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constant-strain testing

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780305
EISBN: 978-1-62708-281-5
... to ESC, namely constant tensile load testing and constant-strain testing. environmental stress crazing glassy thermoplastics polyethylenes nylons constant tensile load testing constant-strain testing CRAZING can be described as the formation of regions of plastic deformation normal to...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780216
EISBN: 978-1-62708-281-5
... studies showing the effects of ε d and E 3 on the predicted load-displacement behavior during a puncture test can be carried out. In Fig. 16 , the draw strain, ε d is held constant at 0.4, and the hardening modulus, E 3 , is varied from 0 to 414 MPa (60 ksi). Young’s modulus is 2.1 GPa (0.310 × 10...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780185
EISBN: 978-1-62708-281-5
... polycarbonate at room temperature as a function of strain rate Short-term tensile properties are usually measured at a constant rate of 0.5 cm/min (0.2 in./min). It is recommended by the American Society for Testing and Materials (ASTM) that the speed of testing be such that rupture occurs in 0.5 to 5...
Series: ASM Technical Books
Publisher: ASM International
Published: 15 June 2021
DOI: 10.31399/asm.tb.mpktmse.t56010001
EISBN: 978-1-62708-384-3
... shrinks ( Fig. 16 ). Fig. 16 Direction of elastic deformation For a given material that is elastically deforming, the ratio of the longitudinal and transverse strain remains constant. Poisson was the first to document this phenomenon, and the ratio is called Poisson’s ratio (υ). Equation 10...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720117
EISBN: 978-1-62708-305-8
... Abstract This chapter is a detailed account of the tensile testing procedure used for evaluating metals and alloys. The discussion covers the stress-strain behavior of metals determined by tensile testing, properties determined from testing, test machines for measuring mechanical properties...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780238
EISBN: 978-1-62708-281-5
... ′ is the strength coefficient, 2 N f is the number of load reversals to failure, ε f ′ is the ductility coefficient, and b and c are material constants. The first term on the right side of Eq 2 is the elastic component of the strain amplitude, and the second term is the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780211
EISBN: 978-1-62708-281-5
.... , J. Polym. Sci. B. Polym. Phys. , Vol 29 , 1991 , p 785 10.1002/polb.1991.090290702 23. Ouederni M. and Phillips P.J. , J. Polym. Sci. B., Polym. Phys. , Vol 33 , 1995 , p 1313 10.1002/polb.1995.090330901 24. “ Standard Test Methods for Plane Strain Fracture...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870219
EISBN: 978-1-62708-299-0
... categories, namely smooth, and precracked or notched specimens. Further distinction can be made in the loading mode, such as constant strain (smooth specimens), constant load (smooth or precracked specimens), and dynamic load (slow strain rate specimens). More detailed information on these loading modes can...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780177
EISBN: 978-1-62708-281-5
... polarized waves, each polarized in the direction of the principal strains, e i . The difference in the refractive index, n , for the two polarized waves is: n 1 − n 2 = k ( e 1 − e 2 ) where k is a material property called the strain-optical constant...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060149
EISBN: 978-1-62708-261-7
... each of these two competing terms: the amount of elastic strain energy that is released as a result of the crack extension versus the amount of work that must be done in order to form new fracture surfaces. Under a constant applied stress, the point at which the crack will begin to propagate is reached...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780259
EISBN: 978-1-62708-281-5
...; D, gage; E, spring gage; F, constant-speed chain drive; G, constant-speed tensile tester crosshead; H, constant-speed drive rolls; I, nylon monofilament; J, low-friction pulley; K, worm screw; L, half nut; M, hysteresis, synchronous motor. Source: Ref 19 ASTM D 3028-90, “Standard Test...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480113
EISBN: 978-1-62708-318-8
... specimens are made, the most important factors during such testing are: Strain rate Testing temperature Section size To obtain accurate, reproducible results with titanium specimens, the strain rate must be closely controlled during testing. Strain rate is the rate at which the gage length...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290085
EISBN: 978-1-62708-319-5
... strain is measured during heating. Typical samples are right circular cylinders of 5 mm (0.2 in.) in length. Capillary rheometry is a common means to monitor flow for powder-binder mixtures. The test was described in Chapter 3, “Binder Constituents,” in this book, and the typical layout is shown in...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.t52860115
EISBN: 978-1-62708-338-6
... regions for sophisticated analysis techniques Common two-dimensional, axisymmetric finite-element codes, including ABAQUS, NASTRAN, ANSYS, ARGUS, SAASMC, and TEXLSP, can perform accurate evaluations using orthotropic elastic/plastic material properties and large displacement/strain Lagrangian...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720085
EISBN: 978-1-62708-305-8
... of Standard Test Blocks • JIS B 7726, Rockwell Hardness Test—Verification of Testing Machines • JIS B 7730, Rockwell Hardness Test—Calibration of Reference Blocks The Brinell hardness test is simple and consists of applying a constant load, usually 500 to 3000 kg (1100 to 6600 lb), on...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090367
EISBN: 978-1-62708-266-2
.... , Pugh E.N. , and Ugiansky G.M. , Ed., ASTM , 1984 , p 202 – 241 10.1520/STP34434S 17.61 Kim C.D. and Wilde B.E. , A Review of Constant Strain-Rate Stress Corrosion Cracking Test , Stress Corrosion Cracking—The Slow Strain-Rate Technique , STP 665, Ugiansky G.M...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040025
EISBN: 978-1-62708-300-3
... strain rate was not constant). [ Douglas et al., 1975 ] Fig. 4.12 Flow stress versus strain and strain rate versus strain, for Waspaloy at 1950, 2050, and 2100 °F (1065, 1120, and 1150 °C) (tests were conducted in a mechanical press where strain rate was not constant). [ Douglas et al., 1975...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850334
EISBN: 978-1-62708-260-0
... the ratio of stress to strain is constant within the elastic limit of the material. This ratio, the modulus of elasticity, is constant for a given material and is a measure of the rigidity of a material. Dynamic, or rebound, hardness test methods measure hardness as related to the elastic behavior of...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870351
EISBN: 978-1-62708-314-0
... SACMA SRM-13. The most common geometry is a 9 in. (23 cm) long by 1.0 in. (2.5 cm) wide specimen. Different orientations can be tested, such as unidirectional, off-axis, cross-ply, and quasi-isotropic. Mechanical or hydraulic wedge-type grips are used. Either an extensometer or bonded strain gages are...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.t52860095
EISBN: 978-1-62708-338-6
... of Split-Disk Tests for Process Parameters of Filament Wound Epoxy Composite Tubes , Polym. Test. , Vol 24 , 2005 , p 648 – 655 10.1016/j.polymertesting.2005.03.012 8.45 Tse P.C. , Reid S.R. , and Ng S.P. , Spring Constants of Filament-Wound Composite Circular Rings...