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Reversed bending fatigue of a 40-mm (1.6-in.) diam AISI 1046 steel shaft (3...

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in Medium-Carbon Steels: Atlas of Fractographs > Fractography
Published: 01 January 1987
Fig. 217 Reversed bending fatigue of a 40-mm (1.6-in.) diam AISI 1046 steel shaft (30 HRC). Note the symmetrical fatigue pattern of beachmarks on each side, with the final rupture on the diameter. This indicates that each side of the shaft was subjected to the same maximum stress More
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Five fatigue-fracture surfaces that were produced in reversed bending in pn...

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in Tool Steels: Atlas of Fractographs > Fractography
Published: 01 January 1987
Fig. 759 Five fatigue-fracture surfaces that were produced in reversed bending in pneumatic testing machine. The material is AISI W1 tool steel. The lighter areas of the fracture surfaces are the fatigue zones—all of which were initiated at the lower right corners. Note the lack of beach marks More
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1040 steel fan shaft that fractured in reversed-bending fatigue. (a) Overal...

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in Failures of Shafts[1] > Failure Analysis and Prevention
Published: 01 January 2002
Fig. 24 1040 steel fan shaft that fractured in reversed-bending fatigue. (a) Overall view of shaft. Dimensions given in inches. (b) Fracture surface showing diametrically opposed origins (arrows) More
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Reversed bending fatigue life at room temperature for gray iron containing ...

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in Gray Iron > Metals Handbook Desk Edition
Published: 01 December 1998
Fig. 8 Reversed bending fatigue life at room temperature for gray iron containing 2.84% C, 1.52% Si, 1.05% Mn, 0.07% P, 0.12% S, 0.31% Cr, 0.20% Ni, and 0.37% Cu. Open circles represent notched specimens; closed circles represent unnotched specimens. More
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Grade 1040 steel fan shaft that fractured in reversed-bending fatigue. (a) ...

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in Failures of Shafts > Analysis and Prevention of Component and Equipment Failures
Published: 30 August 2021
Fig. 34 Grade 1040 steel fan shaft that fractured in reversed-bending fatigue. (a) Overall view of shaft. Dimensions given in inches. (b) Fracture surface showing diametrically opposed origins (arrows) More
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Effect of cryogenic temperature on reversed bending fatigue ( R = 1) of tr...

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in Fatigue Strength of Aluminum Alloy Welds > Fatigue and Fracture
Published: 01 January 1996
Fig. 6 Effect of cryogenic temperature on reversed bending fatigue ( R = 1) of transverse double-V butt welds in 5083-H113 0.375 in. plate and filler metal. Source: Ref 15 More
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Microscopic features in a notched specimen that failed via reversed-bending fatigue (Fig. 37). Local fatigue-crack propagation in five different views of striations, with the dimple-rupture overload zone at the overload site at bottom right. Courtesy of Element Materials Technology-Wixom

Microscopic features in a notched specimen that failed via reversed-bending...

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in The Role of Fractography in Metallurgical Failure Analysis > Fractography
Published: 01 June 2024
Fig. 38 Microscopic features in a notched specimen that failed via reversed-bending fatigue ( Fig. 37 ). Local fatigue-crack propagation in five different views of striations, with the dimple-rupture overload zone at the overload site at bottom right. Courtesy of Element Materials Technology More
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Nickel 200 specimen fatigued in reverse bending for 10 4 cycles. Use of di...

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in Light Microscopy > Metallography and Microstructures
Published: 01 December 2004
Fig. 48 Nickel 200 specimen fatigued in reverse bending for 10 4 cycles. Use of differential interference contrast illumination shows persistent slip bands with associated cracks outlined against a blue background. Chemically polished. 800×. (C.E. Price) More
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Reverse bending of a steel dovetail rod from a large generator. Fatigue initiated on opposite sides, propagating toward the center. The load reversal was incomplete, driving the upper crack in this image farther than the lower crack. The final overload (OL) region is a horizontal band.

Reverse bending of a steel dovetail rod from a large generator. Fatigue ini...

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in Macroscale Fracture Appearances > Fractography
Published: 01 June 2024
Fig. 27 Reverse bending of a steel dovetail rod from a large generator. Fatigue initiated on opposite sides, propagating toward the center. The load reversal was incomplete, driving the upper crack in this image farther than the lower crack. The final overload (OL) region is a horizontal band. More
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Reverse-bending fatigue showing (a) a fatigue surface with origins at the top, a region of ductile overload at the center, and fatigue from the other edge of the shaft at the bottom. The lighting is direct overhead light from a large light source. Postfracture damage is apparent as the bright regions on the fracture. These are reflecting the light source. (b) The same fracture illuminated with oblique light from a small light source located to the right. The fracture ridges, beach marks (yellow arrows), and a large ratchet mark (red arrow) are revealed.

Reverse-bending fatigue showing (a) a fatigue surface with origins at the t...

