刚体位移对应变测试的影响

通过运用波前干涉理论,得到了贴片云纹干涉法测圆柱壳的位移与应变公式,分析了刚体位移及曲率对测试结果的影响情况.指出了在对压力容器及管道进行测试时应注意的事项.     

Towards a spin-ensemble quantum memory for superconducting qubits

This article reviews efforts to build a new type of quantum device, which combines an ensemble of electronic spins with long coherence times, and a small-scale superconducting quantum processor. The goal is to store over long times arbitrary qubit states in orthogonal collective modes of the spin-ensemble, and to retrieve them on-demand. We first present the protocol devised for such a multi-mode quantum memory. We then describe a series of experimental results using NV (as in nitrogen vacancy) center spins in diamond, which demonstrate its main building blocks: the transfer of arbitrary quantum states from a qubit into the spin ensemble, and the multi-mode retrieval of classical microwave pulses down to the single-photon level with a Hahn-echo like sequence. A reset of the spin memory is implemented in-between two successive sequences using optical repumping of the spins.     

折射率介质在制栅和云纹干涉法中的应用

利用光在折射率介质中传播可以减小光波波长的性质，提出用折射率介质法制作高频全息光栅技术，使光栅频率突破理论极限２／λ；并将折射率介质应用于云纹干涉法中，当试件栅频率为６００１／ｍｍ时，虚栅频率可达到６０００１／ｍｍ，利用其±５级衍射光进行干涉，测量灵敏度由０．８３μｍ提高到０．１６μｍ。     

A Shadow Moire Technique by Optional Multiple Light Sources for BGA Coplanarity Measurement

１ＩｎｔｒｏｄｕｃｔｉｏｎＳｈａｄｏｗｍｏｉｒｅｉｎｔｅｒｆｅｒｏｍｅｔｒｙｉｓａｗｈｏｌｅｆｉｅｌｄｎｏｎｃｏｎｔａｃｔ３Ｄｍｅａｓｕｒｅｍｅｎｔｔｅｃｈｎｉｑｕｅ．ＩｔｉｓｆｉｒｓｔａｐｐｌｉｅｄｂｙＨ．Ｔａｋａｓａｋｉ［１］ｉｎ１９７０．Ｉｎ...     

Une modélisation thermomécanique unidimensionnelle de la propagation d'un front de changement de phase dans un monocristal d'AMFA one-dimensional thermomechanical modeling of phase change front propagation in a SMA monocrystal

We propose a behavioral modeling that takes into account the thermomechanical couplings accompanying the phase transition in single-crystal CuZnAl samples. The goal of this model is to put forward the significant role played by the heat diffusion in the propagation mode of the phase change fronts. Numerical simulations showed the existence of such a phase change front and predicted the calorimetric and kinematic effects accompanying its propagation. In particular, an inversion of the propagation way during a creep test and caused by an increase of the room temperature was correctly simulated by the model. To cite this article: A. Chrysochoos et al., C. R. Mecanique 331 (2003).     

反射式动态云纹法实验研究

在沙丁机基础上，实现了反射式动态云纹测量法。该法可用于不透明模型的动态位移，应变及应力场的研究。     

185℃试件栅转移方法研究碳／双马复合材料层板的固化残余层间剪切应变

本文采用１８５℃试件栅转移方法和云纹干涉法的载波技术，研究了碳／双马复合材料层板（－４５／９０／４５２／９０／－４５２／９０／４５／０／－４５／４５）２Ｓ的固化残余层间剪切应变，并给出了剪应变沿铺层截面的分布。     

Telomeres photoreticulables—2. Synthese de telomeres photoreticulables a partir des hydroxy-2-ethyl acrylate et methacrylate et des β-cinnamoyl oxy ethyl acrylate et methacrylate

Photocrosslinkable telomers based on cinnamoyl derivatives of polyacrylates and methacrylates can be prepared either by reaction of cinnamoyl chloride with telomers of hydroxy-2-ethyl acrylate and methacrylate, or by direct telomerisation of β-cinnamoylethyl acrylate and methacrylate. The first method gives products containing at least 70% of the theoretical maximum olefinic unsaturation but with low $\text{DP}$_n [1–20]; the second method gives telomers of high $\text{DP}$_n with the maximum number of cinnamoyl side-chains.     

用云纹干涉法测量和研究双层钴合金的挠度

运用云纹干涉原理对双层钴-合金材料进行三点弯曲试验,测试其常温与高温条件下的挠度值.通过大量试验,且与千分表测试的挠度值进行比较.结果表明,常温条件下的云纹测试挠度值与千分表法可以达到同样的精确度.同时,该实验方法体现了高温云纹干涉法在材料高温力学性能测试方面的优越性.高温云纹法是非接触式测量,在高温环境下有效地解决了量具高温变形的困难,且结合云纹图像可以对试件受力动态变形情况进行实时观测和分析,是一种较为精确测试常温及高温挠度的新方法.     

用云纹干涉法测量带孔复合材料板应变系数

介绍云纹干涉法在复合材料中应用的一个例子，用云纹干涉法测量带孔复合材料板应变集中系数．