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hysteresis loops

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060083
EISBN: 978-1-62708-343-0
... Abstract This chapter compares and contrasts empirical approaches for partitioning hysteresis loops and predicting creep-fatigue life. The first part of the chapter presents experimental partitioning methods, explaining how they can be used to partition any loading cycle into its basic strain...
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Published: 01 December 2003
Fig. 4 Hysteresis loops for several loading-unloading cycles for a polycarbonate/polybutylene terephthalate blend. D , specimen displacement; HR, ratio of hysteresis energy to total strain energy. Source: Ref 41 More
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Published: 01 December 2003
Fig. 5 Hysteresis loops after various numbers of fatigue cycles in both high-impact polystyrene (HIPS) (bottom) and acrylonitrile-butadiene-styrene (ABS) (top). Note the lack of symmetry in the HIPS due to crazing mechanisms. See text for discussion More
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Published: 01 December 2003
Fig. 4 Hysteresis loops after various cycles in acrylonitrile-butadiene-styrene tested at stress amplitude (σ α ) = 25.4 MPa (3.68 ksi) and in high-impact polystyrene tested at σ α = 11.6 MPa (1.68 ksi) More
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Published: 01 August 2005
Fig. 3.42 Schematic hysteresis loops encountered in isothermal creep-fatigue testing. (a) Pure fatigue, no creep. (b) Tensile stress hold, strain limited. (c) Tensile strain hold, stress relaxation. (d) Slow tensile straining rate. (e) Compressive stress hold, strain limited. (f) Compressive More
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Published: 01 March 2006
Fig. 4.4 Development of hysteresis loops for man-ten steel under complex load history. Smooth specimen simulation of notch root stress-strain response of a notched specimen used in the SAE cumulative fatigue damage program. Source: Ref 4.1 More
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Published: 01 March 2006
Fig. 4.16 Hysteresis loops implied by moving only the elastic line due to mean stress. (a) Zero mean stress ( V σ = 0). (b) Tensile mean ( V σ = +1). (c) Compressive mean ( V σ = –1) More
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Published: 01 March 2006
Fig. 4.18 Hysteresis loops with positive, negative, and zero mean stress, showing that measured cyclic stress-strain response is independent of mean stress. Material, 316 stainless steel at room temperature. Dr, 43.2 ksi. Source: Ref 4.16 More
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Published: 01 March 2006
Fig. 12.7 Hysteresis loops generated in step tests of Fig. 12.6(a) for polycarbonate at room temperature. Source: Ref 12.3 More
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Published: 01 March 2006
Fig. 12.12 Hysteresis loops for three polymers cycled at various strain ranges. (a) Polypropylene at 298 K, Δε t = 8% ( Ref 12.4 ). (b) Nylon 6/6 at 298 K, Δε t = 12% ( Ref 12.3 ). (c) Polycarbonate at 298 K, Δε t = 10% ( Ref 12.3 ) More
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Published: 01 March 2006
Fig. 12.26 Stress-strain hysteresis loops for tensile fatigue specimen TH. Source: Ref 12.9 More
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Published: 01 March 2006
Fig. 12.32 Stress-strain hysteresis loops for zero-to-compression fatigue loading. Source: Ref 12.9 More
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Published: 01 March 2006
Fig. 12.39 Stress-strain hysteresis loops for fully reversed fatigue specimen TCH. Source: Ref 12.9 More
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Published: 01 June 2007
Fig. 8.4 Hysteresis loops of typical soft (left) and hard (right) magnetic materials. Source: Ref 4 . Reprinted with permission from MPIF, Metal Powder Industries Federation, Princeton, NJ More
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Published: 01 July 2009
Fig. 4.2 Nine different hysteresis loops with the same PP, CC, and CP components of strain. Source: Ref 4.1 More
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Published: 01 July 2009
Fig. 4.7 Hysteresis loops and strain history in strain-range conversion experiments involving unequal strain ranges of one cycle of CP (Δε IN = 0.0170, f CP = 0.671, f PP = 0.329), followed by either one or two cycles of PC (Δε IN = 0.0112, f Pc = 0.509, f PP = 0.491 More
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Published: 01 July 2009
Fig. 5.22 Hysteresis loops used in developing the generalized strain-range partitioning life relationships. Source: Ref 5.26 More
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Published: 01 July 2009
Fig. 6.41 Schematic bithermal stress-strain hysteresis loops (mechanical + thermal strain). (a) In-phase PP, high-rate in-phase. (b) Out-of-phase PP, high-rate out-of-phase. (c) In-phase, CP + PP, tensile creep in-phase. (d) Out-of-phase, PC + PP, compressive creep out-of-phase. (e) In-phase More
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Published: 01 July 2009
Fig. 7.2 Three types of hysteresis loops for biaxial loading wherein the transverse stress is opposite in sign to that of the stress in the dominant direction. (a) Stress in 2-direction is σ 2 = 0. (b) Stress in 2-direction is |σ 2 |≪|σ 1 |. (c) Stress in 2-direction is |σ 2 | > (½)|σ 1 More
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Published: 01 July 2009
Fig. 8.20 Hysteresis loops for four bithermal loadings used to evaluate various predictive methods. (a) PP. (b) CC. (c) CP. (d) PC More