Without that PDF, you wouldn’t know the correct verification fixture size or the acceptable error margins.
This encompasses more advanced technologies, such as non-contact video or laser extensometers, that measure strain across a virtual gage length. The standard provides specific guidance for verifying these systems. astm e83 pdf
The extensometer is mounted on a high-precision calibration apparatus (often called an extensometer calibrator or interferometer). Without that PDF, you wouldn’t know the correct
Situation: You are testing 1018 steel to ASTM A370. Your extensometer was last calibrated 13 months ago. The clearly states in Section 8.2 that verification intervals shall not exceed one year. The extensometer is mounted on a high-precision calibration
The testing must take place in a temperature-controlled environment, as thermal expansion can alter calibration results.
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
The verification results determine the extensometer's classification. They quantify the system's performance across several metrics: