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high strain rate shear test

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Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009009
EISBN: 978-1-62708-185-6
... carried out in a servohydraulic machine such as that shown schematically in Fig. 1 . Because strain-rate effects are large in high-temperature testing, it is important to use an apparatus with high machine stiffness. The furnace that surrounds the specimen is usually of resistance, radiant-heating, or...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004017
EISBN: 978-1-62708-185-6
... of the workpiece material (sticking friction). Control of friction through lubrication is an important aspect of metalworking. High friction leads to various defects that limit workability. However, for most workability tests, conditions are selected under which friction is either absent or easily...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005413
EISBN: 978-1-62708-196-2
..., triggers slip on secondary systems. The contribution to the strain by secondary dislocations is negligibly small; however, since they will entangle with primary dislocations, they have a strong catalytic effect on the storage rate of dislocations and cause the high hardening coefficient in stage II. As...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003241
EISBN: 978-1-62708-199-3
... the need for extrapolation, but they are not as durable as analog testers. In statistical process control of Brinell testing, there is no adequate way to achieve high process capability indices (C p and C pk values) without making the investment in state of the art optics that utilize frame...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009004
EISBN: 978-1-62708-185-6
... compression. It should be possible, then, to predict fracture in bar rolling from compression tests on the alloy of interest. This is pertinent in current attempts to roll ingots of high alloy content into bar form. The complete workability study of bar rolling includes physical modeling of bar rolling to...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004020
EISBN: 978-1-62708-185-6
... wire drawing or sheet rolling (where the strain rates may be as high as 10 4 /s) from data obtained in a laboratory tension test, in which the strain rates may be as low as 10 −4 /s, the flow stress should be corrected unless m is very small. At hot-working temperatures, m typically rises to 0.10...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009007
EISBN: 978-1-62708-185-6
...-Tension Testing.” In the torsion test, deformation is caused by pure shear, and large strains can be achieved without the limitations imposed by necking ( Ref 2 , 3 ). Because the strain rate is proportional to rotational speed, high strain rates are readily obtained ( Table 1 ). Moreover, friction has...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009003
EISBN: 978-1-62708-185-6
... Testing,” in this Handbook. Also discussed there are tests expressly designed to evaluate fracture. Most commercial metals are complex alloys that undergo a wide range of structural behavior over the range of strain, strain rate, and temperature common to deformation processing. These mechanisms of...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003025
EISBN: 978-1-62708-200-6
... within 0.5 to 5 min. Most testing machines are capable of measuring from 0.05 cm/min (0.02 in./min) to 50 cm/min (20 in./min). When measurement is taken at a high strain rate, the elongation at break tends to be shorter and the yield stress tends to increase ( Ref 21 ). The ultimate strength for most...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001831
EISBN: 978-1-62708-181-8
.... Transgranular creep ruptures, which generally result from high applied stresses (high strain rates), fail by a void-forming process similar to that of microvoid coalescence in dimple rupture ( Ref 45 , 46 , 47 ). Because transgranular creep ruptures show no decohesive character, they will not be considered...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006781
EISBN: 978-1-62708-295-2
... signal conditioning. Life calculation for high-temperature fatigue is challenging in itself. When the complication of simultaneously varying temperature and strain is imposed, the difficulties are increased significantly. For that reason, component simulation testing is often carried out. In this...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006778
EISBN: 978-1-62708-295-2
...) . The chemical composition of the fasteners was not verified, but proof load and tension testing of exemplar screws from the same lot revealed satisfactory results. The level of necking on the tension-tested screws was analogous to those that failed during installation. Fig. 2 Fracturing of high...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006753
EISBN: 978-1-62708-295-2
... economy are well documented. For example, the importance of investigating failures was vividly illustrated in the pioneering efforts of the Wright Brothers in developing self-propelled flight. In fact, while Wilbur was traveling in France in 1908, Orville was conducting flight tests for the U.S. Army...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006282
EISBN: 978-1-62708-169-6
... properties. Figure 8 shows the influence of texture on the high-cycle fatigue properties of fine-grained Ti-6Al-4V tested in a vacuum. Again, the pronounced influence of texture is apparent. Fig. 8 Influence of texture and test direction on high-cycle fatigue strength. B, basal; T, transverse; TD...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006285
EISBN: 978-1-62708-169-6
...) after working or between successive stages of working or customer forming processes. In principle, all deformed aluminum alloys lose some of their (strain-hardening) strength when heated or tested at higher temperatures (>200 °C, or 390 °F). However, there are specific differences for heat treatable...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005403
EISBN: 978-1-62708-196-2
...), produced by equal channel angular extrusion (ECAE) ( Ref 3 ), high pressure torsion (HPT) ( Ref 4 ), or merely large strain torsion testing ( Ref 5 ). Ultrafine grain strucutres can be obtained in this way. When dynamic recovery is weak, local concentrations of dislocations lead to various types of...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004016
EISBN: 978-1-62708-185-6
... passes of ECAE show the increase to a stable and sufficiently high level. For area reduction (AR), this level is close to that of annealed material. For total elongation (EL), the stable level is rather moderate because the localization at the sample neck starts at an early testing stage. Uniform...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003044
EISBN: 978-1-62708-200-6
.... Selection of test methods used to determine the mechanical properties of composite materials must take environmental factors into account, since exposure to any environment affects these properties. Early in the development of high-performance carbon fiber composites, it was discovered that merely leaving...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003060
EISBN: 978-1-62708-200-6
... distribution. Another reason why one might want to proof test the component is to raise the allowable design stress. For very high desired reliabilities, the allowable design stress can become a small percentage of the test bar strength. By proof testing, the allowable design strength can be increased. In...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003816
EISBN: 978-1-62708-183-2
.... Silicon bronzes are susceptible to embrittlement by high-pressure steam and should be tested for suitability in the service environment before being specified for components to be used at elevated temperature. These alloys, containing 5 to 12% Al, have excellent resistance to impingement corrosion...