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endurance and load testing

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c0046981
EISBN: 978-1-62708-218-1
...Abstract Abstract The exhaust valve of a truck engine failed after 488 h of a 1000 h laboratory endurance test. The valve was made of 21-2 valve steel in the solution treated and aged condition and was faced with Stellite 12 alloy. The failure occurred by fracture of the underhead portion...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001759
EISBN: 978-1-62708-241-9
... assembly. drive shaft bearing cup brittle fracture heat treatment carbon steel shallow case endurance and load testing fracture toughness SAE-AISI 1117 (11xx resulfurized steel) UNS G11170 Introduction Problem Statement Analysis of Problem Experimental Procedure Results...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001459
EISBN: 978-1-62708-234-1
... slowly. For instance, in some tests carried out under alternating direct stresses at the National Physical Laboratory the first crack was observed after 1.8 × 10 6 , cycles and complete failure did not occur until after a further 1.8 × 10 6 cycles although the load was maintained constant so...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001780
EISBN: 978-1-62708-241-9
... microstructures. For pearlitic rail steels tested in the longitudinal direction, the endurance limits were found to vary with the sulfur content as mentioned in Table 5 [ 20 ]. No definite trend could be assigned to sulfur content; however, the fatigue limits presented in Table 5 were found to correspond best...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001760
EISBN: 978-1-62708-241-9
...Abstract Abstract This article presents a failure analysis of an aluminum cylinder head on an automotive engine. During an endurance test, a crack initiated from the interior wall of a hole in the center of the cylinder head, then propagated through the entire thickness of the component...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003516
EISBN: 978-1-62708-180-1
... 10.1115/1.3640649 18. Reiman J.A. , Landy M.A. , and Kaplan M.P. , Effect of Spectrum Type on Fatigue Crack Growth Life , Fatigue Crack Growth under Spectrum Loads , STP 595, American Society for Testing and Materials , 1976 , p 187 – 202 19. Aircraft Structural Integrity...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001430
EISBN: 978-1-62708-236-5
... — of the order of 10% — in the fatigue endurance of test samples, the improvement being greater the better the quality of the weld. 1 Fatigue strength of deposited metal. In many cases the weld metal will be of a lower tensile strength than the shaft and, partly for this reason, has a lower fatigue...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001300
EISBN: 978-1-62708-215-0
... be inspected carefully for signs of cracking or misalignment. Ultrasonic testing is recommended for detection of subsurface cracks, while magnetic particle testing will detect surface cracking. Visual inspection can be used to determine the teeth contact pattern. Alignment Pulverizers Rolling contact...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001794
EISBN: 978-1-62708-241-9
... their presence, but also their appropriate values are extremely important for the fatigue life of shafts. It was equally suggested to improve the mechanical properties of the shaft to achieve higher endurance limit, i.e., close to 40 HRC rather than to 30 HRC. Several tests and analysis were conducted...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001042
EISBN: 978-1-62708-214-3
...-stress fatigue failure. Because the region of final, fast fracture was extremely small, it was deduced that the overload was probably slightly higher than that required to cause fracture. In this case, the loading would be slightly higher than the endurance limit of the type 304 stainless steel. Because...
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
... 80. Glinka G. , Calculation of Inelastic Notch Tip Stress-Strain Histories under Cyclic Loading , Eng. Fract. Mech ., Vol 2 (No. 5 ), 1986 , p 839 – 854 10.1016/0013-7944(85)90112-2 81. Basquin O.H. , The Exponential Law of Endurance Tests , Proc. Am. Soc. Test. Mater...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001680
EISBN: 978-1-62708-221-1
.... Microhardness testing was performed on a Wilson Tukon MO at 100 grams with a 15 second dwell time. Due to the light loads used, a Knoop indentor was chosen over diamond pyramid hardness because of the longer length of the diagonal, and the increased sensitivity to surface effects.[ 9 ] Calibrated indentations...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001288
EISBN: 978-1-62708-215-0
...Abstract Abstract The side supporting flange of the bottom platen of an 800 ton hydraulic press fractured after 9 x 10's cycles under a maximum load of 530 tons. The platen material specified in the design was cast steel 52. Metallographic examination of the fracture surface indicated...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001792
EISBN: 978-1-62708-241-9
... that rotational bending stresses caused the gear shaft to fail due to insufficient fatigue strength. This led to the torsional failure of the corroded clutch shaft, which was subjected to a sudden, high level load when the shaft connecting the gearbox to the propeller failed. power transmission shafts...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006829
EISBN: 978-1-62708-295-2
... of fretting cycles by shot peening. Adapted from Ref 93 . (b) Evolution of fretting fatigue endurance (cracking failure) as a function of fatigue stress for constant partial slip fretting loading ( P = Cst, Q * = Cst). Comparison between surface treatments (shot peening, or SP) and coatings. Source: Ref...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001617
EISBN: 978-1-62708-227-3
... material showed that impurity levels were low, as mentioned previously, and thus, it was not really surprising that no sustained-load cracking occurred. Fatigue tests on specimens cut from the NAB bar stock, with microstructures similar to those observed in some failed couplings, were also carried out...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001763
EISBN: 978-1-62708-241-9
... law of endurance tests . Am. Soc. Test Mater. Proc. 625 – 630 ( 1910 ). 13. Hertzberg R.W. : Deformation and fracture mechanics of engineering materials . John Wiley & Sons , New York , 530 – 532 ( 1996 ). 14. Matlock D.K. , Alogab K.A. , Richards M.D...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001119
EISBN: 978-1-62708-214-3
... to be within approximately 63% of the endurance limit. Experimental A sample of one of the failed springs was analyzed by X-ray diffraction to test for the presence of residual tensile stress in the spring coil ID. Six measurements were made at the ID near the midsection partial crack, and two...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001485
EISBN: 978-1-62708-225-9
...% of these will endure before failure becomes evident. The load capacity of a bearing is governed by its dimensions, the properties of the material, and the number of rolling elements. The latter factor also controls the magnitude and the rate of repetition of the stresses which arise in the races. For instance...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006824
EISBN: 978-1-62708-329-4
..., and steam turbine, there is commonality in the primary cause of severe cyclic loading of these components. While rotating airfoils are subject to periodic impulses, such as wakes from upstream stationary airfoils, the magnitude of such aerodynamic loads is typically well below the fatigue endurance...