使用同轴探头进行微波无损探伤的研究

介绍了一种在微波频段新型的无损探伤方法，即利用同轴线探头对金属表面裂痕进行探测，并通过一些试验数据证明了该方法的可行性和潜在能力。

腐蚀性溶液介电常数测量的探头研究

测量化学反应物的介电常数 ,必须对测量探头进行保护。采用 FDTD方法在圆柱坐标下对一种有保护层的新型同轴线探头进行分析计算 ,得到了被测物介电常数与反射系数之间的关系。对圆柱中心以及薄层结构进行了特殊处理。

金属表面微波无损探伤方法的研究

介绍一种新型的无损探伤方法 ,即在微波频段 ,利用同轴线探头对金属表面裂痕进行探测 。

On Solving TM_(0n) Modal Excitation in a Ka-Band Overmoded Circular Waveguide by the Conservation of Complex Power Technique

To measure the radiation properties of relativistic diffraction generator(RDG) in Ka-band,a TM0n modal excitation model is established,which consists of an overmoded circular waveguide and a coaxial line feeding probe.Using the transverse E-field mode matching and the conservation of complex power technique(CCPT),we deduce the scattering matrix at coaxial line to coaxial line and coaxial line to circular waveguide junctions.Then using the overall cascaded junction scattering matrix,the numerical results for the reflection coefficient of the coaxial line and the power distribution of TM0n multi-modal are presented.The numerical results are in agreement with HFSS simulation results and experimental results.The analysis shows that by choosing the appropriate position of coaxial line probe,the power proportion of the device operating mode excited in circular waveguide could be the largest.

金属与导电材料

介绍了一种在微波频段新型的无损探伤方法,即利用同轴线探头对金属表面裂痕进行探测,并通过一些试验数据证明了该方法的可行性和潜在的能力。