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constant tensile load 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...
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
... stress-strain behavior tensile test THE TENSILE TEST is one of the most commonly used tests for evaluating materials. In its simplest form, the tensile test is accomplished by gripping opposite ends of a test item within the load frame of a test machine. A tensile force is applied by the machine...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780216
EISBN: 978-1-62708-281-5
.... Although the initial appearance of the neck is physically similar to its metal counterpart, the cross-sectional area in many necked plastics stabilizes and then propagates along the length of a tensile specimen under a constant cross-head load. The engineering effect of this characteristic difference in...
Series: ASM Technical Books
Publisher: ASM International
Published: 15 June 2021
DOI: 10.31399/asm.tb.mpktmse.t56010001
EISBN: 978-1-62708-384-3
... types of test equipment used and how they compare in terms of loading force, displacement rate, accuracy, and allowable sample sizes. It then discusses the various ways tensile measurements are plotted and presents examples of each method. It examines a typical load-displacement curve as well as...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060149
EISBN: 978-1-62708-261-7
... continuum “no cracks” assumptions can be applied. The advantages of this method are simplicity and ease of application, and it can offer some initial perspective on a given situation. It is best applied in or near the elastic range, addressing constant-amplitude loading situations in what has been called...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480113
EISBN: 978-1-62708-318-8
.... Creep strength and stress-rupture ( Ref 6.7 ) properties determine the ability of material to carry loads at elevated temperatures for long periods of time. These properties are determined by the stress-rupture test. In the test, a specimen is held under constant load and temperature until failure...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780185
EISBN: 978-1-62708-281-5
.... Mechanical tests under tensile, compressive, flexural, and shear loading can be performed as either short-term tests or long-term tests of creep deformation. Data for the long-term tests are typically recorded as time-dependent displacement values at various levels of constant stress ( Fig. 15a ). This type...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780238
EISBN: 978-1-62708-281-5
... plots, also known as S - N curves. In these tests, uncracked specimens are subjected to a constant amplitude load cycle until failure occurs. Often, fatigue tests are performed on closed-loop servohydraulic universal test machines, which enable fatigue tests to be performed under a variety of...
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.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 September 2011
DOI: 10.31399/asm.tb.cfw.t52860115
EISBN: 978-1-62708-338-6
... become the industry standard for short-beam shear and tensile ring testing. Dick Young was one of the early leaders who filed key patents in this fledgling technology and then started his own company. His development work included filament-wound pipe nozzles and prototype RMCs. He licensed this...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780211
EISBN: 978-1-62708-281-5
... the uncracked ligament through which a constant direct current is passed. This method is also not generally applicable to polymers, because most are poor conductors. However, a method has been developed ( Ref 23 ) that involves measuring crack extension directly with a video camera. A thin copper grid...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820203
EISBN: 978-1-62708-339-3
..., the pit depth has been found to correlate to a fitted model element, the constant phase angle ( Ref 5 ). In this technique, fluctuations in potential and current between freely corroding electrodes are measured. Because of the small scale of these fluctuations of interest (in many cases <1 μV...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910427
EISBN: 978-1-62708-250-1
... Abstract Corrosion testing and monitoring are powerful tools in the fight to control corrosion. This chapter provides a general overview of three major categories of corrosion tests, namely laboratory tests, pilot-plant tests, and field tests. It begins with brief sections describing the...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240201
EISBN: 978-1-62708-251-8
... from the lower yield point, to the upper yield point, as shown in Fig. 12.8 . The load increases steadily with elastic strain, drops suddenly, fluctuates about some approximately constant value of load, and then rises with further strain. This type of stress-strain behavior was previously discussed in...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090367
EISBN: 978-1-62708-266-2
.... In some situations, it is advantageous to use an actual structural component for testing. However, this is usually not practical; more often it is necessary to select smaller specimens that afford the required predictive capability. Before about 1965, only constant-load or constant-strain tests...
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...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400033
EISBN: 978-1-62708-316-4
... results from two different tooling dimensions/laboratories cannot be compared directly ( Ref 4.11 ). In the tests used to estimate the FLCs, the sheet material is subjected to constant strain path/deformation history until it fractures ( Fig. 4.35 ). However, in practical stamping processes, the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540383
EISBN: 978-1-62708-309-6
... propagation test and life prediction should also be explored. Performing a fatigue life assessment—for example, making a damage calculation using Minor’s summation rule—requires reducing the complex variable loading spectrum into a number of events that can be compared to the available constant-amplitude...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610101
EISBN: 978-1-62708-303-4
... 2 where C is equal to Δ/ P , the elastic compliance. The loss of elastic potential energy with crack extension of unit area A is defined as the strain energy release rate ( G ). For a crack extending at constant deflection or at constant load: (Eq 10) G = d U d A...