BS EN 12814-4:2018规定了尺寸、取样方法和试样制备，以及垂直于焊缝进行剥离试验的条件，以确定剥离阻力和破坏行为。剥离试验可与其他试验（例如拉伸蠕变、宏观检查）结合使用评估由热塑性材料制成的焊接组件的性能。剥离试验适用于由热塑性材料制成的重叠焊接组件。 第5条中定义的T形剥离试验仅用于评估焊接板组件。本试验不适用于含有不同标称厚度板材的焊接试件。第6条中定义的脱粘试验仅用于评估管道/管件标称厚度大于10 mm的电熔接头。对于套筒熔合和标称外径小于或等于90 mm的电熔合套筒接头，将按照第7条的规定进行挤压试验。 挤压试验也可用于外径大于90 mm的电熔接头。电熔鞍座接头的挤压试验将按照ISO 13955[1]进行。交叉引用:ISO 5893CEN/TS 16892EN 14728EN 12201-3ISO 13955EN 1555-3ISO 13954购买本文件时提供的所有当前修订版均包含在购买本文件中。

BS EN 12814-4:2018 specifies the dimensions, the method of sampling and the preparation of the test specimens, and also the conditions for performing the peel test perpendicular to the weld in order to determine the peel resistance and the failure behaviour.A peel test can be used in conjunction with other tests (e.g. tensile creep, macroscopic examination.) to assess the performance of welded assemblies, made from thermoplastics materials.Peel tests are applicable to overlap welded assemblies made from thermoplastics materials.The T-peel test as defined in Clause 5 will be used only for assessing welded sheet assemblies. This test is not applicable to welded test pieces containing sheets of different nominal thickness.The decohesion test as defined in Clause 6 will be used only for assessing electrofusion joints with nominal thickness of pipe/fitting greater than 10 mm.For socket fusion and for electrofusion socket joints with nominal outside diameter less than or equal to 90 mm, a crush test will be used, as defined in Clause 7.The crush test can also be used for electrofusion joints with outside diameters greater than 90 mm.The crush test for electrofusion saddle joints will be performed in accordance with ISO 13955 [1].Cross References:ISO 5893CEN/TS 16892EN 14728EN 12201-3ISO 13955EN 1555-3ISO 13954All current amendments available at time of purchase are included with the purchase of this document.