X射线法测定小曲率半径工件曲面的残余应力

• 作 者: 应广增
• 机 构: 兵器工业部六二研究所,
• 出 处: 理化检验.物理分册
• 发表日期: 1985年01期
• 关键词: 曲率半径 X射线法 应力测定 正角 残余应力 应力仪 衍射角 光阑 半宽度 平面应力

文献〔1〕提出了曲面应力测定的计算方法,给出一系列不同曲率半径曲面的应力计算数据,认为当光阑半宽度b与工件曲率半径R之比即b/R≤1/30击时,曲面可按平面处理,但当b/R≥1/5时,X射线正角入射应力测定便无法进行。鉴于应力仪只能采用正角入射法,本文应用相同的计算原理,采用固定ψ法,将b/R限制扩大到b/R≤1/3,且给出b/R=1/5～1/3的曲面应力测定的计算数据。

Literature [1] proposed a calculation method of surface stress measurement, given a series of different radius of curvature of the surface stress calculation data, that the aperture half width b and the workpiece radius of curvature R ratio b / R ≤ 1/30 hit , The surface can be processed plane, but when b / R ≥ 1/5, X-ray positive angle incident stress measurement can not be carried out. In view of the fact that the stress meter can only adopt the positive angle incidence method, the same calculation principle is applied in this paper. The fixed ψ method is used to extend the b / R limit to b / R≤1 / 3 and give b / R = 1/5 to 1 / 3 of the surface stress measurement calculation data.