Rotating Bending Fatigue Testing Machine [Japan]
YAMAMOTO METAL TECHNOS CO., LTD.
Japanese
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Contents
1.What is Metal Fatigue?
2.Does Metal Fatigue often happen?
3.What we learn from the big accidents in the past
4.Recent trend “Giga-cycle fatigue”
5.How is fatigue testing operated?
6.What is S-N curve?
7.How to utilize S-N curve?
8.What happens in the longer life regime?



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GIGA QUAD

3.What we learn from the big accidents in the past

Talk about Dual Rotating Bending Fatigue Testing Machine -Contents-
  1.What is Metal Fatigue?
  2.Does Metal Fatigue often happen?
  3.What we learn from the big accidents in the past
  4.Recent trend “Giga-cycle fatigue”
  5.How is fatigue testing operated?
  6.What is S-N curve?
  7.How to utilize S-N curve?
  8.What happens in the longer life regime?
Serious accidents caused by metal fatigue have happened to familiar things such as a plane,train,bridge and roller coaster in the past.
Here are some examples shown below.

■1954年
 The world's first English plane COMETwas broken up in midair because of fatigue destruction at the corner of the plane window.
■1994年
 Seongsu Bridge in Korea collapsed suddenly, which was because fatigue fracture proceeded rapidly due to welding deficiency and traffic increase.
■1998年
 the German high speed train ICE was derailed due to fatigue fracture of vibration-proof tire.
■2007年
 A roller coaster of an amusement park in Osaka Japan was derailed due to fatigue fracture of an axle.

An research of metal fatigue has being developed so that such kind of accidents shound never happen.

Then, what do you think is needed to prevent those accidents above?
It is reliable and safety design.
And, what is needed to have such design is FATIGUE STRENGTH !!
And more , it is the best way to use a Fatigue Testing Machine to find out fatigue strength.

Isn't it high time to see once again if Fatigue Strength data which is a basis of safety design is certain enough or not?
Talk about Dual Rotating Bending Fatigue Testing Machine -Contents-
  1.What is Metal Fatigue?
  2.Does Metal Fatigue often happen?
  3.What we learn from the big accidents in the past
  4.Recent trend “Giga-cycle fatigue”
  5.How is fatigue testing operated?
  6.What is S-N curve?
  7.How to utilize S-N curve?
  8.What happens in the longer life regime?
GIGA  QUAD series Dual-spindle rotating bending fatigue  testing machine
>> Contents



YAMAMOTO METAL TECHNOS CO., LTD.
Rotating Bending Fatigue Testing Machine [Japan]

4-7, Setoguchi 2-chome, Hirano-ku, 547-0034 Osaka Japan
TEL: 81-6-6704-1800 E-mail: info@yama-kin.co.jp


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