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A practical guide to ISO 13935-1 seam tensile testing covering the strip method, seam failure modes, gripping, alignment, seam slippage, troubleshooting, load-cell selection and tensile testing machine configuration.

Learn how to measure opening and closing hinge torque, interpret torque-angle curves, avoid common test errors, and select a hinge torque tester for phones, tablets and laptops.

A practical guide to ASTM D7860 automated closure torque testing, covering application vs removal torque, torque retention, test setup, common measurement errors, fixtures, and automated torque tester selection.

A practical guide to UL 1642 lithium battery testing, covering cell types, electrical and mechanical abuse tests, pouch-cell round bar crush requirements and equipment selection.

A practical ISO 13934-1 fabric tensile testing guide covering the strip method, maximum force, elongation at maximum force, warp and weft testing, fabric slippage, jaw breaks, textile grip selection, quality control, and tensile testing machine selection.

UN 38.3 lithium battery testing covers environmental, mechanical and electrical transport safety tests from T.1 to T.8, including altitude, thermal cycling, vibration, shock, short circuit, impact/crush, overcharge and forced discharge. This guide explains test applicability, equipment selection and key laboratory considerations for lithium cells and batteries.