For food materials, Young’s modulus is usually considered valid across which range of strain

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BlackTom AI · Accepted Answer

When evaluating the question about the valid strain range for Young's modulus in food materials, we begin by listing all provided options to compare them against typical elastic behavior.
Option 1: '2 - 5%'. This range is relatively high for elastic (linear) elasticity in many food materials; beyond a small strain, many materials exit the linear-elastic region, so 2–5% is generally too large to be considered universally valid for Young's modulus in foods.
Option 2: '0.01 - 0.1%'. This range is very small and represents a highly limited portion of the elastic region. While some precise measurements use very small strains, stating such a narrow window as the standard across foods would be inaccurate because different foods exhibit different elastic limits and reporting conventions.
Option 3: '0.1 - 2%'. This option sits within the typical experimental experience for many foods, where the linear elastic (Hookean) response often holds up to around a fraction of a percent to a couple percent strain, with 0.1–2% commonly cited as the practical range for defining Young's modulus in food materials.
Option 4: '5 - 20%'. This range is well into the large-strain region for many foods, where material behavior shifts away from linear elasticity toward nonlinear or plastic behavior; thus, it is unlikely to be considered the valid range for defining a constant Young's modulus.
To decide, recall that Young's modulus is defined in the linear-elastic portion of the stress-strain curve, and for food materials this linear region is typically limited to about a percent or two of strain, making 0.1–2% a sensible overall range. The other ranges either underestimate the precision required or extend into nonlinear territory where the modulus would no longer be constant.

For food materials, Young’s modulus is usually considered valid across which range of strain

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