| Related citation: | Chao Zeng,Chunqing Wang,Yanhong Tian,Chunjin Hang,Wei Liu,Rong An.Fracture Statistics Dominated by Hot-Cutting Defect and Deviation from Weibull Distribution[J].Journal of Harbin Institute Of Technology(New Series),2015,22(2):41-48.DOI:10.11916/j.issn.1005-9113.2015.02.006. |
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| Author Name | Affiliation | | Chao Zeng | State Key Lab of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China | | Chunqing Wang | State Key Lab of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China | | Yanhong Tian | State Key Lab of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China | | Chunjin Hang | State Key Lab of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China | | Wei Liu | State Key Lab of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China | | Rong An | State Key Lab of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: |
| This paper characterizes the rarely noticeable hot-cutting defect and statistically models the fracture governed by this new type defect. The morphology of the defect on fired ceramic is examined and quantitatively featured through comparing the fracture strength governed by intrinsic defect and hot-cutting defect. Weibull distribution is utilized to fit the observed strength data and chi-square goodness-of-fit test is conducted to analyze the deviation. Kernel density estimation is introduced to explore the underlying strength distribution dominated by hot-cutting defect. Based on the shape information from kernel density estimating, gamma and lognormal distribution are compared and the hot-cutting defect governing fracture statistics is finally confirmed by chi-square test. Results show that the newly-defined hot-cutting defect is more dangerous than the intrinsic defect and the priori Weibull distribution fails to describe the fracture statistic governed by the edge defect while the lognormal with a slightly right skewed shape fits it very well. |
| Key words: hot-cutting defect deviation from Weibull Kernel density estimation lognormal distribution |
| DOI：10.11916/j.issn.1005-9113.2015.02.006 |
| Clc Number:TB321 |
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