Textile Engineering
Advanced ISO/ASTM Testing & Metrology
11 interactive Advanced ISO/ASTM Testing & Metrology tools. Every one shows its formula, a worked example and the standards it follows.
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- Air, Sea or Split: Late Shipment Expedite Sheet Worth of Choosing Style by Style
- Brownfield Expansion: What the Next Increment Costs Shared Plant the Proposal Forces
- Built Into the Fibre or Applied to the Cloth: What Protection Costs Over a Life What Moving to the Cheapest Protection Saves
- Buyer Chargeback: Contest, Fix or Accept Recoverable a Year
- Buyer Cost to Serve & Development Recovery Net Margin After Serving the Book
- Buyer Quotation Generator Order Value
- Buyer Terms & Effective Price Comparison Best Offer, Once Its Terms Are Paid For
- Buyer Test Plan & Laboratory Budget Laboratory Cost for the Range
11
tools
Testing & Quality
Advanced ISO/ASTM Testing & Metrology
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Advanced ISO/ASTM Testing & Metrology 11
- Where to Set the Acceptance Limit When the Laboratory Is Not Certain Premium Separates the two things a release test gets wrong - good lots downgraded because the reading was low, and out-of-specification lots shipped because the reading was high - and finds the acceptance limit and the number of replicates that cost least across both. Then prices the three ways out against each other: a sharper laboratory, a steadier process, and a mean put back in the middle. What Setting the Limit Properly Is Worth cost/yr
- Ball Burst Strength & Deformation Modeler (ASTM D6797) Recovers multi-directional strain at failure from a ball burst test: the dome geometry the distension implies, arc length and strain at burst, equivalent pressure under the ball and burst force normalised to fabric weight and thickness. Strain at Burst %
- CMC(l:c) Tolerance Ellipsoid Boundary Calculator Builds the CMC acceptability ellipsoid around a colour standard: the SL, SC and SH weighting functions, the lightness, chroma and hue semi-axes at the working l:c ratio and commercial factor, and the volume of colour space they enclose. Lightness Semi-Axis ΔL*
- Elmendorf Pendulum Energy & Tear Force Calculator Derives Elmendorf tear force from pendulum physics: potential energy at the raised and returned positions, the energy the tear absorbed, and the force per ply that energy represents over the standard tear length. Tear Force per Ply N
- Four-Point System Fabric Defect Index Calculator Grades a fabric roll on the four-point system: total penalty points from defects in each length band, the roll area in hundred-square-yard units, points per 100 yd² against the acceptance limit and the penalty budget still available. Penalty Density points/100 yd²
- Grab vs Strip Tensile Conversion Calculator Converts a strip tensile result into the grab equivalent by modelling fabric assistance from the unclamped width, and reports how much of the grab reading that assistance is actually contributing. Predicted Grab Strength N
- ISO 139 Conditioning Time to Moisture Equilibrium Estimates how long a textile must sit in the standard atmosphere to reach moisture equilibrium: conditioning time to a stated tolerance, the half-time of the approach, regain still remaining after a day and the moisture the sample will take up. Conditioning Time h
- Peel Adhesion of Reinforcing Fabrics Calculator (ASTM D4393) Reduces a three-specimen peel adhesion series for fabric vulcanised to rubber: mean peel force, adhesion per unit width, the scatter across specimens and the margin against a specification minimum. Peel Adhesion N/mm
- Sewn Seam Failure Mode Predictor (ASTM D1683) Predicts whether a sewn seam will fail in the thread or in the fabric: thread-derived seam strength from stitch density, the governing seam strength and efficiency, and the stitches per centimetre needed to move failure into the fabric. Governing Seam Strength N/25mm
- Sweating Guarded Hotplate Ret, Rct & Permeability Index Reduces guarded hotplate measurements to the ISO 11092 outputs: thermal resistance Rct, evaporative resistance Ret, the moisture permeability index that relates them, and the tog and clo equivalents of the thermal figure. Evaporative Resistance Ret m²Pa/W
- Yarn Evenness CVm% to Thin & Thick Place Predictor Converts yarn mass irregularity into predicted imperfections: the z-score each sensitivity threshold represents, thin and thick places per kilometre from the normal tail, total imperfections and the equivalent U% figure. Thin Places per km
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