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rotating-beam reversed-bending fatigue test

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140253
EISBN: 978-1-62708-335-5
...Abstract Abstract This data set contains the results of rotating-beam reversed-bending fatigue tests for a wide range of aluminum casting alloys. These fatigue curves are the results of tests on individual lots of material considered representative of the respective alloys and tempers...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140301
EISBN: 978-1-62708-335-5
... (ASTM B 26/B 26M). Dimension in inches The rotating beam fatigue specimens ( Fig. A3.2 ) were tested in R.R. Moore rotating beam fatigue machines. In such tests, the stresses are completely reversed in bending (stress ratio R = –1.0), so that maximum outer fiber tensile and compressive stresses...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610147
EISBN: 978-1-62708-303-4
... the abusive grinding of 4340 steel quenched and tempered to 50 HRC. UTM, untempered martensite. Source: Ref 27 Fig. 51 Effect of electrical discharge machining (EDM) and grinding on the fatigue strength of Inconel 718. Fatigue tests involved cantilever bending at room temperature and zero mean...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250311
EISBN: 978-1-62708-345-4
..., the chapter describes the test procedures for surface durability (pitting), root strength (bending), and scoring (or scuffing) testing. durability fatigue test gear failure gears mechanical testing residual stress rolling contact fatigue test single-tooth fatigue test single-tooth overload test...
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
... Fig. 8 Electron micrograph showing a block-loaded test article with a band of 10 cycles of a higher load. Source: Ref 2 Fig. 17 Surface of a fatigue fracture in a grade 1050 steel shaft, with hardness of about 35 HRC, that was subjected to rotating bending. The presence of numerous...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870237
EISBN: 978-1-62708-344-7
... surface deterioration can also be accomplished by the use of lasers. Here, the surface of a fatigue specimen is exposed to an intense laser beam impacted at an angle. The intensity of the reflected beam depends on the surface smoothness. So long as the surface remains smooth, a good reflected beam...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870085
EISBN: 978-1-62708-299-0
... 35 ). Fig. 14 Examples of fretting fatigue test configurations. (a) Cantilever beam reverse bending with single pads. (b) Rotating fully reversing bending with double foot-pad bridges and proving ring The influence of fretting on fatigue strength can be determined by subjecting a sample...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.9781627083447
EISBN: 978-1-62708-344-7
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250293
EISBN: 978-1-62708-345-4
... fatigue capacity (pitting resistance) rather than on its cantilever beam capacity (capacity to resist tooth breakage). Life Determined by Contact Stress The surface contact stress, S c , between gear teeth (discussed further in Ref 1 with in-depth presentations of gear rating calculations...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870157
EISBN: 978-1-62708-344-7
... bending fatigue and axial fatigue strength when the latter is expressed in terms of actual stresses and strains. When plasticity is involved, the elastically calculated stresses in a beam can be significantly higher than the actual stresses. When axially loaded samples are tested, the actual stresses can...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630189
EISBN: 978-1-62708-270-9
... shaped cantilever beams. This gear tooth pitted just below the pitch line and then fractured as a result of bending fatigue. The normal location for bending fatigue fractures of gear teeth is at the root fillet, not midway up the tooth, as in this example. This gear was made from a medium-carbon steel...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140069
EISBN: 978-1-62708-335-5
...) The modulus of zinc is not well defined; these values are lower limit estimates. The damping characteristics of two aluminum casting alloys, 319.0 and 356.0, as determined in cantilever-beam vibration tests ( Ref 11 ), are presented in Fig. 8.1 , where they are compared with the band for wrought...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240243
EISBN: 978-1-62708-251-8
..., is commonly used in testing. This is the type of stress produced, for example, by the R.R. Moore rotating-beam fatigue machine shown in Fig. 14.2 , which is similar to what a shaft may encounter during service. Since this was the original type of machine used to generate fatigue data, quite a bit of the data...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610461
EISBN: 978-1-62708-303-4
... shaped cantilever beams. This gear tooth pitted just below the pitch line, then fractured as a result of bending fatigue. The normal location for bending fatigue fractures of gear teeth is at the root fillet, not midway up the tooth, as in this example. This gear was made from a medium-carbon steel...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200083
EISBN: 978-1-62708-354-6
... steels a 0.0015-in. (0.0381-mm) root radius circumferential notch in a rotating beam fatigue specimen reduces the fatigue limit to about 0.7 of the unnotched value. This is sufficient to account for variations in surface finish and minor surface discontinuities. Figure 6-11 shows that even severe...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870267
EISBN: 978-1-62708-344-7
... regardless of the fact that their toughness values were far different. However, in none of the tests involved in this program were the geometrical and materials factors such that fatigue failure occurred in a brittle fashion. The same materials, tested either with sharp notches, or using specimens of large...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630035
EISBN: 978-1-62708-270-9
... into two or more pieces after it has been resting on a floor, bench, or table under no external load. Yet this is not an uncommon situation and is within the experience of many persons who have worked with metals. A spectacular example was that of a 40-ft-long I-beam that was lying on a shop floor...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230209
EISBN: 978-1-62708-298-3
... mm for beryllium. The most common approved specimen used is the wedge-opening load specimen or its variant, the compact-tensile specimen, although the single-edge-notched-bend specimen is also approved by ASTM International. Other specimens, such as the double-cantilever beam (DCB) and the tapered...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250257
EISBN: 978-1-62708-345-4
...). Original magnification at 0.75× Fig. 8 Bending-fatigue fracture in two teeth of a reverse idler gear of AISI 8617 steel, carburized and hardened to 60 HRC in the case. Arrows point to the root fillets on both sides of each tooth, where fracture began due to excessive stress in these locations...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780238
EISBN: 978-1-62708-281-5
... of specimens used for total-life fatigue analysis. Tests can be done (a) in torsion, (b) with a rotating cantilever, (c) with a rotating beam, (d) with cantilever reverse bending, or (e) under axial loading In fatigue testing, the applied stress, σ a , is typically described by the stress amplitude...