Abstract This paper aims to examine the mechanical properties of the adhesive focusing on peel strength and cleavage strength for varying environmental and geometrical conditions. To that end, peel and cleavage specimens with variations in width were fabricated and examined according to American Society for Testing and Materials (ASTM) after conditioning them in different environmental conditions, including temperature (20 °C, 52.5 °C, and 85 °C) and humidity (48%, 71,5%, and 95%). The specimens were conditioned in the temperature-humidity controlled chamber for at least 96 h for moisture saturation at each humidity level. The effect of temperature, humidity, and width on peel and cleavage strengths were graphically and statistically examined by analyzing the testing data. As part of the statistical analysis, regression models, encompassing multiple linear regression (MLR) and response surface metamodels (RSM), were established to predict the peel and cleavage strengths. Through evaluation of R-squared values and graphs of the predicted values against the testing data, it was found that the RSM was more accurate than MLR. Key results indicated that the peel strength of tested adhesive specimens was increased with the increment in humidity up to 30.1% and was decreased by the maximum reduction of 28.2% with increment in specimen's width, while the cleavage strength of the tested specimens improved with the peak increment of 27.4% and 28.5% when the temperature and specimen's width was increased, respectively. The cleavage strength, however, was decreased up to 13.7% with the increment in humidity. Findings from 3-D surfaces generated from the RSM to observe the effect of different parameters on the peel and cleavage strength of adhesive joints were in agreement to the testing results. The statistical analysis indicated that the width was a significant parameter affecting the peel strength.

中文翻译：

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在动态信息标志中使用粘合剂连接进行剥离和解理强度测试

摘要 本文旨在检查粘合剂的机械性能，重点是不同环境和几何条件下的剥离强度和解理强度。为此，在包括温度（20°C、52.5°C 和 85°C）在内的不同环境条件下对它们进行调节后，根据美国材料与试验协会 (ASTM) 制造和检查宽度变化的剥离和解理试样) 和湿度（48%、71.5% 和 95%）。将样品在温湿度控制室中调节至少 96 小时，以在每个湿度水平下达到水分饱和。温度、湿度和宽度对剥离和解理强度的影响通过分析测试数据以图形和统计方式进行检验。作为统计分析的一部分，回归模型，包括多元线性回归（MLR）和响应面元模型（RSM），被建立来预测剥离和解理强度。通过评估 R 平方值和预测值与测试数据的图表，发现 RSM 比 MLR 更准确。主要结果表明，测试粘合剂试样的剥离强度随着湿度的增加而增加至 30.1%，随着试样宽度的增加，剥离强度最大降低 28.2%，而测试试样的解理强度随着峰值的增加而提高。当温度和试样宽度增加时，增量分别为 27.4% 和 28.5%。然而，随着湿度的增加，劈裂强度下降了 13.7%。从 RSM 生成的 3-D 表面的结果观察不同参数对粘合接头的剥离和解理强度的影响，与测试结果一致。统计分析表明，宽度是影响剥离强度的重要参数。