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torsional fatigue

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Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000608
EISBN: 978-1-62708-181-8
..., Metallurgical Consulting Services Ltd.) Fig. 375 Reversed torsional fatigue fracture of splined shaft due to overtempering. The SAE 4150 part was oil quenched and tempered to 34 HRC throughout—a hardness too soft for the application. Note the “starry” pattern characteristic of multiple fatigue cracks...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001808
EISBN: 978-1-62708-180-1
... and/or torsional forces. In addition to failures in shafts, this article will discuss failures in connecting rods, which translate rotary motion to linear motion (and conversely) and in piston rods, which translate the action of fluid power to linear motion. abrasive wear adhesive wear axial fatigue...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000607
EISBN: 978-1-62708-181-8
... Abstract This article is an atlas of fractographs that helps in understanding the causes and mechanisms of fracture of high-carbon steels and in identifying and interpreting the morphology of fracture surfaces. The fractographs illustrate the following: torsional fatigue fracture, hydrogen...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000606
EISBN: 978-1-62708-181-8
... Abstract This article is an atlas of fractographs that helps in understanding the causes and mechanisms of fracture of medium-carbon steels and in identifying and interpreting the morphology of fracture surfaces. The fractographs illustrate the torsional-fatigue fracture, cup and cone tensile...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003320
EISBN: 978-1-62708-176-4
.... It provides an account of the various biaxial and multiaxial fatigue testing methods, specimen geometries, and stress intensity factors important in the study multiaxial fatigue. Widely used test methods are the torsion-rotating bending fatigue test and biaxial and triaxial fatigue tests. Common specimen...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005864
EISBN: 978-1-62708-167-2
... fatigue life ( Ref 1 ). It is the case depth that is primarily responsible for the torsional strength and performance of the shaft. Case depth can be measured in different ways. In this article, case depth is defined by two points: one called effective case depth and one called total case depth...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002366
EISBN: 978-1-62708-193-1
... Fig. 1 Correlation of effective strain amplitude versus N f for axial and torsional fatigue of Haynes 188 cobalt-base alloy at 760 °C. Note that the torsional data are shifted to the right. Source: Ref 19 . Fig. 2 Correlation of plastic hysteresis energy versus N f for 1% Cr...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003544
EISBN: 978-1-62708-180-1
...-life criterion gas porosity heat treatment inclusions infinite-life criterion internal bursts macropitting micropitting reversed bending rolling-contact fatigue rotational bending strengthening stress distribution subcase fatigue thermal fatigue torsional loading FATIGUE damage...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005873
EISBN: 978-1-62708-167-2
... affect the yield and ultimate strengths as well as the fatigue life of a component. The fact that tempering may produce a certain result in tension does not necessarily mean the same result will be seen in bending or in torsion. Therefore, it is good practice to evaluate a component under the actual...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006779
EISBN: 978-1-62708-295-2
... presentation have been proposed. Figure 6 shows different approximations of the fatigue diagram. The shape of the diagram depends mainly on the material, the geometry of the component, and the type of loading (axial, bending, torsion, and shear). The lines are determined by the ultimate tensile strength, S...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006776
EISBN: 978-1-62708-295-2
... the articles “Monotonic Overload and Embrittlement” and “Mechanisms and Appearances of Ductile and Brittle Fracture in Metals” in this Volume). As previously noted, fatigue fractures often initiate at free surfaces. Stresses are frequently higher at free surfaces, particularly under bending and torsion...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003321
EISBN: 978-1-62708-176-4
... will perform under load. The most common application of these data is for shafts that are rapidly brought up to an operating speed and supplement the torsional fatigue data on these sections. The test is rarely performed on solid specimens due to the more complex stress state that exists in this geometry...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002398
EISBN: 978-1-62708-193-1
.... Moore rotating beam. (b) Torsion fatigue Fig. 10 Effect of defect size on fatigue endurance limits of cast steel. Source: Ref 5 Fig. 11 Goodman diagram for the bending fatigue (R.R. Moore) of 8630 cast steel (normalized and tempered) for determining the fatigue limits in terms...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003539
EISBN: 978-1-62708-180-1
... surface aid in identifying the fatigue fracture area at the lower left corner. Source: Ref 15 Under cyclic or fluctuating torsional loading, fatigue cracks may initiate on planes of maximum shear. Propagation principally occurs on planes normal to the direction of resolved tensile stress ( Fig...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003319
EISBN: 978-1-62708-176-4
.... For example, for a mullite with a region I fatigue parameter of n = 41 as measured with the double-torsion method, the use of stress rates greater than 1 MPa/s resulted in an estimated value of n = 19 ( Ref 105 ). For a silicon nitride with a parameter of n = 66, the values estimated from dynamic...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000610
EISBN: 978-1-62708-181-8
... candy fracture, cleavage fracture, brittle fracture, high-cycle fatigue fracture, fatigue striations, hydrogen-embrittlement failure, creep crack propagation, fatigue crack nucleation, intergranular creep fracture, torsional overload fracture, stress-corrosion cracking, and grain-boundary damage...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003269
EISBN: 978-1-62708-176-4
... to sheet materials. Furthermore, the test equipment required to provide the several different types of loads is complicated ( Ref 21 ). One facility used for multiaxial fatigue testing consists of a servohydraulic axial/torsion machine (up to 400 kN axial load and 1000 N · m torque) fitted with two...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.9781627081672
EISBN: 978-1-62708-167-2
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
...-relaxation testing. Shear testing, torsion testing, and formability testing are also discussed. The discussion of tension testing includes information about stress-strain curves and the properties described by them. compression testing fatigue testing formability testing fracture testing hardness...
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
..., and stress-relaxation testing. Shear testing, torsion testing, and formability testing are also discussed. The discussion of tension testing includes information about stress-strain curves and the properties described by them. compression testing fatigue testing formability testing fracture testing...