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fillet radius

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Image
Published: 01 January 2002
Fig. 10 Effect of size of fillet radius on stress concentration at a change in shaft diameter. See text for discussion. More
Image
Published: 30 August 2021
Fig. 20 Effect of size of fillet radius on stress concentration at a change in shaft diameter. See text for discussion More
Image
Published: 01 June 2019
Fig. 1 Tiny cracks at the fillet radius and base edges, at × 0.75 More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001557
EISBN: 978-1-62708-234-1
... Abstract A number of machined end frame steel forgings made of Cr-Si-Mn alloy showed tiny cracks during magnetic particle inspection after heat treatment. The cracks were mostly confined to base edges and fillet radius. No significant abnormality was observed in chemical composition...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0046205
EISBN: 978-1-62708-225-9
... include redesign of the fillet radius to a minimum of 1.6 mm (0.06 in.) and a maximum surface finish in the spline area of 0.8 microns. Material for the shafts should be modified to a nickel alloy steel, heat treated to a hardness of 28 to 32 HRC before machining. Ductile brittle transition Shafts...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001467
EISBN: 978-1-62708-224-2
.... The material was a mild steel in the normalized condition. The appearance of the fracture indicated failure was due to bending stresses. The absence of any fillet radius at the reduction in diam provided a region of stress concentration from which fatigue cracks developed. Diameter Hoists Radii Shafts...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001461
EISBN: 978-1-62708-224-2
... Abstract A hook, which was marked for a safe working load of 2 tons, failed while lifting a load of approximately 35 cwts. Fracture took place at the junction of the shank with the hook portion, at which no fillet radius existed. Except for an annular region round the periphery, which...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001788
EISBN: 978-1-62708-241-9
... for flat extrusion die and account for bearing length, fillet radius, temperature, and strain rate. They were shown to provide useful information for the analysis and prevention of die failures. extrusion die fatigue failure die design tool steel cracking fractography strain rate H13 (hot-work...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001794
EISBN: 978-1-62708-241-9
... propagation occurred on about 95% of the total cross section of the shaft, under both low-cycle and high-cycle fatigue mechanisms. It was found that the fillet radius at the fracture’s origin was smaller than the one provisioned by design. As a result, the stresses at this location exceeded the values used...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001466
EISBN: 978-1-62708-221-1
... arising from misalignment were responsible for the fatigue failure, which occurred in a region of stress concentration where insignificant fillet radius had been provided. Bend properties Gear boxes Hoists Stress concentration Alloy steel Fatigue fracture This shaft, which carried both...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001289
EISBN: 978-1-62708-215-0
... Abstract The repeated occurrence of random cracks in the fillet radius portion of low-alloy steel (38KhA) end frame forgings following heat treatment was investigated. Microstructural analyses were carried out on both the failed part and disks of the rolled bar from which the part was made...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001288
EISBN: 978-1-62708-215-0
... had failed in fatigue as a result of a high stress concentration in a sharp 0.6 mm (0.02 in.) radius fillet. Stress analysis and fracture mechanics predictions revealed that there was also danger of fatigue failure for platens with the design radius of 10 mm (0. 4 in.) if the press operates at 800...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0048630
EISBN: 978-1-62708-217-4
... to finger-tightness, and the consequent wrench torquing caused the actual fractures. The very small radius of the fillet between the bolt head and the shank undoubtedly accentuated the embrittling effect of the hydrogen. To prevent reoccurrence, the cleaning and cadmium-plating procedures were stipulated...
Image
Published: 01 December 2019
Fig. 9 Axial sectional microstructure of transition fillet region between the cylinder and the plate: ( a ) general view showing fillet radius and ( b ) microstructure More
Image
Published: 01 December 2019
Fig. 8 Variation of die life cycles (number of billets extruded) with die bearing length ( a ) and die fillet radius ( b ) More
Image
Published: 01 January 2002
Fig. 43 Micrograph of AISI 4142 steel as quenched and tempered. The microstructure is tempered martensite with quench cracking at the fillet radius. 100×; 3% nital etch. Source: Ref 27 More
Image
Published: 30 August 2021
Fig. 29 Optical microscopy image of part of the fracture surface of a bone fixation plate. Beach marks can be seen in the image emanating from the filleted radius at the top (medial side) of the fixation hole. More
Image
Published: 30 August 2021
Fig. 30 Scanning electron microscopy image of fracture origin in a bone fixation plate. The black arrow indicates the origin of the fatigue fracture emanating from a filleted radius from one of the fixation holes. More
Image
Published: 01 December 2019
s –1 , die bearing land = 10 mm, and fillet radius = 2 mm More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001575
EISBN: 978-1-62708-217-4
..., the components were inspected under stereomicroscope. The main information gained from this first examination were: - driven gear relative to compartment 5 brg was found frozen with upper and lower spacers. Gear teeth side faces and fillet radius area showed thermal discoloration by the friction effect...