Experimental Support for Generalized Equation Predicting Low Cycle Fatigue

Tavernelli, J. F.; Coffin, L. F.

doi:10.1115/1.3658701

Cited by 143 publications

(25 citation statements)

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“…Manson-Coffi n relationship (Tavernelli and Coffi n Jr., 1962;Manson, 1962) as defi ned by Eq. (3) was used for regression of the experimental data from fatigue tests with mean strains of zero (R=−1).…”

Section: Low-cycle Fatigue Testsmentioning

confidence: 99%

Mechanical and low-cycle fatigue behavior of stainless reinforcing steel for earthquake engineering applications

Zhou

Lee

et al. 2010

Earthq. Eng. Eng. Vib.

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Use of stainless reinforcing steel (SRS) in reinforced concrete (RC) structures is a promising solution to corrosion issues. However, for SRS to be used in seismic applications, several mechanical properties need to be investigated. These include specifi ed and actual yield strengths, tensile strengths, uniform elongations and low-cycle fatigue behavior. Three types of SRSs (Talley S24100, Talley 316LN and Talley 2205) were tested and the results are reported in this paper. They were compared with the properties of A706 carbon reinforcing steel (RS), which is typical for seismic applications, and MMFX II, which is a high strength, corrosion resistant RS. Low-cycle fatigue tests of the RS coupons were conducted under strain control with constant amplitude to obtain strain life models of the steels. Test results show that the SRSs have slightly lower moduli of elasticity, higher uniform elongations before necking, and better low-cycle fatigue performance than A706 and MMFX II. All fi ve types of RSs tested satisfy the requirements of the ACI 318 code on the lower limit of the tensile to yield strength ratio. Except Talley 2205, the other four types of RSs investigated meet the ACI 318 requirement that the actual yield strength does not exceed the specifi ed yield strength by more than 18 ksi (124 MPa). Among the three types of SRSs tested, Talley S24100 possesses the highest uniform elongation before necking, and the best low-cycle fatigue performance.

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Section: Low-cycle Fatigue Testsmentioning

confidence: 99%

Mechanical and low-cycle fatigue behavior of stainless reinforcing steel for earthquake engineering applications

Zhou

Lee

et al. 2010

Earthq. Eng. Eng. Vib.

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“…Therefore, for a long time, in order to prevent the components from fatigue breaking, people have been continuously exploring and trying to describe the whole process of fatigue from the viewpoint of some 'controllable factors', so as to achieve the goal of forecasting the fatigue life and avoiding the fracture phenomena. Starting from the famous relational expression for estimating fatigue life Manson-Coffin Formula [1] presented by Manson and Coffin in early 1960s' and subsequent appearance of Pairs's Formula [2] of fatigue spreading rate, many scholars have began the fatigue safety design and research on forecasting fatigue life. Among them, the Neuber's equation [3] and Dowling's formula [4] are the representative achievements.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Fracture Design for Medium Carbon Steel under Extra-Low Cyclic Fatigue in Axial Loading

Tan

Duan

2008

Acta Mech. Solida Sin.

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The extra-low cyclic fracture problem of medium carbon steel under axial fatigue loading was investigated. Several problems, such as the relations of the cycle times to the depth and tip radius of the notch, loading frequency, loading range and the parameters of fracture design for medium carbon steel on condition of extra-low axial fatigue loading were discussed based on the experiments. Experimental results indicated that the tension-pressure fatigue loading mode was suitable for extra-low cyclic fatigue fracture design of medium carbon steel and it resulted in low energy consumption, fracture surface with high quality, low cycle times, and high efficiency. The appropriate parameters were as follows: loading frequency 3-5 Hz, notch tip radius r = (0.2-0.3) mm, opening angle α = 60 • , and notch depth t = (0.14-0.17)D.

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“…The method of computation again depends predomifi&mtly on t h e use of equat i o n s (5) and (6), or t h e i r W e s h a l l i l l u s t r a t e t h e approach by r e f e r r i n g again t o t h e AISI 52100 s t e e l tempered a t 600° F f o r which t h e value of A n i l l u s t r a t i v e computation i s presented i n appendix C; here we s h a l l i n -…”

Section: T I O N a T T H E Notch R O O T Causes T H E Crack T O Develmentioning

confidence: 99%

“…Further data are needed t o j u s t i f y i t s use f o r Equation (6), or i t s (5) and (6). in equation (5) it is necessary to examine separately the Case I:…”

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confidence: 99%

Interfaces between fatigue, creep, and fracture

Manson

1966

Int J Fract

159

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* r a t h e r small specimens. The specimens u s u a l l y had c a r e f u l l y machined surfaces, and i n most cases were t e s t e d i n a i r i n t h e absence of pernicious environments. 3I n i n t e r p r e t i n g t h e r e s u l t s of our low-cycle f a t i g u e t e s t s , it i s common t o regard c y c l i c l i f e a s being governed l a r g e l y by t h e s t r a i n range t o which t h e t e s t s e c t i o n i s subjected. Figure 3 i l l u s t r a t e s t h e concept we have applied t o t h e p l o t of t o t a l s t r a i n range against t h e number of cycles t o f a i l u r e . Failure i s defined here as separation of t h e specimen i n t o two p a r t s .been separated i n t o i t s two components, p l a s t i c and e l a s t i c . It i s evident from t h e f i g u r e t h a t on a log-log p l o t of s t r a i n versus number of cycles t o f a i l u r e , both t h e e l a s t i c and t h e p l a s t i c components a r e assumed t o be represented by s t r a i g h t l i n e s . The l i n e a r i t y of a logarithmic p l o t of p l a st i c s t r a i n range versus l i f e has been w e l l accepted i n the l i t e r a t u r e on f a t i g u e i n recent years. W e f i r s t proposed t h i s l i n e a r i t y i n 1952 ( r e f . 3) i n connection with t h e thermal fatigue of turbine buckets. The concept w a s a l s o proposed independently by Coffin ( r e f . 4 ) and much research information has been compiled by numerous authors t o v e r i f y that such a l i n e a r r e l a t i o ns h i p e x i s t s between p l a s t i c s t r a i n and l i f e . The -0.6 slope shown i n f i gure 3 f o r t h e p l a s t i c l i n e i s a reasonable average r e p r e s e n t a t i o n of most of t h e m a t e r i a l s we have t e s t e d . It is common t o assume t h a t t h e p l a s t i c l i n e has a u n i v e r s a l slope of -0.5. However, t h e r e i s r e p l l y no b a s i c eonf l i c t w i t h t h e -0.6 slope shown i n figure 3 since i n most cases where -0.5 has been proposed t h e l i f e has been t h a t required t o generate a crack r a t h e r t h a n t h a t required t o separate the specimen i n t o two p a r t s . I n reference 1 we have attempted t o demonstrate t h a t t h e d i f f e r e n c e i n slopes i s d i r e c t l y a t t r i b u t a b l e t o t h e difference i n d e f i n i t i o n of f a t i g u e l i f e . The total. s t r a i n range which i s given by t h e curved l i n e has It i s evident from figure 3 t h a t t h e e l a s t i c l i n e i s also assumed t o 4 be s t r a i g h t . slope i n t h i s case i s on t h e order of -0.12.A s implied i n t h e f i g u r e , b o t h the p l a s t i c and t h e e l a s t i c components can be estimated from measurements of p r o p e r t i e s obtained i n a simple t e n s i l e t e s t . Thus from a knowledge of t h e d u c t i l i t y of t h e material, it i s possible t o determine one point on t h e p l a s t i c l i n e , and from the u l t i m a t e t e n s i l e s t r e n g t h and elast i c modulus one point on t h e e l a...

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Experimental Support for Generalized Equation Predicting Low Cycle Fatigue

Cited by 143 publications

References 0 publications

Mechanical and low-cycle fatigue behavior of stainless reinforcing steel for earthquake engineering applications

Mechanical and low-cycle fatigue behavior of stainless reinforcing steel for earthquake engineering applications

Investigation of Fracture Design for Medium Carbon Steel under Extra-Low Cyclic Fatigue in Axial Loading

Interfaces between fatigue, creep, and fracture

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