Process Capability Indices Cp and Cpk for Textiles
topic
Process capability index Cp measures the ratio of specification tolerance width to six-sigma process spread, while Cpk incorporates process mean centering within the tolerance to provide a combined capability and centering index; textile applications quantify capability for yarn linear density, fabric weight per square metre, colour coordinates, and tensile strength against customer specification limits.
Role
Quantifies the inherent ability of textile manufacturing processes to consistently produce within customer specification limits, enabling objective assessment of whether process improvement investment is needed to achieve target capability levels and providing supplier qualification data for textile brand quality assurance programmes.