A new experimental technique is proposed to measure the pressure gradient in corner laminates with the aim of guiding manufacturing practices that can produce composites laminates to the desired thickness. A pressure mapping sensor was placed between a metal mould tool and a silicone sheet that acts as an idealised composite part. The compaction pressure loss in internal corners and rise in external corners is reported for the first time, covering a part thickness to radius ratio of 0.2 to 0.8 in the corner. A conclusive trend was observed in internal corners, where the pressure drop increases proportionally with the thickness to radius ratio. The sensor thickness, bulk, and contact with the tool created difficulties in measuring the true extent of the pressure rise for external corners. Stretchable thin film sensors might provide better alternatives for future studies looking to investigate pressure gradients in doubly curved geometries.

提出了一种新的实验技术来测量角部层压板中的压力梯度，目的是指导制造实践，以生产所需厚度的复合材料层压板。压力映射传感器放置在金属模具和作为理想化复合部件的硅胶片之间。首次报道了内角的压实压力损失和外角的上升，覆盖了角部 0.2 到 0.8 的零件厚度半径比。在内部拐角处观察到一个决定性的趋势，其中压降与厚度半径比成比例增加。传感器的厚度、体积和与工具的接触在测量外角压力升高的真实程度方面造成了困难。