scholarly journals Development of Fatigue Testing Machine for Thin Sheet Specimen and Fatigue Test for Magnesium Single Crystal

2009 ◽  
Vol 58 (8) ◽  
pp. 703-708 ◽  
Author(s):  
Masayuki TSUSHIDA ◽  
Ryosuke IKEDA ◽  
Hiromoto KITAHARA ◽  
Shinji ANDO
Keyword(s):  
Single Crystal ◽  
Fatigue Test ◽  
Fatigue Testing ◽  
Thin Sheet ◽  
Testing Machine

scholarly journals Test Results of Wheel-Axle Fatigue Testing Machine : Report 1, Fatigue Test under Constant Load

1968 ◽  
Vol 34 (268) ◽  
pp. 2092-2102
Author(s):  
Hiroshi NAKAMURA ◽  
Shinichi TANAKA ◽  
Kozo HATSUNO ◽  
Shinji YAGUCHI ◽  
Bunpei MORI
Keyword(s):  
Fatigue Test ◽  
Fatigue Testing ◽  
Testing Machine ◽  
Constant Load ◽  
Test Results

Design of Threaded Fatigue Test Specimen for Machining

2013 ◽  
Vol 135 (4) ◽  
Author(s):  
Hamza K. Akyildiz ◽  
Haydar Livatyali
Keyword(s):  
Fatigue Test ◽  
Test Section ◽  
Test Specimen ◽  
Fatigue Testing ◽  
Complex Geometry ◽  
Testing Machine ◽  
High Strength ◽  
Critical Test ◽  
Fatigue Notch Factor ◽  
Center Section

Design and machining of the fatigue test specimens have significant effects on the duration and reliability of fatigue test. Fatigue test specimens essentially consist of three parts: the center or critical test section, which is the region where required conditions are simulated as closely as possible, and the two ends, which serve to transfer the load from the grips to the center section. When high strength materials are used for a complex geometry, such as a thread need to be tested, design and manufacturing of the specimens become more influential on the reliability and duration of the tests. Threaded fatigue test specimens were designed, machined, and tested in a four-point rotary bending fatigue testing machine. An innovative threaded fatigue test specimen that consistently fails at the critical test section was designed, machined, and tested successfully to give the required fatigue notch factor. Because of full scale fatigue testing with threaded parts is very expensive and sometimes dangerous, evaluated threaded fatigue specimen can be used in fatigue testing and it reduces duration of the experiment more than 60% for machined threaded specimens.

Fatigue Strength of Ion Nitrided Tool Steel

2006 ◽  
Vol 324-325 ◽  
pp. 475-478
Author(s):  
Mian Zhang ◽  
Shinichi Nishida ◽  
Nobusuke Hattori
Keyword(s):  
Fatigue Strength ◽  
Fatigue Test ◽  
Tool Steel ◽  
Surface Composition ◽  
Fatigue Testing ◽  
Testing Machine ◽  
Surface Hardness ◽  
Fatigue Properties ◽  
Ion Nitriding ◽  
Rotating Bending Fatigue

The authors have studied and clarified that ion nitriding was able to improve the fatigue properties of tool steel. Five kinds of ion nitriding methods (ion nitriding condition is different) were used in this study. The fatigue test had been performed using a rotating bending fatigue testing machine to investigate the effects of ion nitriding on fatigue properties of tool steel. The fractography was analyzed using a scanning electron microscope (SEM), and hardness distribution was also investigated using a microhardness tester. As a result, the fatigue strength and hardness of the ion nitrided specimen increased after ion nitriding processing. It is considered that the compressive residual stress which produced by ion nitriding processing in the layer reduced fatigue fracture, and the altered surface composition improved surface hardness. According to the results of the fatigue test, the optimal ion nitriding method on improving the fatigue limit of tool steel was determined. The hardness of the specimens remarkably increased after ion nitriding processing.

Analysis of Static Stress in an Alloy Wheel of the Passengercar

2015 ◽  
Vol 16 ◽  
pp. 17-25 ◽  
Author(s):  
S. Nallusamy ◽  
N. Manikanda Prabu ◽  
K. Balakannan ◽  
Gautam Majumdar
Keyword(s):  
Fatigue Life ◽  
Aluminium Alloy ◽  
Fatigue Test ◽  
Fatigue Testing ◽  
Testing Machine ◽  
Manufacturing Companies ◽  
Passenger Cars ◽  
Element Analysis ◽  
Static And Dynamic Analysis ◽  
Alloy Wheel

The vehicle may be towed without the engine but it is not possible without the wheels. Road wheel is a significant structural member of the vehicular suspension system that supports the static and dynamic loads encountered during vehicle operation. As in the case of an automobile wheel maximum load is applied on the alloy wheel. Proper analysis of the alloy wheel plays a significant role for the safety of the passenger cars. Alloy wheels which are intended for normal use on passenger cars, undergo three tests and have to pass before going into the production: Dynamic Cornering Fatigue Test, Dynamic Radial Fatigue Test and Impact Test. Most of aluminium alloy wheels manufacturing companies have done several testing of their product however information of their method on simulation test is often kept limited. During a part of research a static and fatigue analysis of aluminum alloy wheel A356.0 was carried out using FEA package. The 3-D model was imported from CATIA into ANSYS using the appropriate format. Finite element analysis (FEA) is carried out by simulating the test conditions to analyze stress distribution and fatigue life of the aluminium alloy wheel rim of passenger car. Experimental analyses are carried out by radial fatigue testing machine for evaluation of fatigue life under influence of camber angle. The test indicates that integrating FEA and nominal stress method is a good and efficient method to predict alloy wheels fatigue life. In this paper by observing the results of both static and dynamic analysis the aluminium alloy is suggested as better material.

scholarly journals On the fatigue test of fabrics (3) on the fatigue testing machine

1949 ◽  
Vol 5 (2) ◽  
pp. 74-78
Author(s):  
Hosaku Uchida ◽  
Akira Aoki
Keyword(s):  
Fatigue Test ◽  
Fatigue Testing ◽  
Testing Machine

scholarly journals A New Random Fatigue Testing Machine and Some Fatigue Test Results under Program Load

1968 ◽  
Vol 17 (173) ◽  
pp. 108-115
Author(s):  
Morio SEKI ◽  
Keizo FUJITANI ◽  
Tsuneshichi TANAKA ◽  
Hiromichi ISHII
Keyword(s):  
Fatigue Test ◽  
Fatigue Testing ◽  
Testing Machine ◽  
Test Results ◽  
Program Load ◽  
Random Fatigue
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