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Design solutions to mitigate high noise levels on small fishing vessels
Applied Acoustics ( IF 3.4 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.apacoust.2020.107632
Giorgio Burella , Lorenzo Moro

Abstract Occupational noise exposure is a documented risk among fish harvesters worldwide. So far, researchers’ main concern has been the detection of onboard noise levels causing noise-induced hearing loss. However, this fails to consider the relationship between hazardous noise levels and noise-induced fatigue. Differently from previous studies and regulatory standards, this research activity focuses on the development of noise control interventions to mitigate the risk of noise-induced fatigue on small fishing vessels. The procedure uses i) Statistical Energy Analysis (SEA), ii) experimental measurements, iii) graph theory to identify K-dominant transmission paths, and iv) a study of the contribution of airborne and structure-borne noise sources to the overall noise on board. We apply it to a case-study vessel from the small-scale fishing fleet of the Canadian province of Newfoundland and Labrador (NL). The results show that this procedure is a powerful tool to analyse noise propagation on small fishing vessels, and to analyse the effectiveness of noise control solutions. We show that noise transmission on this vessel is airborne and secondary structure-borne, and identify feasible and economical solutions to mitigate noise on board. We believe that these solutions can be applied to other small decked fishing vessels from NL.

中文翻译:

设计解决方案以减轻小型渔船的高噪音水平

摘要 职业噪声暴露是全球鱼类捕捞者的记录风险。到目前为止,研究人员的主要关注点是检测导致噪音引起的听力损失的机载噪音水平。然而,这没有考虑危险噪声水平与噪声引起的疲劳之间的关系。与以往的研究和监管标准不同,这项研究活动侧重于开发噪声控制干预措施,以减轻小型渔船因噪声引起的疲劳风险。该程序使用 i) 统计能量分析 (SEA),ii) 实验测量,iii) 图论来识别 K 主导传输路径,以及 iv) 研究空气传播和结构传播的噪声源对总噪声的贡献木板。我们将其应用于加拿大纽芬兰和拉布拉多省 (NL) 小型捕鱼船队的案例研究船。结果表明,该程序是分析小型渔船噪声传播和分析噪声控制解决方案有效性的有力工具。我们证明了这艘船上的噪音传播是通过空气传播和二级结构传播的,并确定了可行且经济的解决方案来减轻船上的噪音。我们相信这些解决方案可以应用于荷兰的其他小型甲板渔船。我们证明了这艘船上的噪音传播是通过空气传播和二级结构传播的,并确定了可行且经济的解决方案来减轻船上的噪音。我们相信这些解决方案可以应用于荷兰的其他小型甲板渔船。我们证明了这艘船上的噪音传播是通过空气传播和二级结构传播的,并确定了可行且经济的解决方案来减轻船上的噪音。我们相信这些解决方案可以应用于荷兰的其他小型甲板渔船。
更新日期:2021-01-01
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