| 用改进的盲孔法测试复合钢板复板的残余应力 |
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| 引用本文： | 李栋才,李霄.用改进的盲孔法测试复合钢板复板的残余应力[J].石油机械,2003,31(2):37-39. |
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| 作者姓名： | 李栋才 李霄 |
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| 作者单位： | 西安石油学院机电与材料工程学院 |
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| 基金项目： | 陕西省自然科学基金项目 (94c16) |
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| 摘 要： | 为了研究复合钢板复板中残余应力的大小和分布状况 ,采用改进的盲孔法 ,即在测点打孔后多次扩孔 ,利用相似标定实验所得多组应变释放系数计算残余应力 ,可得不同深度残余应力的估算值。实测结果与定性分析结果吻合。测试结果还表明 ,复合钢板复层内存在残余应力 ,且以拉 拉和拉 压应力状态为主 ,应力沿厚度方向非均匀分布 ,随深度增加应力增大 ,最大应力位于结合面附近 ,应力值超过 10 0MPa。
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| 关 键 词： | 残余应力 盲孔法 测试 复合钢板 双相不锈钢 |
| 修稿时间： | 2002年5月5日 |
Measurement of residusl stress in clad laytr of steel clad plate with improved blind-hole drilling method |
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| Li Dongcai.Measurement of residusl stress in clad laytr of steel clad plate with improved blind-hole drilling method[J].China Petroleum Machinery,2003,31(2):37-39. |
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| Authors: | Li Dongcai |
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| Abstract: | Improvement to the conventional blind-hole drilling method has been done to measure residual stress in clad layer of steel clad plate welded with explosive. The improvement was the following: repeating(2～3) times reaming and measuring after the first drilling at the given position, then calculating the residual stress with the measuring results and strain-relaxation coefficients of corresponding calibration test. As results of this process the residual stress distribution along the depth was obtained. From the testing result with two-phase stainless steel 00Cr18Ni5Mo3Si2 as clad layer of a steel clad plate, it has been shown satisfactory coincidence with the quatitative analysis and measuring results of Ni-Cr steel clad by other researcher. |
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| Keywords: | residual stress blind-hole drilling method test steel clad plate two-phase stainless steel |
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