??DW1441 Environmental Stress Crack Resistance Tester (NCTL) is used to evaluate the stress crack resistance of test specimens by ??????????notched constant tensile load test. Dumbbell shaped notched test specimens from a polyolefin geomembrane sheet are subjected to a constant tensile load in the present of a surface-active agent and at an elevated temperature.
??????????In this accelerated aging process, the sensitivity of polyolefin geomembrane sheet to stress cracking under constant tensile loading and accelerated environmental conditions ??????????can be evaluated by testing the failure oftest specimens at aspecified time and measuring the time of ??????specimen failure.????????
Features of environmental stress crack resistance tester
????????????????????1. Simplified structure, perfect modern design, stable performance,high level of automation; ??
??2. 30 working positions, each position is timed separately, support10 groups of tests under 20%~65% yield stress. The load weight of each group isautomatically calculated; ??????????????????
30 working positions
??3. LCD display, touch screen operation, easy and convenientwhen operates; ??
Soft ware
??4. Adopt constant temperature bath technology, PID automatictemperature control; ??
????5. Equipped with professional control program to calculate theload weight, simplify the operation; ??
??6. Low water level alarm, real-time monitoring the waterlevel;????
??7. Simultaneous loading system, reduce the test resulterror caused by loading specimen;??
??8. Equipped with sampling mold, easy to produce the specimen;??
Accessories
??9. Solution internal recycle system, keep the temperatureevenness;??
??10. Power-off restart and data protection technology,ensure operator’s safety and test continuity.??
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