scholarly journals Evaluation of Bending Fatigue Testing of Austempered Ductile Iron Spur Gears

2020 ◽  
Vol 19 (12) ◽  
pp. 1-7
Author(s):  
Jian Hua Lv ◽  
◽  
Rui Zhou ◽  
Yang Xu ◽  
Zhen Qin ◽  
...  
Keyword(s):  
Ductile Iron ◽  
Fatigue Testing ◽  
Austempered Ductile Iron ◽  
Spur Gears ◽  
Bending Fatigue

The Evaluation of Bending Fatigue Testing of Austempered Ductile Iron Spur Gear

2019 ◽  
Author(s):  
Qi Zhang ◽  
Jianhua Lv ◽  
Rizwanulhaque Syed ◽  
Jing Zhang ◽  
Yang Xu ◽  
...  
Keyword(s):  
Fatigue Strength ◽  
Ductile Iron ◽  
Fatigue Testing ◽  
Spur Gear ◽  
Austempered Ductile Iron ◽  
Spur Gears ◽  
Reliability Design ◽  
Bending Fatigue ◽  
Bending Fatigue Strength ◽  
Number Of Cycles

Abstract An experimental evaluation of bending fatigue strength for austempered ductile iron (ADI) spur gears have been performed using Zwick fatigue tester. The gear material was manufactured by vertically continuous casting, in which the radius of the graphite grains is smaller. The Stress-Number of Cycles curve (S-N curve) for the bending fatigue strength of the ADI spur gears are manufactured without any specific surface treatments, and have been obtained by post-processing software. It was observed that when the reliability was 50%, the fatigue limit was 304.89 MPa. It has provided a reliable basis to rate the reliability design of the small gearboxes in automation later.

scholarly journals Bending Fatigue Strength of Austempered Ductile Iron Spur Gears

2009 ◽  
Vol 3 (3) ◽  
pp. 203-211 ◽  
Author(s):  
Masashi YAMANAKA ◽  
Ryo TAMURA ◽  
Katsumi INOUE ◽  
Yukihito NARITA
Keyword(s):  
Fatigue Strength ◽  
Ductile Iron ◽  
Austempered Ductile Iron ◽  
Spur Gears ◽  
Bending Fatigue ◽  
Bending Fatigue Strength

Contact and bending fatigue behaviour of austempered ductile iron gears

2017 ◽  
Vol 232 (6) ◽  
pp. 998-1008 ◽  
Author(s):  
Carlo Gorla ◽  
Edoardo Conrado ◽  
Francesco Rosa ◽  
Franco Concli
Keyword(s):  
Ductile Iron ◽  
Contact Fatigue ◽  
Research Programme ◽  
Fatigue Behaviour ◽  
Fatigue Tests ◽  
Austempered Ductile Iron ◽  
Fatigue Properties ◽  
Bending Fatigue ◽  
Metallurgical Analysis ◽  
Single Tooth

In the present paper a research programme aimed at investigating both the bending and contact fatigue properties of an austempered ductile iron applied to gears is presented, in order to determine reliable values of the limits, which take into account the influence of the production process, to be applied in the design of gearboxes. The bending fatigue tests are performed according to the single tooth fatigue approach and the pitting tests are performed with a back-to-back rig. Metallurgical analysis is performed on the failed specimens, in order to understand the origin and the propagation of the failures and to appreciate the influence of the micro-structure on the performances obtained.

Comparative bending fatigue strength of precision forged spur gears

1997 ◽  
Vol 211 (4) ◽  
pp. 293-299 ◽  
Author(s):  
O Eyercioglu ◽  
D Walton ◽  
T A Dean
Keyword(s):  
Fatigue Strength ◽  
Fatigue Testing ◽  
Testing Machine ◽  
Fatigue Tests ◽  
Spur Gears ◽  
Test Fixture ◽  
Bending Fatigue ◽  
Gear Teeth ◽  
Root Area ◽  
Bending Fatigue Strength

To determine the bending fatigue strength of precision forged spur gears and to compare the results with those obtained from conventional cut gears, single tooth bending fatigue tests were carried out on both through-hardened and induction-hardened gear teeth. The gears were produced from rolled bar cut blanks, disc forged blanks or precision forged teeth blanks. For this purpose, a special test fixture was designed and built for an Amsler high-frequency vibrophore fatigue testing machine. The results show that the endurance limit of precision forged gears is significantly higher than those obtained from cut gears. The bending fatigue strength of forged gears was some 12.5 per cent higher than the cut teeth in a through-hardened condition and 8.4 per cent higher for the induction-hardened teeth. The effect of surface roughness at the tooth root area on the bending fatigue strength of the forged gears is also shown.

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

Production of austempered ductile iron gears for transmission cases

2005 ◽  
Vol 47 (9) ◽  
pp. 523-528 ◽  
Author(s):  
Ahmet Sagin ◽  
Ahmet Topuz
Keyword(s):  
Ductile Iron ◽  
Austempered Ductile Iron
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