针对某航空发动机低压涡轮工作叶片建立了全尺寸有限元模型。根据台架试验及实际工作承载条件,综合考虑叶片工作时所承受的离心负荷与气流力，进行了弹塑性有限元分析；研究了箍带与叶身小孔的配合间隙对结构应力场分布的影响，发现叶片结构强度的薄弱之处为榫头第一喉部、叶身小孔及叶背一侧圆根处。以此为依据,对叶片进行了高温低循环疲劳寿命预测。计算结果表明：叶身小孔与箍带的最大配合间隙对结构静强度及寿命影响较大，寿命计算时应当考虑平均间隙量的影响；随着计算温度的提高，寿命计算结果大幅度下降。

General failure event data from various sources are often used to estimate the failure probability for the system of interest, especially when s-dependence exists among component failures, where common cause failure plays an important role. Failure event data from different sources must be reasonably explained, and correctly applied, so that the information about load environment, and component/system property can be used correctly. In estimating the probability for s-dependent system failure, both the load distribution, and component strength distribution are much more important than component failure probability index.

从可靠性数学的角度，以环境载荷与零件性能的特征及其相互关系为背景，探讨了k/n（F）冗余系统共因失效的原因与机理，并致力于冗余系统共因失效概率预测的精确方法。分析表明，对于各零件处于同一载荷环境的系统，环境载荷的随机性是导致系统共因失效的最基本的原因。在一般情况下，环境载荷和零件性能都是随机变量，因而各类冗余系统都不同程度地存在共因失效这种失效相关性。通过机理分析，原则上可以说任何冗余系统失效概率（无论有无共因失效存在）都可以采用由环境载荷-零件性能干涉分析建立的具有普适性的模型进行预测。

Metal strain gauges need to be designed differently from strain gauges made from silicon. In this paper equations are derived that allow us to calculate the resistance change of metal strain gauges as a function of the position on a thick diaphragm, a thin membrane and a disc simply supported at the rim. The results of finite element calculations presented reveal that large deviations from these equations occur for strain gauges on thin membranes made of soft materials.

对TC2钛合金焊接接头进行硬度测试以及拉伸、疲劳对比试验，并观察全部疲劳断口，分析焊接接头光滑试样的疲劳性能与影响因素。结果表明，焊缝区的硬度最高，约高于母材50HV，塑性较差，焊缝中的微观焊接缺陷是不可避免的，是影响焊接接头疲劳寿命的主要因素；热影响区的硬度较低，塑性较好，其拉伸强度是焊接接头部位的最薄弱区，但却有较好的疲劳性能。在99%可靠度的前提下，焊接接头的疲劳寿命约为母材寿命的46%。