extensometer Articles

  • Strain Measurement in HDPE Geomembrane Tensile Tests

    According to ASTM D 638, the tensile strain in an HDPE geomembrane dumbbell specimen subjected to a tensile test should be evaluated using an extensometer that records the elongation of a defined length of the central portion of the specimen. However, the current practice in the United States for HDPE geomembrane quality control and conformance testing consists of following the 1991 NSF standard ...

    By ASTM International

  • Structural Monitoring Inside a Copper Mine

    CAS DataLoggers recently supplied the intelligent datalogging solution for the operators of a copper mine. For the safety of both miners and machinery, it was essential that any potentially dangerous situations were identified early by closely monitoring the mine’s entire structure to detect ground movement or subsidence around the mine which could make the structure become unstable. A ...


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