scholarly journals Discussion: “Results of a Fifteen-Year Program of Flexural Fatigue Testing of Gear Teeth” (Seabrook, John B., and Dudley, Darle W., 1964, ASME J. Eng. Ind., 86, pp. 221–237)

1964 ◽  
Vol 86 (3) ◽  
pp. 237-237
Author(s):  
G. Broersma
Keyword(s):  
Fatigue Testing ◽  
Flexural Fatigue ◽  
Gear Teeth

Results of a Fifteen-Year Program of Flexural Fatigue Testing of Gear Teeth

1964 ◽  
Vol 86 (3) ◽  
pp. 221-237 ◽  
Author(s):  
John B. Seabrook ◽  
Darle W. Dudley
Keyword(s):  
World War Ii ◽  
Fatigue Testing ◽  
Rocket Engines ◽  
World War ◽  
Drive Gear ◽  
Design Work ◽  
Flexural Fatigue ◽  
Gear Teeth ◽  
Gear Design ◽  
Laboratory Conditions

This is a report of a continuing program of testing gear teeth which had its inception in 1946. In the course of the program about 3000 gear teeth have been broken under controlled laboratory conditions. The results of tests have been incorporated into gear design work in many fields. Gears now in use by the U. S. Navy are designed for intensities of tooth loading about double that of World War II. In the aircraft field the typical propeller drive gear carries about twice the intensity of loading as in World War II. Gears of almost fantastic intensities of loading are in use in rocket engines.

Prototype of Compact Flexural Fatigue Testing Machine

2014 ◽  
Vol 554 ◽  
pp. 350-354
Author(s):  
Muhammad Azrie Husainy Mohd Jasri ◽  
Mohd Afendi ◽  
A.H.M. Fauzi
Keyword(s):  
Fatigue Failure ◽  
Electromagnetic Force ◽  
Fatigue Testing ◽  
Testing Machine ◽  
Working Environment ◽  
Motion Sensor ◽  
Flexural Fatigue ◽  
The Real ◽  
The Cost ◽  
Dynamic Fatigue

The purpose of this project is to build a prototype of compact flexural fatigue testing machine and to strive for an easy working-environment as required by the users besides cutting the cost of the machining. This particular project is about to build the prototype of compact flexural fatigue testing machine in compact mode. In this project, the prototype will be functioning 60% similar to the real fatigue machine which is Dynamic Fatigue Testing Machine (INSTRON) due to timer counter, frequency and load applied. But the new invention is this prototype was using the concept of electromagnetic force relay that will apply to the specimen using the application of basic electronics. The motion sensor also being applied to this prototype to achieve accurate results when the specimen breaks up after undergoes a fatigue failure.

scholarly journals Flexural Fatigue Behaviors of Silicon Carbide Recycled Concrete in Corrosive Environments

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Jinzhi Zhou ◽  
Tiantian Fu ◽  
Chuheng Zhong ◽  
Kun Peng ◽  
Ziyang Shuang
Keyword(s):  
Silicon Carbide ◽  
Fatigue Life ◽  
Failure Probability ◽  
Fatigue Testing ◽  
Testing Machine ◽  
Fatigue Tests ◽  
Recycled Concrete ◽  
Flexural Fatigue ◽  
Corrosive Environments ◽  
The Relationship

An experimental study on the flexural fatigue behaviors of recycled concrete (RC) and silicon carbide recycled concrete (SiCRC) was conducted. The immersion time was 0 d, 30 d, 60 d, and 90 d in 5% NaCl solution for these two kinds of recycled concrete specimens, respectively, and then, four-point flexural fatigue tests were performed by MTS fatigue testing machine. The fatigue life for varying stress levels ranging from 0.9 to 0.6 was obtained. The fatigue life was given considering the failure probability according to the fatigue life and stress level of the specimen via the logarithmic normal distribution and Weibull distribution, respectively. The relationship between fatigue life and failure probability was also obtained. The fatigue life with failure probability of 1% and 50% was further predicted. The results showed that the fatigue life of RC and SiCRC increased in corrosive environments. The fatigue life of SiCRC is higher than that of RC, and the incorporation of SiCRC can improve the fatigue life of recycled concrete.

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