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stress raisers

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Published: 01 September 2008
Fig. 2 Effected of stress raisers on stress concentration and distribution of stress at several changes of form in components. (a) to (c) Progressive increases in stress with decreasing fillet radii. (d) to (f) Relative magnitude and distribution of stress resulting from uniform loading. (g More
Image
Published: 01 September 2008
Fig. 28 Schematic of wrist pin. Note stress raisers at “A” and the rough machining on surface “B.” Source: Ref 18 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130255
EISBN: 978-1-62708-284-6
... on the effects of materials and quench process design on distortion of steel during heat treating. Details on stress raisers and their role in quench cracking are then presented. The chapter ends with various selected case histories of failures attributed to the quenching process. quenching phase...
Image
Published: 01 August 2005
Fig. 2.77 Schematic residual stress distribution resulting from geometric-induced yielding at a stress raiser More
Image
Published: 01 October 2011
Fig. 6.7 Uniform, unbroken grain flow around the contours of the forged head of a threaded fastener. The uniform, unbroken grain flow minimizes stress raisers and unfavorable shear planes and therefore improves fatigue strength. More
Image
Published: 01 August 2005
the radial zone, because fracture initiates near the root of the notch (and completely around the specimens in this idealized case without additional stress raisers). Fast final fracture occurs in the center. More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270165
EISBN: 978-1-62708-301-0
.... The sharp fillet acts as a stress raiser and lowers the threshold value of the stress-intensity factor for crack initiation. Conclusion The cracking of the LP filter bowl and the HP filter head was due to fatigue. The fatigue crack in both cases initiated at transition regions on the inner surface...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270177
EISBN: 978-1-62708-301-0
... as the cause of fracture of the gear. The fatigue crack had initiated at the inner corner of the rim where an elongated MnS inclusion was present at the critical location near the surface. Elongated MnS inclusions act as stress raisers and are potential sites for crack initiation. The presence of a hardened...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540391
EISBN: 978-1-62708-309-6
... discussion focuses on K SSF in association with fastener holes in attachment joints. As always, the local peak stress at a stress raiser point is equal to: (Eq A5.1) σ peak = K SSF ⋅ S REF where S REF is the reference stress, which is usually the gross-section...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.tb.sfa.t52780109
EISBN: 978-1-62708-268-6
... loads and compares these stresses to the strength of the material. The analysis also considers the effects of stress raisers in the component design. Such things as sharp corners or other dimensional characteristics that greatly increase stresses experienced by a component can induce stress raisers...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200144
EISBN: 978-1-62708-354-6
... to the greatest stresses. It is generally better not to locate riser contacts in areas of greatest stress because metal removal in the contact area, e.g., grinding marks, may remain and introduce stress raisers. The center portion of the beam, containing a hole in the finished condition, was cast solid...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.tt2.9781627083553
EISBN: 978-1-62708-355-3
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.tt2.t51060265
EISBN: 978-1-62708-355-3
... of a portion of the length of a cylindrical shell or tube. nominal stress. The stress at a point calculated on the net cross section by simple elasticity theory without taking into account the effect on the stress produced by stress raisers such as holes, grooves, llets, etc. Glossary of Terms / 269 normal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540121
EISBN: 978-1-62708-309-6
... Abstract This chapter examines the stress-strain characteristics of metals and alloys subjected to cyclic loading and the cumulative effects of fatigue. It begins by explaining how a single load reversal can lower the yield stress of a material and how repeated reversals can cause strain...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630281
EISBN: 978-1-62708-270-9
..., that cause local increases in stress on a metal under load. Typical are sharpcornered grooves, threads, fillets, holes, and the like. Effect is most critical when the stress concentration is perpendicular (normal) to the principal tensile stress. Same as notch or stress raiser. stress corrosion. Preferential...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610585
EISBN: 978-1-62708-303-4
... examples of design deficiencies include unintended stress raisers due to excessively sharp notches (e.g., in keyways on shafts) or insufficient radii (e.g., on shafts at bearing journals). Other examples include unanticipated residual stresses associated with heat treated parts designed with complex...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540431
EISBN: 978-1-62708-309-6
.... (or exposure of the stressed metal to hydro- global stress. The stress at a point calculated on gen) and the onset of cracking. Also referred the global coordinate system by simple elas- to as static fatigue. ticity theory without taking into account the effect induced by stress raisers such as holes...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180197
EISBN: 978-1-62708-256-3
... (normal) to the principal tensile stress. Same as notch or stress raiser. stress corrosion. Preferential attack of areas under stress in a corrosive environment, where such an environment alone would not have caused corrosion. stress-corrosion cracking. Failure by cracking under combined action...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.9781627082563
EISBN: 978-1-62708-256-3
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540047
EISBN: 978-1-62708-309-6
... Abstract This chapter examines the phenomena of deformation and fracture in metals, providing readers with an understanding of why it occurs and how it can be prevented. It begins with a detailed review of tension and compression stress-strain curves, explaining how they are produced and what...