High material elongation (up to 1000%) exceeds standard frame travel limits and causes traditional clamp jaws to experience severe specimen slippage.
Utilize an extra-height, single- or dual-column frame fitted with pneumatic self-tightening eccentric roller or wrap-around grips.
Never use standard manual screw grips; vulcanized rubber narrows drastically under tension and requires self-adjusting pneumatic jaws.
Never use standard manual screw grips; vulcanized rubber narrows drastically under tension and requires self-adjusting pneumatic jaws.
Constant pneumatic jaw closure ensures uniform pressure across the tabs, adapting natively to high-strain cross-section contraction.
Deploy a non-contacting video extensometer to capture strain tracking flawlessly without inducing physical surface cuts.
Relying on crosshead travel displacement to calculate strain, which introduces severe errors from grip seating and system compliance.
Typical testing system controllers rely on 24-bit resolution. Under high-accuracy flexural analysis, this creates a data phenomenon called **”stair-stepping”** or quantization error. When trying to track minor micro-deflection in rigid polymers, 24-bit electronic circuits suffer from resolution limits, dropping critical transition points during initial load curves.
Newton Characterization™ architecture utilizes a 32-bit analog-to-digital processor converter. This increases measurement fidelity by a factor of 256x, outputting 4.29 billion discrete signal thresholds. Electrical chatter is actively muted under a dedicated 100,000:1 Signal-to-Noise Ratio (SNR).
Comparing standard 24-bit quantization with Newton™ 32-bit resolution
Observe the stepped resolution blocks in the legacy 24-bit curve (Red) versus the absolute **analog-smooth response curve** captured by Newton™ 32-bit architectures (Green). This fidelity is what prevents mechanical data variance during modulus evaluation.
Expert Engineering Commentary
Core Problem Identification
Specimen thinning during high-stretch phases causing the coupon to slip out of standard mechanical manual screw-tightened grips.
Root Cause Analysis
Knife-edge mechanical extensometers tearing or sliding along highly elastic surfaces, introducing noise and invalid strain spikes.
Hardware Specific Solutions
Pneumatic side-action or eccentric rolling grips that dynamically increase clamping force as the material thins down-stroke.