On a New Rotating Bending Fatigue Testing Machine

1966 ◽  
Vol 15 (148) ◽  
pp. 49-54
Author(s):  
Minoru KAWAMOTO ◽  
Katsumi SUMIHIRO ◽  
Koji KIDA
Keyword(s):  
Fatigue Testing ◽  
Testing Machine ◽  
Bending Fatigue ◽  
Rotating Bending Fatigue ◽  
Rotating Bending

scholarly journals A Newly Devised Resonance Type Rotating Bending Fatigue Testing Machine and Some Fatigue Tests

1971 ◽  
Vol 14 (76) ◽  
pp. 1013-1020
Author(s):  
Minoru KAWAMOTO ◽  
Yukihiko IBUKI ◽  
Toshinobu SHIBATA ◽  
Hiroshi ISHIKAWA
Keyword(s):  
Fatigue Testing ◽  
Testing Machine ◽  
Fatigue Tests ◽  
Bending Fatigue ◽  
Rotating Bending Fatigue ◽  
Rotating Bending

scholarly journals Design and fabrication of dual specimen rotating bending fatigue testing machine

IARJSET ◽  
2015 ◽  
pp. 25-27 ◽  
Author(s):  
Shreyas P ◽  
Trishul M.A ◽  
Chethan Kumar R ◽  
Karthik Babu K.R
Keyword(s):  
Fatigue Testing ◽  
Testing Machine ◽  
Bending Fatigue ◽  
Rotating Bending Fatigue ◽  
Rotating Bending

Improvement of Fatigue Behaviour of High Strength Aluminium Alloys by Fluidized Bed Peening (FBP)

2007 ◽  
Vol 344 ◽  
pp. 87-96 ◽  
Author(s):  
M. Barletta ◽  
F. Lambiase ◽  
Vincenzo Tagliaferri
Keyword(s):  
Fatigue Life ◽  
Fluidized Bed ◽  
Fatigue Testing ◽  
Fatigue Behavior ◽  
Maximum Amplitude ◽  
High Strength ◽  
Operational Parameters ◽  
Bending Fatigue ◽  
Rotating Bending Fatigue ◽  
Rotating Bending

This paper deals with a definition of a relatively novel technique to improve the fatigue behavior of high strength aluminum alloys, namely, Fluidized Bed Peening (FBP). Fatigue samples made from AA 6082 T6 alloy were chosen according to ASTM regulation about rotating bending fatigue test and, subsequently, treated by varying FBP operational parameters and fatigue testing conditions. First, a full factorial experimental plan was performed to assess the trend of number of cycles to rupture of fatigue samples varying among several experimental levels the factors peening time and maximum amplitude of alternating stress applied to fatigue samples during rotating bending fatigue tests. Second, design of experiment (DOE) technique was used to analyze the influence of FBP operational parameters on fatigue life of AA 6082 T6 alloy. Finally, ruptures of FB treated samples and untreated samples were discussed in order to evaluate the influence of operational parameters on the effectiveness of FBP process and to understand the leading process mechanisms. At any rate, the fatigue behavior of processed components was found to be significantly improved, thereby proving the suitability of FBP process as alternative mechanical technique to enhance fatigue life of components made from high strength aluminum alloy.

scholarly journals Continuous Estimation of the Crack Growth Rate during Rotating‒Bending Fatigue Testing

Metals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 275 ◽  
Author(s):  
Gabriela Martinez-Cazares ◽  
Rafael Mercado-Solis ◽  
Yaneth Bedolla-Gil ◽  
Diego Lozano
Keyword(s):  
Growth Rate ◽  
Crack Growth Rate ◽  
Crack Growth ◽  
Fatigue Testing ◽  
Crack Nucleation ◽  
Bending Fatigue ◽  
Initial Load ◽  
Rotating Bending Fatigue ◽  
Rotating Bending ◽  
Continuous Estimation

A method for estimating the crack growth rate in steel during rotating‒bending fatigue testing is presented. Constant deflection tests were conducted in which the initial load remained constant prior to crack nucleation, when it decreased as the crack grew. In the proposed approach, steel samples were sharp-notched to produce a characteristic circular fracture upon loading and the final fracture area was correlated with a ratio of the load prior to fracture and the initial load. In this method, the deflection imposed is a function of a material’s elastic modulus rather than its yield strength and the correlation obtained to estimate the average crack length as a function of the instantaneous load is independent of the applied stress or steel grade.

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