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roughness
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Image
Published: 01 January 2002
Fig. 12 Dependence of profile roughness parameter ( R L ) on ruler length η. (a) Schematic illustration of the experimental trend of dependence of profile roughness parameter on the ruler length η. (b) Plot of R L (η) versus η for fracture profile from the tensile fracture surface of AISI
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Published: 01 January 2002
Fig. 14 Quantitative correlation between the roughness parameter, R S , and stress-intensity factor range ΔK for fatigue specimens of two cast irons. (a) D4018 cast iron. (b) D5506 cast iron. Source: Ref 12 , 88
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Image
Published: 01 January 2002
Fig. 3 Change in surface roughness due to crack propagation. Fracture surface roughness increases with distance of propagation, crack propagation rate, and decreased strength level. This component failed in fatigue. Crack initiation was on a longitudinal plane visible at the top in a surface
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Published: 01 January 2002
Fig. 5 Correction factors for surface roughness ( K s ), type of loading ( K 1 ), and part diameter ( K d ) for fatigue life of steel parts. See text.
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Published: 01 January 2002
Fig. 31 Changes in surface roughness as a function of the number of fretting cycles for metal-to-metal contact. (a) As received. (b) 10 3 cycle. (c) 5 × 10 4 cycles. (d) 3 × 10 5 cycles
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Published: 15 January 2021
Fig. 4 Change in surface roughness due to crack propagation. Fracture surface roughness increases with distance of propagation, crack propagation rate, and decreased strength level. This component failed in fatigue. Crack initiation was on a longitudinal plane visible at the top in a surface
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Image
in Coil Spring Failures in Aerospace Hardware
> ASM Failure Analysis Case Histories: Mechanical and Machine Components
Published: 01 June 2019
Fig. 5 Right — Surface roughness associated with origin of fatigue crack failure of some type 302 springs.
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in Prevention of Machining-Related Failures
> Analysis and Prevention of Component and Equipment Failures
Published: 30 August 2021
Fig. 9 Illustration of surface texture: roughness, waviness, lay, and flaws. Source: Ref 13 . Reprinted from ANSI/ASME B46.1-1985, by permission of The American Society of Mechanical Engineers. All rights reserved
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Image
Published: 01 January 2002
Fig. 17 AISI M2 roughing tool that cracked just after heat treatment. (a) Cracks accentuated with magnetic particles. (b) Microstructural examination revealed a badly overaustenitized condition with a heavy grain-boundary carbide film, coarse plate martensite, and unstable retained austenite
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Image
Published: 01 January 2002
Fig. 30(a) Moil point made of AISI W1 tool steel that exhibited a rough, scaled surface after heat treatment. The actual size of the moil point is shown at left. An enlarged view (3×) at the surface condition, which resulted in erratic surface hardness, is shown at right. See also Fig. 30(b) .
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Published: 01 January 2002
Fig. 25 Machining flaw as fracture origin in glass. Rough surface is the bottom of a groove cut by a diamond saw. SEM; picture width ∼200 μm. Source: Ref 9
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in Steel Sliver in a Continuously Cast Aluminum Press Stud
> ASM Failure Analysis Case Histories: Machine Tools and Manufacturing Equipment
Published: 01 June 2019
Fig. 2 Structure of a sliver, etch: Nital. a). View. 100× Top (rough and spongy): metal center (fissured): alloy bottom (etched): steel. Structure of a sliver, etch: Nital. b). Steel structure. 500× Structure of a sliver, etch: Nital. c). Metal structure. 500×
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Image
Published: 15 January 2021
Fig. 35 Centrifugal pump shaft (Example 21). (a) Image of the rough pump shaft fracture surface. (b) Electron image showing intergranular fracture surface. Original magnification: 274×. (c) Shaft cross section showing branching intergranular cracking of brittle fracture. Original magnification
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in An Investigation of the Development of Defects During Flow Forming of High Strength Thin Wall Steel Tubes
> ASM Failure Analysis Case Histories: Processing Errors and Defects
Published: 01 June 2019
Fig. 15 Comparative surface roughnesses at different roller feed rates
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in Corrosion Failure of Stainless Steel Thermowells
> Handbook of Case Histories in Failure Analysis
Published: 01 December 1993
Fig. 4 SEM micrograph of rough surface inside a failed thermowell, caused by removal of longitudinal inclusions
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Image
Published: 30 August 2021
Fig. 17 AISI M2 roughing tool that cracked just after heat treatment. (a) Cracks accentuated with magnetic particles. (b) Microstructural examination revealed a badly overaustenitized condition with a heavy grain-boundary carbide film, coarse plate martensite, and unstable retained austenite
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Image
Published: 30 August 2021
Fig. 30 (a) Moil point made of AISI W1 tool steel that exhibited a rough, scaled surface after heat treatment. The actual size of the moil point is shown at left. An enlarged view (3×) at the surface condition, which resulted in erratic surface hardness, is shown at right. (b) Cold-etched (10
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Image
in Failure Analysis of Railroad Components
> Analysis and Prevention of Component and Equipment Failures
Published: 30 August 2021
Fig. 41 Burned-off journal stub. The short, rough stub indicates high heat over a short time period and is associated with an inner cone failure
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in Failures Related to Metal Additive Manufacturing
> Analysis and Prevention of Component and Equipment Failures
Published: 30 August 2021
Fig. 19 Rough surface on a Ti-6Al-4V powder-bed-fusion-processed cylinder
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Published: 30 August 2021
Fig. 16 (a) Image of Monel shaft fracture location (left). The relatively rough fracture was through a threaded region with an abrupt change in section thickness. (b) Oblique view of the relatively rough fracture surface of the centrifugal pump shaft. (c) All regions of the fracture surface
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