Rapid Crack Propogation Testing Machine (S4 test)
Standards
ISO 13477 Thermoplastics pipes for the conveyance of fluids Determination of resistance to rapid crack propagation (RCP) —Small-scale steady-state test (S4 test)
Principle
A section of thermoplastics test pipe of specified length, conditioned to a specified test temperature and containing a fluid at a specified test pressure, is subjected to an impact near one end, designed to initiate a fast-running longitudinal crack. The test pipe is subsequently examined to determine whether arrest or propagation of the crack has occurred.
Application
RCP is used to determine the critical pressure or critical temperature for rapid crack propagation.
Features
Parametrization through the touch display.
Fast pressure filling and accurate pressure control.
Automatic security confirmation system, correct location of the test sample and the striker blade are identified automatically, the blade will not be released if the sample not in position.
Ultralow temperature and high efficiency. Temperature can drop to -30℃ within 10min and multiple groups of samples can be treated simultaneously. Temperature can be monitored automatically.
The delivery frame is strong enough to support the pipe specimen up to 500mm.
Features for RCP Enclosure
It consists of front & rear sealing part, limiting ring, baffles, O-ring etc. A variety of specification are selected, including Φ63mm, Φ110mm, Φ160mm, Φ250mm, Φ315mm, Φ400mm and Φ500mm.
Seal parts, limiting ring and internal baffles are connected to each other, together with sample shall be fixed on the V-support on sample supporting seat. So that blade can impact the slotted are on test pipe.
Unique design makes the weight much lighter and with higher rigid which can bear 3 Mpa pressure.
Perfect structure ensures easy mounting and good sealing. It is also fast and easy to change to another pipe size of SDR.
Technical Parameters
Pipe Diameter Size | ≤Φ250mm or ≤Φ315mm (others on request) |
Impact Speed | 3 selectable speed (10m/s, 15m/s, 20m/s) or set a speed between 5m/s～15m/s, at a step of 0.5m/s |
Speed Accuracy | ±0.5m/s |
Pressure Range | ≤2.5 MPa (Nitrogen) |
Pressure Accuracy | Grade 0.5 |
Control Mode | PLC control and touch screen display |
Striker Blade Release | Pneumatic |
Pneumatic Energy Storage | Motor-driven |
Security Protection | IP55 |
RCP Low temperature conditioning cabinet |
Number of Test Station | 1 |
Pipe Diameter Size | ≤315mm |
Temperature Range | RT～-30℃ |
Temperature Display Accuracy | 0.1 ℃ |
Temperature Control Accuracy | ±3℃ |
Power Supply | 380（1-15%）VAC～380（1+10%）VAC 5kVA |
RCP Sample Delivery Unit |
Control Mode | PLC control and touch screen display |
Number of Test Station | 1 |
Sample Delivery Mode | Pneumatic and motor-driven |
Sample Delivery Distance | 3400mm |
Sample Delivery Speed | 370mm/s |
Longest Time for Sample Delivery | 21s |
Power Supply | 220VAC-15%～220VAC+10% 50Hz 300VA |
