ASTM A1061 test method covers the procedural testing of mechanical properties of multi-wire steel prestressing strands for evaluation purposes. The strength and elongation of the strand are also determined. The test results are to be presented in either inch-pound units or SI units.
ASTM A1061 test method deals with the proper application of the mechanical properties of the strand and how they can be maintained or manipulated. This test determines the breaking strength of the strand and calculates the conditions of premature failure. The test failure risks and errors in testing can be determined and dealt with.
A tensile testing machine is used along with the extensor meter. Yield strength is determined, and then the specimen is placed in the test frame, and the gauge length is adjusted. The elastic modulus of the specimen to the application of load is calculated through a computerized data acquisition system. Through the aid of various processes, the credibility of the test is indicated. Temperature, duration and breaking strength, and load application are studied.
Specimen Size :
The gauge length of the specimen should be at least 60 times the nominal strand diameter.
All the measurements are to be done in SI Units or Inch pound units. Class B-1, an extensometer with a 24 inches[600 mm] gauge length, is used. Class D, an extensometer, a linear dial gauge, or ruler with the precision of 61/16 inches [2.0 mm] shall be used. The gauge length shall not be less than 24 in. [600 mm] The temperature of the test specimen shall be maintained at 6863.5 °F [2062 °C].
ASTM E572 test method covers the analysis of stainless and alloy steels by Wavelength Dispersive X-ray Fluorescence Spectrometry (WDXRF). It provides rapid, multi-element determinations with sufficient accuracy to assure product quality.
The ASTM D2674 is a standard test method for the analysis of sulfochromate etches solution used in the surface preparation of aluminum. The ASTM D2674 standard specifies a method for determining the efficacy of an etchant used to prepare the surface of aluminum alloys for subsequent adhesive bonding.
An immunological method for quantization of Hevea Natural Rubber (HNRL) proteins using rabbit anti-HNRL serum. Rabbits immunized with HNRL proteins react to the majority of the proteins present, and their sera have the capability to detect most if not all the proteins in HNRL.
ASTM G65 measures the resistance of metallic materials to abrasion using the dry sand/rubber wheel apparatus. The quality, durability, and toughness of the sample are determined using this test. Metallic materials are ranked in their resistance to scratching abrasion under a controlled environment.
ASTM E2141 test methods provide accelerated aging and monitoring of the performance of time-dependent electrochromic devices (ECD) integrated in insulating glass units (IGU). This test helps to understand the relative serviceability of electrochromic glazings applied on ECD.
ASTM C724 test method is used in analyzing the quality and ease of maintenance of a ceramic decoration on architectural-type glass. This test method is useful in the acknowledgment of technical standards.
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