When doing fracture toughness determinations on gray cast iron it is impossible to determine the length of the fatigue precrack from studies of the fracture surface. The reason for this is that the crack front is no well-defined line between ruptured and unruptured material but a zone of finite leng
A study of the fracture toughness of nodular cast iron
β Scribed by Xi-Juan Li; Guang-Ming Lin; Wen-Guang Zhen; Li-Yun Wang
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 89 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0013-7944
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β¦ Synopsis
Chinese abstract5
population mean with confidence level y (say, 90%). The acceptable percent error 6 is usually S%. It is obvious from the above-mentioned expression that if one wants to find the sample size n, he will have to follow a trial-and-error procedure.
By referring to some test data of K,, for the various materials. n may generally by taken as 4-6.
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