ASTM D5397 - NOTCHED CONSTANT TENSILE LOAD TESTER - STRESS CRACK RESISTANCE OF HDPE GEOMEMBRANES

Compliance Standards:

1. ASTM D5397, IS 16346:2015
   

Applications:

1. Notched Constant Tensile Load Testing Machine for Plastic is used to evaluate the stress crack resistance of polyolefin geomembranes by notched constant tensile load test. It is mainly applicable to the geomembranes used on the landfill site. Dumbbell shaped notched test specimens from a polyolefin sheet are subjected to a constant tensile load in the present of a surface-active agent and at an elevated temperature. The time to failure of test specimens is recorded and the results of a series of such tests conducted at different stress levels are presented by plotting stress level against failure time for each stress level on a log-log axis.
   

Salient Features:

1. Rust resistant exterior body
2. HMI Touch screen display
3. Quick and easy operation
4. Can achieve separate timing of each rack, each group of 3 racks, each group can be loaded with a different yield stress;
5. 30 working positions which support 10 groups tests under 20%-65% yield stress
6. Each group calculates load quality automatically;
7. Provides 02 methods of timing determination method and damage time determination method; And after the test is completed, the rupture time and average rupture time of each sample in each stress section can be consulted at any time to facilitate the analysis and judgment of the results.
8. Equipped with a circulating pump to ensure the uniform temperature of the test medium and improve the accuracy of the test.
   

Water bath details:

1. Construction: Double walled
2. Inner chamber: Stainless steel (SS 304)
3. Outer chamber: Stainless steel (SS 304)
4. Insulation: 50mm thick glass wool insulation on all sides.
5. Temp. Range: 5 °C above ambient to 100 °C
6. Heaters/rating: 3 Nos. S.S. sheathed immersion heaters of adequate length/3.0 KW
7. Temp. Control : Digital PID Controller
8. Control accuracy: +/- 0.5 °C or better
9. Power : 220/230 V AC single Phase.
   

Comes with following parts and accessories:

1. Blanking Die — A die suitable for cutting test specimens to the dimensions and tolerances shown in Fig. (All dimension is in mm)
2. Notching Device — A device or machine that can produce a consistent notch depth.
3. Blade — A single-edged razor made of carbon steel. The tip profile is that of an arrow rather than that of a chisel point. The sharpness of the point is critical to the cleanliness of the cut which effects the results of the test significantly
4. Waterbath