: Based on the results of verification, systems are assigned classes (e.g., A, B-1, B-2, C) that define their performance limits. For instance, a Class B-1 classification requires an error of strain not to exceed the greater of of the value.
In short, ASTM E83 provides the roadmap for verifying and classifying the instruments we use to measure how much a material stretches or compresses under load. It ensures that the extensometer you’re using—whether it's a traditional clip-on gage or a high-tech optical system—is actually telling you the truth. Key Takeaways from the Standard astm e83 pdf
"Then you know you also need a calibrated micrometer for the fixed gauge-length check." : Based on the results of verification, systems
The verification must be performed using a device capable of applying known displacements. Common devices include: Common classes include: A core component of an
Extensometers are classified by the maximum allowable error. Common classes include:
A core component of an ASTM E83 report is determining the system's class. The classifications are established by mapping test results against strict maximum error limits: Classification Max. Error of Gage Length Max. Error of Strain Common Use Cases ±0.0001plus or minus 0.0001 Highest precision calibration standards Class B-1 ±0.0001plus or minus 0.0001 General modulus and yield strength testing Class B-2 ±0.0002plus or minus 0.0002 Moderately precise tension testing Class C ±0.001plus or minus 0.001 Standard material yield mapping Class D ±0.01plus or minus 0.01 High elongation rubber or plastic testing 🛠️ Essential Elements for the Technical Report