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Springs (elastic)

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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
... to select a grade of spring steel that would be more corrosion resistant than 302 stainless. Materials selection Spring steels Springs (elastic) Water feeders 302 UNS S30200 304 UNS S30400 Corrosion fatigue After six months of operating a new chicken house, a farmer noticed that the...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001267
EISBN: 978-1-62708-215-0
... marks on the inside edge of the spring. An investigation of loads encountered in service indicated that the springs had been loaded to a large fraction of the yield strength. Redesign of the spring mechanism was recommended. Springs (elastic) Woody fracture ASTM A228 UNS K08501 Fatigue...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001118
EISBN: 978-1-62708-214-3
... minimum tolerable defect size was also recommended. Aircraft components Commercial planes Lubrication systems Springs (elastic) Wire 321 UNS S32100 Metalworking-related failures Fatigue fracture Selected References • Maker J.H. , Failures of Springs , Failure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0046874
EISBN: 978-1-62708-229-7
... alloy, such as Hastelloy B or C. Relief valves Springs (elastic) Torsional fatigue H21 UNS T20821 Corrosion fatigue The safety valve on a steam turbogenerator was set to open when the steam pressure reaches 2400 kPa (348 psi). The pressure had not exceeded 1790 kPa (260 psi) when the...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001268
EISBN: 978-1-62708-215-0
... the engineering drawing ( Table 2 ). One coupon from each of the softer leafs (6a and 7a) failed to meet the drawing requirements. Table 2 Tensile properties Leaf spring coupon number Yield strength, 0.2% offset Ultimate tensile strength, Elongation, % Modulus of elasticity...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0051292
EISBN: 978-1-62708-225-9
... was operating. An alternative ink that contained no free chloride ions was recommended. Chlorides Printing Springs (elastic) 302 UNS S30200 Corrosion fatigue After only two months of use in a printing operation, type 302 stainless steel springs were breaking into several pieces. The...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0051294
EISBN: 978-1-62708-221-1
... direction. This movement into the unwind direction was concluded to be happening often enough to initiate fatigue. The stress relieving temperature was recommended to be increased to reduce the residual stresses from coiling and hence improve fatigue performance. Bending fatigue Springs (elastic...
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
... The leaf springs deflect substantially during side loading. Spring deflection and axle bending constitute stored elastic energy. This energy is suddenly released at the time of fracture. The axle is restrained from being shot out of the carrier by the C clip and a rebound effect produces a dynamic...
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
... fracture mechanics. The fracture mechanics approach is an important part of stress analysis at the tips of sharp cracks or discontinuities. The article reviews fracture mechanics concepts, including linear elastic fracture mechanics, elastic-plastic fracture mechanics, and subcritical fracture mechanics...
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
... elastic fracture mechanics analysis, with some mention of elastic-plastic fracture mechanics analysis. The article describes the probabilistic aspects of fatigue and fracture. Information on crack-growth simulation of the material is also provided. crack-growth simulation elastic-plastic fracture...
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
... article summarizes the general process of distortion failure analysis. It also discusses three types of distortion failures that provide useful insights into the problems of analyzing unusual mechanisms of distortion. These include elastic distortion, ratcheting, and inelastic cyclic buckling...
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
... even plastic distortion during their service lives. Springs of all types are an obvious example of a cyclic elastic distortion by design. Many of the examples earlier in this article have dealt with failures of springs through development of unwanted plastic distortion. Springs can also be...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001601
EISBN: 978-1-62708-235-8
... the strain produced by elastic recovery 8 and can cause dimensional distortions. When the load is released, elastic recovery will take place and spring back will occur ( Fig. 14 ). Fig. 14 Stress-strain curve for ductile material There is no theoretical model available to accurately...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006768
EISBN: 978-1-62708-295-2
... Stress Tensor Calculations Using Incorrect Lattice Parameters , Proc. 1994 SEM Spring Conference , Society for Experimental Mechanics , June 1994 29. Sasaki T. and Kobayashi Y. , “ X-Ray Multiaxial Stress Analysis Using Two Debye Rings ,” JCPDS-International Centre for Diffraction...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003528
EISBN: 978-1-62708-180-1
... elastic constants of the material, variations of σ ij are the stress-tensor components, ϕ is the angle of the direction of strain measurement with respect to the frame of reference, ψ is the angle subtended by the bisector of the incident and diffracted beam, with the specimen normal, and ε ϕψ is the...
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
... a hand-operated regulating valve combined with a spring-loaded safety valve in the same housing. A rectangular late (which was not found after the mishap) had been affixed to the top end plate by means of soft solder; it probably carried the maker's name and other particulars. The circumstances...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001797
EISBN: 978-1-62708-241-9
.... : Stresses due to tangential and normal loads on an elastic solid with application to some contact problems . J. Appl. Mech. 20 , 157 – 166 ( 1953 ) 14. Keer L.M. , Bryant M.D. : A pitting model for rolling contact fatigue . ASM J. Lubr. Technol. 105 , 199–205 ( 1983 ) 10.1115...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001851
EISBN: 978-1-62708-241-9
... H f χ dA where {χ} is the curvature vector, and [ H f ] is the elasticity matrix due to the bending motion. [ 4 ] The mathematical model for a bearing is a massless spring-damper system ( Fig. 7 ). Its characteristics (stiffness and damping) in horizontal and vertical directions are...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001781
EISBN: 978-1-62708-241-9
..., the golfer’s hands reaccelerate causing the head to spring forward, pushing the ball forward with both the spring of the shaft and the force the golfer applies to the shaft. This once again reverses the load before the final reversal when the club decelerates to a full stop behind the golfer’s head...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001812
EISBN: 978-1-62708-180-1
... schematic representation of an actual condition, the structural material would also be represented by springs. The bolt would also be preloaded, but before application of the working load, the bolt encounters a slight increase in load because of the elasticity of the structural members. Actually, some of...