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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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孔结构周期调制通孔多孔铝合金及其吸声性能
Keywords: 金属材料,多孔铝合金,孔结构,周期调制,吸声
Abstract:
？采用铝熔体在周期多孔介质间渗流凝固方法制备了孔结构周期调制多孔铝合金,在试验范围内吸声系数的实验测量值与模型计算基本吻合,基于模型研究了调制周期数、调制顺序及同一周期单元内不同孔径层的厚度比与吸声性能的关系,表明孔径的调制分布对2khz以上的宽频声波吸收有较大影响,对低频吸收未发现明显改善.
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