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elastic limits

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Published: 01 June 2019
Fig. 12 Comparison of elastically calculated stress range to limits imposed by codes. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001178
EISBN: 978-1-62708-235-8
... a galvanic surface treatment. Such parts will rupture below the elastic limit during continuous stressing. This often occurs only after the expiration of a certain time period, and preferably at locations of stress concentrations such as changes in cross section or threads. As a rule, the hydrogen cannot...
Image
Published: 01 December 1993
Fig. 3 Possible tearing mechanism during trimming. The punch pulls part of the material with it, causing stresses at the grain boundaries. Grains may separate and tear if the elastic limits reached. More
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001766
EISBN: 978-1-62708-241-9
... ft-lbf was the elastic limit of the screw anchor. While in many applications, the onset of bulk plastic deformation is considered to constitute failure of a component, it is not true in all cases. The structural analysis, however, employed this design/failure criterion in its interpretation...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006780
EISBN: 978-1-62708-295-2
... of creep-related failures, where the mechanical strength of a material becomes limited by creep rather than by its elastic limit. The majority of information provided is applicable to metallic materials, and only general information regarding creep-related failures of polymeric materials is given...
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
..., a portion of the conductor is stressed in compression beyond its elastic limit, causing permanent distortion so that, on cooling at standstill, an overall contraction occurs. If the cycle is repeated, further contraction takes place, the amount diminishing with each successive cycle until, ultimately...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c0048407
EISBN: 978-1-62708-226-6
... and fatigue initiation curves indicated that a local stress concentration of 500 to 600 MPa (72 to 87 ksi) was present. This load would still be below the elastic limit of the cold-worked stainless steel. No fatigue cracks were visible on the broad section of the asymmetrically placed hole. Thus, fatigue...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001811
EISBN: 978-1-62708-241-9
... of the bainite induced the mechanical stresses, upon cooling, which will be distributed equally in all directions. However, the regions having the retained austenite did not sustain the stresses thus forcing the tube to deform. The produced stresses are well within the range of elastic limit, as when one end...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003573
EISBN: 978-1-62708-180-1
.... deformation distortion distortion failure analysis elastic distortion inelastic cyclic buckling load limits ratcheting THIS HANDBOOK is organized according to four general categories of failure: fracture, corrosion, wear, and the subject of this article, distortion. One reason metals are so widely...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001440
EISBN: 978-1-62708-235-8
... that it varies from one material to another and may be influenced by such factors as time and temperature. In the case of annealed steel, a stress in excess of the elastic limit appears to be necessary, but if the material has been cold-worked, as in the case under consideration, then penetration may occur...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006797
EISBN: 978-1-62708-295-2
... to fatigue or elastic buckling or in designing flaw-tolerant structures. Limit analysis assumes an idealized material—one that behaves elastically up to a certain yield strength, then does not work harden but undergoes an indefinite amount of plastic deformation with no change in stress. The inherent...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006761
EISBN: 978-1-62708-295-2
..., but are not limited to: Elastic deformation properties, that is, the modulus of elasticity (Young’s modulus) and Poisson’s ratio (in some instances). Proportional limit Yield strength and ultimate tensile strength Ductility properties, such as elongation and reduction in area Strain-hardening...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006819
EISBN: 978-1-62708-329-4
... ). In the mid-1800s, Wohler conducted experiments to establish a safe alternating stress below which failure would not occur in full-scale railroad axles and smaller laboratory specimens to establish the endurance-limit concept for design ( Ref 6 ). In the late 1800s, Bauschinger studied the relationship...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.9781627082952
EISBN: 978-1-62708-295-2
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003513
EISBN: 978-1-62708-180-1
... approach of Dowling and Townley ( Ref 11 ). The CEGB approach ( Ref 3 , 12 , 13 ) addressed post-yield fracture by an interpolation formula between two limiting cases: linear elastic fracture and plastic collapse. The interpolation formula, known as the failure assessment or R6 curve ( Fig. 1...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0051293
EISBN: 978-1-62708-225-9
... stainless steel, and the operating stresses were safely within the design limits given by the Goodman diagram. The springs were revealed by scanning electron microscopy to contain numerous cracks on their inside surface, and these cracks were all at 45 deg to the wire axis. The solution was recommended...
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
... on unloading. If metals are loaded beyond a point called the elastic limit, the body does not return to its original shape with unloading. Metals are said to yield and the relationship between stress and strain typically may become nonlinear. (Note: the elastic limit and the yield point or yield stress...
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
... to these linear stress-strain relationships during the initial part of their loading. Most stress analyses are based on this linear-elastic relationship. The requirement for elastic behavior is that the body returns to its original shape on unloading. If metals are loaded beyond a point called the elastic limit...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006773
EISBN: 978-1-62708-295-2
... and in the analysis of a failed component. However, it has its limitations in that only relatively simple and idealized structures can be analyzed using simplified loading and materials property assumptions. When complex designs, transient loadings, and nonlinear material behavior must be evaluated, computer-based...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003526
EISBN: 978-1-62708-180-1
... analysis or plate theory provides a simple and quick way to estimate stresses and deformations in structures and components. It is usually the first technique in both the design of a component and in the analysis of a failed component. However it has its limitations in that only relatively simple...