of optical components. If a material is tested...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003391
EISBN: 978-1-62708-195-5
..., postbuckling behavior, damage growth, and so forth. Model predictions are compared to data obtained from instrumentation (strain gages, photoelastic and shadow-moiré, etc.), nondestructive evaluation (ultrasonic, radiography), and destructive evaluation. As demonstrated in this article, recent finite element...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001815
EISBN: 978-1-62708-180-1
..., temperature, contaminants, and mechanical stability. Gear Stresses Figure 10 , a photoelastic study of a loaded gear in action, emphasizes the importance of root fillets in gear loading. The areas where the stress patterns are close together and concentric indicate very high stress gradients. High...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003228
EISBN: 978-1-62708-199-3
... technique has a specific range of applications, and a particular leak detection technique should be selected only after careful consideration. The measurement of dimensions, referred to as “metrology,” is one of the most widely used NDT activities, although it is not considered with other...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003228
EISBN: 978-1-62708-199-3
... such as photoelastic coatings, brittle coatings, or strain gages ( Ref 8 ). If the stress-strain behavior of the material is known, these strain values can be converted into stress values. Residual stresses in materials can be nondestructively measured by a variety of methods, including x-ray diffraction ( Ref 9...
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
... image generated by subtracting uncracked image from all subsequent images. Source: Ref 40 Abstract 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...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0005693
EISBN: 978-1-62708-178-8
... dropping mercury electrode DNC delayed neutron counting DSID direct sample insertion device e electron; natural log base, 2.71828 E energy; modulus of elasticity E cell measured cell potential E const constant cell potential E p proton...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003329
EISBN: 978-1-62708-176-4
... to sectioning or material removal in destructive residual stress measurement. These include mechanical gages, often dial gages, employed with specially made jigs and fixtures, reflected light schemes, photoelastic coatings, and electrical resistance strain gages. However, over the last few decades, the use...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001475
EISBN: 978-1-62708-173-3
...Abstract Abstract This article describes the formation of residual stresses and distortion, providing information on the techniques for measuring residual stresses. It presents a detailed discussion on the magnitude and distribution analysis of the residual stresses and distortion in weldments...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005617
EISBN: 978-1-62708-174-0
...Classification of techniques for measuring residual stress Table 1 Classification of techniques for measuring residual stress A-1 Stress-relaxation techniques using electric and mechanical strain gages Plate  Sectioning technique using electric resistance strain gages  Gunnert...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002118
EISBN: 978-1-62708-188-7
...) . Because these force components cannot be directly measured (except for the forces on the rake face of the tool when α = 0°), a dynamometer must be used to measure the primary (horizontal) cutting force, F c , and the tangential (vertical) force, F t . Thus, the measured forces can be resolved onto...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001735
EISBN: 978-1-62708-178-8
... subtraction, derivative methods, and Fourier self-deconvolution, quantitative infrared analysis should not be attempted unless the spectra are plotted in absorbance units. Infrared intensity can be determined with favorable results by measuring peak height or the area under the absorption band. In either case...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003326
EISBN: 978-1-62708-176-4
... 1968 , p 53 – 55 32. Preater R.W.T. , Photoelastic Analysis of Journal Bearings: Preliminary Investigations , Experimental Methods in Tribology Proc. , 1967–1968 , Vol 182 (Pt 3G), March 1968 , p 90 – 94 33. Earles S.W.E. and Powell D.G. , Considerations...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002385
EISBN: 978-1-62708-193-1
... values of K Ic of these materials is on the order of 10 to 20%, depending on how well characterized the materials are. Evaluation of stress intensity can be done either experimentally ( Ref 3 , 4 ), such as by use of photoelasticity, or analytically using finite element methods ( Ref 5...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002468
EISBN: 978-1-62708-194-8
... for a certain geometry include photoelasticity, brittle coatings, and finite element techniques. Table 1 gives some typical values of K t . Values of the stress concentration factor <italic>K</italic><sub>t</sub> Table 1 Values of the stress concentration factor K t Component shape Value...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003321
EISBN: 978-1-62708-176-4
.... and Hoeppner D. , Fatigue Properties in Engineering , Fatigue and Fracture , Vol 19 , ASM Handbook , ASM International , 1996 , p 19 7. Pih H. and Liu K.C. , “Laser Diffraction Methods for High Temperature Strain Measurements,” Exp. Mech. , March 1991 , p 60 – 64 10.1007...
Book Chapter

Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003280
EISBN: 978-1-62708-176-4
...Abstract Abstract This article describes measurement techniques for the three basic types of adhesion: fundamental adhesion, thermodynamic adhesion, and practical adhesion. It discusses common measurement methods for each type of adhesion with the main focus on practical adhesion testing...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003443
EISBN: 978-1-62708-195-5
... Using a Sandwich Beam D 5528 Standard Test Methods for Mode I Interlaminar Fracture Toughness of Unidirectional Fiber-Reinforced Polymer-Matrix Composites D 6415 Standard Test Method for Measuring the Curved Beam Strength of a Fiber-Reinforced Polymer-Matrix Composite ISO standard (b...
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
... Tests; Metallography , Vol 03.01 , 2002 Annual Book of ASTM Standards , American Society for Testing and Materials , 2002 25. “Standard Test Method for Measurement of Fatigue Crack Growth Rates,” ASTM E 647, Metals—Mechanical Testing; Elevated and Low-Temperature Tests; Metallography , Vol...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002401
EISBN: 978-1-62708-193-1
... Asperities in Hertzian Contact as Measured by Photoelasticity , J. Lubr. Technol. (Trans. ASME) , July 1973 , p 277 – 286 28. Tokuda M. , Nagafuchi M. , Tsushima N. , and Muro H. , Observations of the Peeling Mode of Failure and Surface Originated Flaking from a Ring to Ring...