What surface hardness gradients exist in molded composite parts?
Surface hardness gradients in molded composite parts refer to variations in hardness across the surface due to differences in material composition, curing processes, or manufacturing techniques. These gradients can arise from uneven resin distribution, incomplete curing, or fiber orientation inconsistencies. Hardness variations may affect mechanical performance, wear resistance, and durability. Common measurement methods include Shore hardness testing and micro-indentation. Understanding and controlling these gradients is crucial for optimizing part quality in industries like aerospace, automotive, and structural engineering. Proper mold design, material selection, and process control can minimize undesirable hardness variations.
