Method of measurement and determination on fracture toughness of structural materials at high temperature
Disclosed is a method of measurement and determination on fracture toughness of structural materials at high temperature, comprising: preliminary assessing the ductility of a material based on a high-temperature uniaxial tensile test and the fracture characteristic; designing and manufacturing a CT...
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| creator | Huang Yuhui Wang Haitao Liu Xia Xuan Fuzhen Wang Qiongqi Mei Linbo |
| description | Disclosed is a method of measurement and determination on fracture toughness of structural materials at high temperature, comprising: preliminary assessing the ductility of a material based on a high-temperature uniaxial tensile test and the fracture characteristic; designing and manufacturing a CT specimen; conducting a monotonic loading fracture test on the CT specimen at high temperature; modifying a load-displacement curve output by a testing machine; determining a passivation coefficient M for the crack of the structural material; reversely recursing instant load-displacement data pairs corresponding to the instant crack length; calculating a J_R crack extension resistance curve of the tensile test; examining the validity of the J_R crack extension resistance curve and the fracture toughness JIC; calculating the fracture toughness per equivalent of the structural material KIC. The present invention overcomes the difficulty of placing an extensometer inside a high-temperature furnace. |
| format | Patent |
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| subjects | INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING |
| title | Method of measurement and determination on fracture toughness of structural materials at high temperature |
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