纤维金属层合板全芳纶排布平均透射损失最高：《科学报告》在63至1300赫兹评估、基线为铝玄武岩排布，11月13日刊出
《科学报告》于2026年11月13日刊出纤维金属层合板冲击阻抗失配与透射损失研究。论文由Pai、Rodriguez-Millan、Satish等人发表，数字对象标识符为10.1038/s41598-026-79854-8，2026年4月1日收稿、11月3日接受。
研究建立了一套计算、解析与实验相结合的框架，评估含织物增强聚合物芯层的纤维金属层合板的声学透射损失。研究以基于白金汉π定理的无量纲冲击阻抗公式考察材料属性（含泊松比）对三维弹性波传播的影响，并辅助材料选型。
方法上，研究先以介观尺度的代表性体积元方法推导芳纶、玄武岩与Zylon增强层合片的等效正交各向异性属性，再把这些属性代入宏观尺度的有限元谐波声学框架，在63至1300赫兹频率范围内评估透射损失。
实验基准来自阻抗管测量，基线构型为铝、玄武岩、玄武岩、玄武岩、玄武岩、铝的排布。数值结果显示，在所研究的构型中，全芳纶排布的平均数值透射损失最高；芳纶与玄武岩、Zylon与玄武岩的混杂排布，其平均透射损失也高于全玄武岩构型。
论文同时指出，实验测得的透射损失随频率下降的幅度，比理想化的解析与有限元预测更强，说明计算模型尚未完全捕捉的物理与边界效应在起作用。该研究获欧盟地平线2020研究与创新计划玛丽·斯克沃多夫斯卡-居里行动第101202017号资助协议支持。
（来源：《科学报告》）
An All-Aramid Layup Gives the Highest Mean Transmission Loss in Fiber Metal Laminates: Evaluated From 63 to 1,300 Hertz Against an Aluminium Basalt Baseline in Scientific Reports, Published November 13
Scientific Reports published a study of shock impedance mismatch and transmission loss in fiber metal laminates on November 13, 2026. The paper, by Pai, Rodriguez-Millan, Satish and co-authors, carries digital object identifier 10.1038/s41598-026-79854-8, was received on April 1, 2026 and accepted on November 3, 2026. The study developed an integrated computational, analytical and experimental framework to evaluate the acoustic transmission loss of fiber metal laminates incorporating fabric-reinforced polymer core plies. A dimensionless shock-impedance formulation based on the Buckingham pi theorem was used to examine the influence of material properties, including Poisson's ratio, on three-dimensional elastic wave propagation and to aid material selection. A mesoscale representative volume element approach derived the effective orthotropic properties of aramid-, basalt- and Zylon-reinforced plies, which were then incorporated into a macroscale finite-element harmonic-acoustics framework to evaluate transmission loss over the 63 to 1,300 hertz frequency range. Impedance-tube measurements of the baseline aluminium-basalt-basalt-basalt-basalt-aluminium configuration provided the experimental benchmark. Among the configurations investigated, the all-aramid sequence exhibited the highest mean numerical transmission loss, while aramid-basalt and Zylon-basalt hybridization also increased the mean transmission loss relative to the all-basalt configuration. The paper also reports that the experimental measurements showed a stronger frequency-dependent reduction in transmission loss than the idealized analytical and finite-element predictions, highlighting physical and boundary effects not completely captured in the computational models. The work received funding from the European Union's Horizon 2020 programme under Marie Skłodowska-Curie grant agreement 101202017.
(Source: Scientific)
来源：《科学报告》
发布：GSM·美国（发布链接）
图片来源：图：碳纤维织物片材的编织纹理。Racingjeff，CC BY-SA 3.0，经 Wikimedia Commons。 / Photo: Racingjeff, CC BY-SA 3.0, via Wikimedia Commons.
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