Functional, luxury, and niche textiles such as conductive, flame-retardant, antimicrobial, and high- fashion surfaces. This section explains practical decision criteria, typical test methods, and failure modes that matter in real production. Readers get checklists, calculation steps, and case examples connecting specifications to cost, reliability, and compliance. Links map core concepts to upstream inputs and downstream processes so choices remain consistent across sourcing, manufacturing, and end-use performance. Each article includes definitions, diagrams where helpful, and plain-language notes to help newcomers ramp quickly while giving experienced professionals the depth needed to troubleshoot and optimize. Standards references are cited with context, and whenever trade-offs exist, we make them explicit so you can defend decisions.
Composites, Aerospace & Automotive Textiles
Reduces a six-shot fair-fire series to a ballistic limit: V50 as the mean of the three highest partial and three lowest complete penetrations, the velocity spread against the acceptance limit, the zone of mixed results and the scatter of the series.
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Carpet & Floor Coverings
Converts tufting gauge and broadloom width into needle count, needle spacing in millimetres, tufts per square metre from the stitch rate, tufts inserted per minute, fabric take-off speed and area production.
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Geosynthetics & Civil Engineering
Checks a turf reinforcement mat against channel flow: applied boundary shear stress from depth and slope, Manning velocity, factor of safety on the permissible shear, the maximum flow depth the mat can hold and the discharge that goes with it.
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Composites, Aerospace & Automotive Textiles
Resolves the three yarn sets of a triaxial weave onto any test direction: strength along the axial direction, at the test angle and across it, the isotropy ratio the construction achieves, and the allowable load after a safety factor.
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E-Textiles, Smart Wearables & Biomimetics
Predicts degradation of silver-printed circuits through laundering: resistance after a given number of wash cycles, the growth ratio against the as-printed value, cycles to a defined failure threshold, life remaining and the added voltage drop and dissipation the growth causes.
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Agrotextiles & Environmental Shielding
Calculates night-time heating savings from an aluminised thermal screen: effective U-value allowing for incomplete closure, heat loss with and without the screen deployed, percentage energy saving, and nightly and seasonal energy saved across the house.
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E-Textiles, Smart Wearables & Biomimetics
Estimates harvesting from fabric layers separating during walking: open-circuit voltage, charge transferred per step, energy per cycle, average and usable electrical power, device capacitance and the load impedance that actually extracts it.
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Medical, Hygiene & Barrier Textiles
Models first-order hydrolytic strength loss in absorbable sutures: tensile retained at a given time in vivo, the retention percentage, the day the suture falls below its minimum useful strength and the margin that leaves.
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Smart & Electronic Textiles
Models a knitted piezoresistive strain sensor: resistance under strain, the change and sensitivity it delivers, the voltage swing through a matched divider and the finest strain the ADC can resolve.
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Sustainability & Utilities
Sizes a stenter exhaust heat recovery installation: heat available in the exhaust, duty actually recovered at the exchanger efficiency, annual fuel saved after boiler losses, the money that represents, simple payback and avoided CO₂.
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