1994 Fiscal Year Final Research Report Summary
The strain Gage Methods for Determining of a Stress Intensity Factor of a Crack
| Project/Area Number |
05555036
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Tokyo National College of Technology |
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Principal Investigator |
KUROSAKI Shigeru Tokyo National College of Technology.Department of Mechanical Engineering.professor, 機械工学科, 教授 (70042710)
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| Co-Investigator(Kenkyū-buntansha) |
SHIMIZU Akihiro Tokyo National College of Technology.Dept.of Mech.Engn.associate professor, 機械工学科, 助教授 (90149914)
KOSAKA Tosihumi Tokyo National College of Technology.Department of Computer science, associate p, 情報工学科, 助教授 (60153524)
YOSIMURA Yasuo Tokyo National College of Technology.Department of Mechanical Engineering.profes, 機械工学科, 教授 (20042682)
FUKUDA Shuichi Tokyo Metropolitan Institute of Technology.professor, 管理工学科, 教授 (90107095)
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| Project Period (FY) |
1993 – 1994
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| Keywords | Stress Intensity Factor / Fracture Mechanics / Strain Gage / Experimental Stress Analysis / Nondestructive Inspection |
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| Research Abstract |
It is important for Engineering to determine stress intensity factor by using strain gages experimentally. The stress intensity factor is the parameter of a fracture mechanics.
This research developes the strain gage method for determining the stress intensity factor of crack.
The method to be developes in this researches consist of three methods as follows.
1. The first is the method to determine the opening-mode stress intensity factor K_1 with using extremely small sized strain gage consisting of 5 measuring grids.
2. The second is the method to determine the sharing-mode stress intensity factor K_<II>. This resrearch is made experimets of two types as follow.
(1) The tensile shear tests are carried with using compact shear specimens.
(2) The torsional tests are carried with using cylindrical shell with a crack.
3. The third is the separable method of mode II stress intensity factor in a mixed mode by using 0/90 deg. ring core rosette strain gages.
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