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Torsion

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270122
EISBN: 978-1-62708-301-0
... electron microscopes, was flat and shiny with deformation marks and dimples, typical of torsional overload, and signs of severe rubbing on the periphery. Based on their observations, investigators concluded that the quill shaft failed by torsional overload, the source of which could not be determined...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040025
EISBN: 978-1-62708-300-3
...Abstract Abstract This chapter explains how to determine flow stress and forgeability using data from tensile tests, compression tests, ring tests, and torsion tests. It describes sample preparation, tooling and equipment, test procedures, error sources, and data plotting techniques. It also...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270074
EISBN: 978-1-62708-301-0
... pads, causing adhesive wear and the welding of slipper pad material onto the surface of a mating cam plate. Excessive friction between the slipper pads and cam plate, in turn, created a torsional overload that caused the camshaft to break. The chapter presents SEM images showing the wear pattern on one...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270124
EISBN: 978-1-62708-301-0
... that a considerable amount of rubbing occurred after the shaft broke. SEM fractography revealed deformation marks and elongated dimples, typical of shear overloads, along with other details. Based on their analysis, investigators concluded that the cardan shaft failed under torsional overload. They also cited a need...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610025
EISBN: 978-1-62708-303-4
... elongation along gage length. Source: Ref 5 Fig. 22 Schematic of torsion test. Reprinted with the permission of Cambridge University Press. Source: Ref 11 Abstract Abstract This chapter discusses the stress-strain response of materials, how it is measured, and how it used to set...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060155
EISBN: 978-1-62708-343-0
... Fig. 7.9 Applicability of strain-range partitioning multiaxiality rules to prediction of Zamrik’s ( Ref 7.9 ) torsional creep-fatigue lives for AISI type 304 stainless steel at 650 °C (1200 °F). (a) Life relationships based on axial creep-fatigue data for AISI type 316 stainless steel at 705 °C...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410315
EISBN: 978-1-62708-265-5
... in response. It then explains how wire drawing, patenting, and the Stelmor process affect microstructure, and describes various fracture mechanisms and how they appear on steel wire fracture surfaces. The chapter concludes by discussing the effects of torsional deformation, delamination, galvanizing...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630071
EISBN: 978-1-62708-270-9
... diagrams, which are simplified models of complex stress systems. Free-body diagrams of shafts in the pure types of loading (tension, torsion, and compression) are the simplest; they then can be related to more complex types of loading. This chapter discusses the principles of these simplest loading systems...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870105
EISBN: 978-1-62708-344-7
...., Mechanical Engineering Publications , London, UK , 1991 , p 81 – 101 5.21 Bonacuse P.J. and Kalluri S. , Elevated Temperature Axial and Torsional Fatigue Behavior of Haynes 188 , Journal of Engineering Materials and Technology , Vol. 117 , April 1995 , p 191 – 199 . ( Also see...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270130
EISBN: 978-1-62708-301-0
... valve had failed. During an inspection campaign, one bolt each on five shutters belonging to different aircraft were also found failed. Also, a new bolt had failed during fitment. Investigations revealed that the five bolts had failed by SCC and the new bolt by torsional overload due to excessive torque...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630023
EISBN: 978-1-62708-270-9
...: pure tension. T, tension. C, compression. (a) No stress concentration. (b) Surface stress concentrations. (c) Transverse hole stress concentration Torsion A cylindrical shaft under pure torsional loading (twisting) has stresses that are maximum at the surface and zero at the center or neutral...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130087
EISBN: 978-1-62708-284-6
... Fig. 5 Example of a macroscale ductile fracture in torsional loading Fig. 13 Cross section of worn gear teeth. Approximate width of steel segment shown is 23 mm (0.9 in.). Fig. 14 Scanning electron micrograph of a worn piece of hardened medium-carbon plate showing details...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630117
EISBN: 978-1-62708-270-9
... of the fatigue crack, as recorded by possible submicroscopic striations and macroscopic beach marks. The long horizontal dashed lines in reverse and unidirectional bending indicate the bending axes. Also note the radial ratchet marks between origins of the high nominal stress fractures. In the torsional fatigue...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250001
EISBN: 978-1-62708-345-4
... stresses applied to a gear tooth include the six types listed in Fig. 19 ; often, a combination of two or three types are applied at a time. Commonly they are tensile, compressive, shear (slide), rolling, rolling-slide, and torsion. Each type of gear tooth will have its own characteristic stress patterns...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540047
EISBN: 978-1-62708-309-6
... criterion (also known as the von Mises-Hencky criterion), the yield strength in shear as determined from a torsion test should be only 57.7% of the tensile yield strength. It is higher than 50% per the maximum shear stress theory and 47.1% per the octahedral stress theory. In the case of combined...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870375
EISBN: 978-1-62708-344-7
...-boundary strengthening Cold drawn tungsten wire 3720 540 Strain hardening; grain-boundary strengthening (a) At 650 °C (1200 °F) Comparison of stresses and strains in a tension test with those in a torsion test Table A.9 Comparison of stresses and strains in a tension test with those...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.tt2.t51060251
EISBN: 978-1-62708-355-3
... International , 2000 , p 429 – 446 10.31399/asm.hb.v08.a0003294 15. Gilat A. , Torsional Kolsky Bar Testing , Mechanical Testing and Evaluation , Vol 8 , ASM Handbook, ASM International , 2000 , p 505 – 515 10.31399/asm.hb.v08.a0003300 16. Lindholm U.S. and Yeakley L.M...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870179
EISBN: 978-1-62708-344-7
... by abrupt change in cross-sectional area Fig. 8.2 Shaft with fillet. (a) Bending. (b) Axial load. (c) Torsion. Source: Ref 8.6 The value of a stress concentration factor is dictated primarily by the geometric details of the notch. A notch with a small root radius will have a K t...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630063
EISBN: 978-1-62708-270-9
... or thinner Larger or thicker Type of loading Torsion Tension or compression Pressure (hydrostatic) Higher Lower Strength of metal Lower Higher Temperature With virtually all metals, ductile behavior is more likely at higher temperatures, unless there is some complicating...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050191
EISBN: 978-1-62708-311-9
... by induction. Although in some axles a portion of the hardened surface is used as a bearing, the primary purpose of induction hardening is to put the surface under a state of compressive residual stress. By this means, the bending and torsional fatigue life of an axle may be increased by as much as 200% over...