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shearing defects

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001438
EISBN: 978-1-62708-224-2
... Showing shear fracture of weld metal and root defects. It was evident therefore that failure of the hook had taken place where a deposit of weld metal had been made, probably to eliminate a surface defect but apparently, without complete removal of the defect down to sound metal prior to welding...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0048835
EISBN: 978-1-62708-220-4
... areas during examination of a naphtha desulfurizer by ultrasonic shear wave techniques. Defect indications were found in longitudinal and circumferential seam welds of the ASTM A204, grade A, steel sheet. The vessel was found to have a type 405 stainless steel liner for corrosion protection...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003507
EISBN: 978-1-62708-180-1
..., internal bursts or chevron cracks, cracks on free surfaces, cracks on die-contacted surfaces Metal-flow-related problems: for example, end grain and poor surface performance; inhomogeneous grain size; shear bands and locally weakened structures; cold shuts, folds, and laps; flow-through defects...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001491
EISBN: 978-1-62708-217-4
... surface is presented in Figure 3 . The topmost crack occurred at a shear line defect about one inch forward of the throat. The shear line defect was introduced during tape wrapping by a split roller. The defect corresponded with the split in the roller. Fig. 3 Convergent Nozzle Insulator S/N 014R...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001820
EISBN: 978-1-62708-180-1
...Types of defects that can cause pipeline failures Table 1 Types of defects that can cause pipeline failures Causes of preservice test failures Defects in the pipe body Mechanical damage Fatigue cracks Material defects Longitudinal weld defects Submerged arc...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001672
EISBN: 978-1-62708-236-5
... be determined except that each fracture originated and propagated from the crack defect. Some evidence of secondary cracks or crack branching was also observed ( Figure 3 ). Macroscopic examination of these fracture surfaces revealed a shear lip covering about 80% of the perimeter. Shear lips of this magnitude...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001909
EISBN: 978-1-62708-235-8
... to the resistance welding parameters resulted in acceptable welds. Bombs (weapons) Bomb fins Welded joints Weld defects Low-carbon steel Joining-related failures Introduction Acknowledgment Reference Reference 1. Anon .: in Welding Handbook , 8th ed. , vol. 1 , Welding Technology...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0046057
EISBN: 978-1-62708-225-9
... that the microstructure was tempered martensite and the inclusion content was low. The fracture was brittle in appearance, and there were no shear lips. Examination also revealed a pit or burned spot on the outer of the ring (Section A-A, Fig. 1a and b ). The pit appeared as a semicircular defect in the fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001460
EISBN: 978-1-62708-221-1
... in. or so adjacent to the surface showing a shear type failure at an angle of approximately 45°. The fracture through the other weld, D, was of a coarser texture, but crack progression markings were also evident; final fracture at the weld surface again occurred by shearing. The appearance of the fractures...
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
... inclusions and forging bursts. Fatigue-crack propagation analysis can be used to evaluate such defects. Investigation Specimens for mechanical testing were obtained by slicing a 580 mm (23 in.) diam shaft forging into 75 mm (3 in.) thick disks. Tensile specimens and Charpy impact specimens were...
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
... 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 u , and the alternating fatigue strength...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001693
EISBN: 978-1-62708-228-0
... up and down from the defect when the stress induced by filling reached a critical value for the steel, which had poor toughness properties. This steel had been used in the original construction of a tank in Ohio more than 40 years previously. The defect at which brittle fracture originated...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003530
EISBN: 978-1-62708-180-1
... transformations to find maximum normal stresses (principal stresses) and maximum shear stresses as well as by some other special stress definitions. The section “Defects and Imperfections” in this article introduces the stress analysis of bodies containing cracklike imperfections and the topic of fracture...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006767
EISBN: 978-1-62708-295-2
... maxima to be used in a failure criterion. These maxima are determined by taking stress transformations to find maximum normal stresses (principal stresses) and maximum shear stresses as well as by some other special stress definitions. The section “Defects and Imperfections” in this article...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001659
EISBN: 978-1-62708-231-0
... with hardness and residual stress measurements are presented. These results suggest that the shell fractures form on the plane of maximum residual tensile stresses. The formation of the shells is aided by the presence of defects in the material in these planes of maximum residual stress. The detail fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001445
EISBN: 978-1-62708-227-3
... occurred longitudinally through the upper wall over a length of approximately 68 in. The sample received for examination was ultrasonically tested, which indicated a band of internal defects extending 1 in. in from the edge. Subsequently, the portion of the pipe embodying the other side of the rupture...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003563
EISBN: 978-1-62708-180-1
... of maximum and orthogonal shear stress. (b) Propagated subsurface cracks leading to coating delamination during RCF failure of WC-Co coating Fig. 15 Schematic of coating delamination process for cermet and ceramic coatings Fig. 16 Bulk deformation failure of WC-Co coating, indicating...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001819
EISBN: 978-1-62708-180-1
... the surface area and to allow microanchorage of the bone. Developments in the field of joint prostheses are progressing rapidly. In this article, only metallic components will be considered. Tumor Resections In tumor resections, large defects are created by extensive bone and joint removals, which...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001910
EISBN: 978-1-62708-217-4
... Society for Metals , Materials Park, OH , 1977 , p. 42. 4. Anon. : in Source Book on Maraging Steels , American Society for Metals , 1979 , p. 370 . Component: M61A1 breech bolt assembly Manufacturing defects: Improper chemistry, heat treatment Background The Investigation...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001731
EISBN: 978-1-62708-217-4
...-strength steels has been somewhat limited by their susceptibility to hydrogen embrittlement, the extremely detrimental effect of small defects, and high residual stresses that cannot be eliminated. Manufacturers and users are willing to struggle with the many design, fabrication and maintenance problems...