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in Photography of Fractured Parts and Fracture Surfaces > Fractography
Published: 01 June 2024
Fig. 15 Reverse-bending fatigue showing (a) a fatigue surface with origins at the top, a region of ductile overload at the center, and fatigue from the other edge of the shaft at the bottom. The lighting is direct overhead light from a large light source. Postfracture damage is apparent More
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Optical views of a reverse-bending fatigue failure in a rear-suspension spindle. (a) Optical view of entire fracture surface. (b) Magnified view showing three zones. Ratchet marks at top and bottom of view show fatigue-crack initiations on both sides of the component. (c) Further magnification of ratchet marks at bottom of image (b). Courtesy of Element Materials Technology-Wixom

Optical views of a reverse-bending fatigue failure in a rear-suspension spi...

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in The Role of Fractography in Metallurgical Failure Analysis > Fractography
Published: 01 June 2024
Fig. 16 Optical views of a reverse-bending fatigue failure in a rear-suspension spindle. (a) Optical view of entire fracture surface. (b) Magnified view showing three zones. Ratchet marks at top and bottom of view show fatigue-crack initiations on both sides of the component. (c) Further More
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Fracture surface of a specimen that was subjected to reverse-bending fatigue, resulting in the failure of a small shaft with a notch. Macroscopic crack propagation occurred in the horizontal orientation, as indicated by the crack-arrest line contours in the two directions of this reverse-bending fatigue failure. Failure was not fully reversed, because the overload zone is closer to the right of the specimen in the view. Courtesy of Element Materials Technology-Wixom

Fracture surface of a specimen that was subjected to reverse-bending fatigu...

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in The Role of Fractography in Metallurgical Failure Analysis > Fractography
Published: 01 June 2024
Fig. 37 Fracture surface of a specimen that was subjected to reverse-bending fatigue, resulting in the failure of a small shaft with a notch. Macroscopic crack propagation occurred in the horizontal orientation, as indicated by the crack-arrest line contours in the two directions More
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Typical reverse bending fatigue curve at room temperature for C86500

Typical reverse bending fatigue curve at room temperature for C86500

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in Properties of Cast Copper Alloys > Properties and Selection: Nonferrous Alloys and Special-Purpose Materials
Published: 01 January 1990
Fig. 21 Typical reverse bending fatigue curve at room temperature for C86500 More
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Typical reverse bending fatigue curve for C93700

Typical reverse bending fatigue curve for C93700

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in Properties of Cast Copper Alloys > Properties and Selection: Nonferrous Alloys and Special-Purpose Materials
Published: 01 January 1990
Fig. 40 Typical reverse bending fatigue curve for C93700 More
Book Chapter

Gray Iron

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003107
EISBN: 978-1-62708-199-3
... Abstract This article provides information on the classification, microstructure, castability and section sensitivity of gray iron. It describes properties of the test bar and provides a short note on fatigue limit in reversed bending. Although the ASTM size B test bar is the bar most commonly...
Abstract
This article provides information on the classification, microstructure, castability and section sensitivity of gray iron. It describes properties of the test bar and provides a short note on fatigue limit in reversed bending. Although the ASTM size B test bar is the bar most commonly used for all gray irons from classes 20 to 60, ASTM A 48 provides a series of bar sizes, and the user can select the bar sizes that best approximates the cooling rate in the critical section of the casting.
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Examples of fretting fatigue test configurations. (a) Cantilever beam rever...

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in Fretting Fatigue > Fatigue and Fracture
Published: 01 January 1996
Fig. 10 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 More
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Examples of fretting fatigue test configurations. (a) Cantilever beam rever...

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in Fretting Fatigue Testing > Mechanical Testing and Evaluation
Published: 01 January 2000
Fig. 10 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 More
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Effect of temperature on fatigue behavior of a gray iron (2.84% C, 1.52% Si...

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in Specifications and Selection of Gray Irons > Cast Iron Science and Technology
Published: 31 August 2017
Fig. 35 Effect of temperature on fatigue behavior of a gray iron (2.84% C, 1.52% Si, 1.05% Mn, 0.07% P, 0.12% S, 0.31% Cr, 0.20% Ni, 0.37% Cu). (a) Reversed bending fatigue life at room temperature. (b) Reversed bending fatigue limit at elevated temperatures. Source: Ref 56 More
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Effect of temperature on fatigue behavior and tensile strength of a gray ir...

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in Gray Iron Castings > Casting
Published: 01 December 2008
Fig. 17 Effect of temperature on fatigue behavior and tensile strength of a gray iron (2.84% C, 1.52% Si, 1.05% Mn, 0.07% P, 0.12% S, 0.31% Cr, 0.20% Ni, 0.37% Cu). (a) Reversed bending fatigue life at room temperature. (b) Reversed bending fatigue limit at elevated temperatures. (c) Tensile More
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Effect of temperature on fatigue behavior and tensile strength of a gray ir...

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in Gray Iron > Properties and Selection: Irons, Steels, and High-Performance Alloys
Published: 01 January 1990
Fig. 13 Effect of temperature on fatigue behavior and tensile strength of a gray iron (2.84% C, 1.52% Si, 1.05% Mn, 0.07% P, 0.12% S, 0.31% Cr, 0.20% Ni, 0.37% Cu). (a) Reversed bending fatigue life at room temperature. (b) Reversed bending fatigue limit at elevated temperatures. (c)Tensile More