The effect of black plate on corrosion resistance of T5 tinplate was studied by glow discharge spectrograph, X-ray diffractometer （XRD）, stress tester, roughness tester and metallographic microscope. The result show...The effect of black plate on corrosion resistance of T5 tinplate was studied by glow discharge spectrograph, X-ray diffractometer （XRD）, stress tester, roughness tester and metallographic microscope. The result shows that black plate influences corrosion resistance of T5 tinplate intensely. It also indicates that the increase of content of manganese, phosphorus, silicon and aluminum in black plate would reduce the corrosion resistance of T5 tinplate and the increase of degree of crystal orientation on （200） crystal face, ｜X-Y｜ value （internal stress difference within two orientation）, roughness and exposure degree of iron grain after the same acid wash of black plate would enhance the corrosion resistance of T5 tinplate and the grain number of black plate has small effect on corrosion resistance of T5 tinplate.展开更多
声学黑洞(Acoustic Black Hole,ABH)技术作为一种新型高效的能量聚焦以及振动控制技术,在减振降噪方面具有很好应用潜力。铝型材板结构作为一种夹层结构,具有高比刚度和高比强度等优异轻量化特性,广泛应用于列车外地板、船舶、航空航天...声学黑洞(Acoustic Black Hole,ABH)技术作为一种新型高效的能量聚焦以及振动控制技术,在减振降噪方面具有很好应用潜力。铝型材板结构作为一种夹层结构,具有高比刚度和高比强度等优异轻量化特性,广泛应用于列车外地板、船舶、航空航天等领域中。为了探究ABH和铝型材板结构相结合后是否还具有典型的ABH效应,运用有限元数值模拟方法研究嵌入式ABH铝型材板结构的振动能量聚焦特性。对于频点和频带聚焦特性分析结果表明,在铝型材板结构中嵌入ABH特征结构可以起到显著振动能量聚焦效果。此外,根据聚焦特性分析结果,在ABH铝型材板结构中的ABH特定区域内敷设阻尼材料,并通过仿真计算验证了其减振特性。结果表明,由ABH铝型材板结构附加阻尼材料所得的组合结构振动水平显著低于普通铝型材板结构,部分频率下振动衰减高达52.6 dB。这为轨道交通领域提供了一种很有应用潜力的结构减振降噪新思路。展开更多
文摘The effect of black plate on corrosion resistance of T5 tinplate was studied by glow discharge spectrograph, X-ray diffractometer （XRD）, stress tester, roughness tester and metallographic microscope. The result shows that black plate influences corrosion resistance of T5 tinplate intensely. It also indicates that the increase of content of manganese, phosphorus, silicon and aluminum in black plate would reduce the corrosion resistance of T5 tinplate and the increase of degree of crystal orientation on （200） crystal face, ｜X-Y｜ value （internal stress difference within two orientation）, roughness and exposure degree of iron grain after the same acid wash of black plate would enhance the corrosion resistance of T5 tinplate and the grain number of black plate has small effect on corrosion resistance of T5 tinplate.
文摘声学黑洞(Acoustic Black Hole,ABH)技术作为一种新型高效的能量聚焦以及振动控制技术,在减振降噪方面具有很好应用潜力。铝型材板结构作为一种夹层结构,具有高比刚度和高比强度等优异轻量化特性,广泛应用于列车外地板、船舶、航空航天等领域中。为了探究ABH和铝型材板结构相结合后是否还具有典型的ABH效应,运用有限元数值模拟方法研究嵌入式ABH铝型材板结构的振动能量聚焦特性。对于频点和频带聚焦特性分析结果表明,在铝型材板结构中嵌入ABH特征结构可以起到显著振动能量聚焦效果。此外,根据聚焦特性分析结果,在ABH铝型材板结构中的ABH特定区域内敷设阻尼材料,并通过仿真计算验证了其减振特性。结果表明,由ABH铝型材板结构附加阻尼材料所得的组合结构振动水平显著低于普通铝型材板结构,部分频率下振动衰减高达52.6 dB。这为轨道交通领域提供了一种很有应用潜力的结构减振降噪新思路。
