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题名: Measurement of internal residual stress of the laser rapid forming parts by incremental-step hole drilling method
作者: Lai YB(来佑彬) ; Liu WJ(刘伟军) ; Zhao YH(赵宇辉) ; Wang FY(王福雨) ; Han WC(韩文超)
作者部门: 装备制造技术研究室
会议名称: 2013 2nd International Conference on Machine Design and Manufacturing Engineering, ICMDME 2013
会议日期: May 1-2, 2013
会议地点: Jeju Island, Korea, Republic of
会议主办者: Trans Tech Publications
会议录: Applied Mechanics and Materials
会议录出版者: Trans Tech Publications Ltd,
会议录出版地: Zurich-Durnten, Switzerland
出版日期: 2013
页码: 1011-1016
收录类别: CPCI(ISTP) ; EI
ISSN号: 1660-9336
ISBN号: 9783037857816
关键词: Calibration ; Industrial engineering ; Machine design ; Stress concentration ; Stress measurement
摘要: In order to study the residual stress distribution in the titanium alloy laser rapid forming parts, the incremental-step hole drilling method is improved. Choose a calibration sample which has the same material as the test sample to conduct internal residual stress measurement by incremental-step hole drilling method. Conduct stress-release heat treatment (insulation 4 hours in 750 centigrade, furnace cooling) to the calibration sample before the measurement to uniform the internal stress. Calculate calibration compensation coefficient according to the calibration sample stress measurement result, and use the compensation coefficient to compensate the stress measurement result of the laser rapid forming sample. This method improves the reliability of internal residual stress measurement by incremental-step hole drilling method. Then use this method to measure the stress of laser rapid forming sample. The result shows that both the residual stress in the X direction and the Y direction is larger when the depth ranges from 1 mm to 3 mm. When the depth is greater than 3 mm, the residual stress decreases gradually with the hole depth increasing. The maximum value in the X direction is 147.13 MPa, and the maximum value in the Y direction is 236.32 MPa. © (2013) Trans Tech Pudlications, Switzerland.
产权排序: 1
内容类型: 会议论文
URI标识: http://ir.sia.cn/handle/173321/13830
Appears in Collections:装备制造技术研究室_会议论文

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