| FATIGUE CRACK CLOSURE MEASUREMENT OF 2024-T3 SHEET SPECIMEN |
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| 作者姓名： | Wu Yisheng |
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| 作者单位： | Wu Yisheng(Instilute of Mechanics，Chinese Academy of Sciences，Beij ing，China，100080)J. Schijve(Faculty of Aerospace Engineering，Delf t University of Technology，Netheriands) |
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| 摘 要： | ＦＡＴＩＧＵＥＣＲＡＣＫＣＬＯＳＵＲＥＭＥＡＳＵＲＥＭＥＮＴＯＦ２０２４－Ｔ３ＳＨＥＥＴＳＰＥＣＩＭＥＮＷｕＹｉｓｈｅｎｇ（ＩｎｓｔｉｌｕｔｅｏｆＭｅｃｈａｎｉｃｓ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅｎｃｅｓ，Ｂｅｉｊｉｎｇ，Ｃｈｉｎａ，１００...
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FATIGUE CRACK CLOSURE MEASUREMENT OF 2024-T3 SHEET SPECIMEN |
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| Wu Yisheng.FATIGUE CRACK CLOSURE MEASUREMENT OF 2024-T3 SHEET SPECIMEN[J].Chinese Journal of Aeronautics,1994(3). |
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| Authors: | Wu Yisheng |
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| Abstract: | computer controled procedure is developed for automatic measurementsof the crack opening stress Sop dunng fatigue tests. A crack opening displacement gauge(COD meter) is used to obtain digital data on the load-COD curves. Three methods forderiving S op from the data sets are compared:(1) slope method, (2) tangent lines inter-secting method, and (3) tangent point method. The effect of the position of the CODmeter with respect to the crack tip on Sop is studied in tests of 2024-T3 specimens. Re-sults of crack growth and Sop are presented for CA loading with an overload and withan overload followed by an underload. |
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| Keywords: | fatigue crack closure stress analysis |
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