The case for reviewing laboratory‐based road transport simulations for packaging optimisation,Packaging Technology and Science

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The case for reviewing laboratory‐based road transport simulations for packaging optimisation
Packaging Technology and Science ( IF 2.8 ) Pub Date : 2021-02-26 , DOI: 10.1002/pts.2563
Vincent Rouillard ₁ , Matthew James Lamb ₁ , Julien Lepine ₂ , Michael Long ₁ , Daniel Ainalis ₃

Affiliation

Today, there exist a number of standards designed to assist packaging engineers with implementing suitable laboratory testing regimes for road transport. However, these standards generally focus on translational vibrations and do not include other motions that may affect survival rates during transport (e.g., pitch and roll). The standards also do not account for the significant variations in vibration (root mean square [rms]) levels that are clearly evident during transport. Further, the analysis and interpretation of vibration frequency spectra typically ignore the possible presence of harmonics or shocks. Most standards also advocate some form of time compression to reduce testing duration by artificially amplifying the simulated vibrations. Each of these individual approaches combines to render the simulated vibrations currently in use unrepresentative of what occurs during transport, thereby making it difficult to optimise packaging systems. This article focuses on road transport shocks and vibrations and highlights the shortcomings of proposing and making changes to test methods based on limited data obtained from specific transport scenarios. It argues that only once all the evidence, taking into account a broader set of scenarios from multiple studies, has been collected and the correct scientific analysis applied, should changes to test protocols be proposed and implemented. The paper includes specific recommendations for further evidence collection and analysis for each of the main issues associated with road transport vibrations, namely, spectral shape, rms levels and test duration, nonvibratory events such as shocks and multiaxis vibrations.

中文翻译：

审查基于实验室的道路运输模拟以优化包装的案例

如今，存在许多旨在帮助包装工程师实施适用于公路运输的实验室测试制度的标准。但是，这些标准通常集中于平移振动，并且不包括可能影响运输过程中生存率的其他运动（例如，俯仰和横滚）。该标准也没有考虑运输过程中明显明显的振动水平（均方根[rms]）水平的显着变化。此外，振动频谱的分析和解释通常会忽略谐波或冲击的可能存在。大多数标准还提倡某种形式的时间压缩，以通过人为地放大模拟振动来减少测试时间。这些单独方法中的每一个都组合在一起，使当前使用的模拟振动无法代表运输过程中发生的情况，从而难以优化包装系统。本文着重于道路运输的冲击和振动，并着重指出了基于从特定运输场景获得的有限数据提出并更改测试方法的缺点。它认为，只有在收集了所有证据的基础上，并考虑到来自多个研究的更广泛的情景，并应用正确的科学分析，才应提出并实施对测试方案的更改。该文件提出了一些具体建议，以进一步收集和分析与公路运输振动相关的每个主要问题，即频谱形状，

更新日期：2021-04-29

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