Acoustic insulation optimization of the ship decks to contain impact noise is generally obtained by adopting suitable types of viscoelastic resilient materials. For this purpose, it is necessary to be able to make a correct choice of material. This is obtained by experimentally identifying the vibro-acoustic behavior of the combined semi-reverberant room and floor system according to an ISO standard (ISO 16283-2). These tests are generally onerous as they require the availability of the floor with both trimmed and untrimmed configurations. In addition, qualified technicians are needed to correctly spread the material on the floor. Finally, after the test has ended, the material must be removed and disposed of properly. To reduce this wasted time and cost, in this paper, a new methodology is proposed that predicts the vibro-acoustic behavior of the floor and viscoelastic material assembled together starting from separate dynamic information of the two components. Once these two elements are properly experimentally identified, the proposed method foresees the vibro-acoustic response of the overall system in presence of an impact footfall excitation.

中文翻译：

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通过冲击试验对带有阻尼材料的钢桥面板进行动态表征

船舶甲板的隔音优化以包含冲击噪声通常通过采用合适类型的粘弹性弹性材料来实现。为此，必须能够正确选择材料。这是通过根据 ISO 标准 (ISO 16283-2) 对组合式半混响房间和地板系统的振动声学行为进行实验识别而获得的。这些测试通常是繁重的，因为它们需要具有修剪和未修剪配置的地板的可用性。此外，还需要合格的技术人员将材料正确地铺在地板上。最后，在测试结束后，必须将材料移除并妥善处理。为了减少浪费的时间和成本，在本文中，提出了一种新的方法，从两个组件的单独动态信息开始，预测地板和粘弹性材料组装在一起的振动声学行为。一旦通过实验正确识别了这两个元素，所提出的方法就可以预见整个系统在存在冲击脚步激励时的振动声学响应。