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Published: 01 June 2019
Fig. 1 This forward housing assembly of a guided munition for the U.S. Air Force was permanent-mold cast of aluminum alloy A357. It is a geometrically complex component that plays a critical role in the system's aerodynamic structure. More
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Published: 01 December 1993
Fig. 8 Force vs. temperature for a specimen machined from a kingpin from the same heat as the first failed kingpin, and pulled in an increasing temperature test. The specimen was pulled at 2 mm/min. (0.08 in./min.) while the temperature was increased at 1 ° C/s (1.8 °F/s). More
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Published: 01 June 2019
Fig. 3 Fracture surface of the crack which has been forced open. 2× More
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Published: 01 June 2019
Fig. 5 The control room for the Monitor system showing the master-slave force-feedback manipulator controls and the television screens More
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Published: 01 June 2019
Fig. 1 Mechanically forced shearing fracture of type 316LR stainless steel screw. (a) Fracture surface with typical spiral deformation texture. SEM. (b) Close-up of fracture surface with shear dimples oriented in twisting direction. (c) Fracture edge with flow lines. (d) Longitudinal More
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Published: 01 December 2019
Fig. 11 Contact force (Third rotation position) More
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Published: 01 December 2019
Fig. 12 Contact force for tow angular velocities (solid line N = 800 rpm, dashed line N = 4000 rpm) More
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Published: 01 December 2019
Fig. 16 Contact force of the a disk cam with translating roller follower ( e = 0) More
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Published: 01 December 2019
Fig. 17 Contact force for a disk cam with an offset roller follower (Camshaft angular velocity N = 800 rpm). ( a ) Cam without crack and ( b ) cam with crack More
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Published: 01 December 2019
Fig. 9 Scanning electron microfractograph of crack forced open in laboratory (see Fig. 7 ). Evidence of liquation cracking. Formerly molten low-melting grain boundary phases bridging between grains More
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Published: 01 December 2019
Fig. 10 Scanning electron microfractograph of crack forced open in laboratory (see Fig. 7 ). Fracture surface was etched for 2 min with “V2A etchant” at 80 °C. Evidence of formerly molten low-melting eutectic phases, probably a carbide eutectic, on grain boundaries ( arrows ) More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001522
EISBN: 978-1-62708-235-8
... of the part dimensions had not produced the mechanical properties required throughout the casting. The result was a major delay in the delivery schedule and quality of assured parts. At the request of the manufacturer, the Boeing Company, research scientists, and engineers in the Air Force Research...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001762
EISBN: 978-1-62708-241-9
... a microscope. The pre-existing crack morphology was intergranular fracture in the axles studied. An estimate of the force required to cause the axle fracture can be made using the measured crack size, fracture toughness determined from these tests, and linear elastic fracture mechanics. The axle can...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c0089657
EISBN: 978-1-62708-233-4
... Abstract The gun mount used in two types of self-propelled artillery consists of an oil-filled recoil cylinder and a sand-cast (MIL-I-11466, grade D7003) ductile-iron piston that connects to the gun tube through a threaded rod. The piston contains several orifices through which oil is forced...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c0047779
EISBN: 978-1-62708-223-5
... Abstract Two A6 tool steel (free machining grade) shafts, parts of a clamping device used for bending 5.7 cm OD tubing on an 8.6 cm radius, failed simultaneously under a maximum clamping force of 54,430 kg. The shaft was imposed with cyclic tensile stresses due to the clamping force...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047076
EISBN: 978-1-62708-217-4
... notches, acting in combination with lateral forces evidenced by the moderate distortion of the fastener holes. Recommendations included eliminating the surface defects by revised cleaning and/or forming procedures. Revised design and installation should also alleviate the lateral forces. Aircraft...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001216
EISBN: 978-1-62708-217-4
... is described in specimens made of clad aluminum sheet of alloy type AlZnMgCu1.5. Addressed are a dimple with partially missing stamped surface (bell-mouth), a cylindrical prominence because the dimpling force was too great and the stamping cylinder force too low, and a dimple with flashes at the top surfaces...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001487
EISBN: 978-1-62708-234-1
... of the strip conductor due to centrifugal force. This leads to a high frictional binding force between turns and prevents axial expansion under normal heating in service. Rotor trouble which proved to be due to copper shortening was found in a set rated at 27.5 MW. It was manufactured in 1934 at which time...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0047352
EISBN: 978-1-62708-221-1
... induces complete failure to the load-bearing section. The premature failure of these liners was caused by severe localized overstress conditions due to localized impact in service. Proper backing of shell liners should be ensured to reduce the effect of impact forces in the ball mill. Ball mills...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0047570
EISBN: 978-1-62708-221-1
... specified for the pipe steel was 0.25C-0.98Mn-3.52Ni-1.34Cr-0.24Mo, which approximates a 9300 steel with high molybdenum. Investigation supported the conclusion that the conveyor pipe failed by brittle fracture, which was attributed to the stresses induced in forcing the circular flange over the elliptical...