Peel Testing

Plastics pipes and fittings — Peel decohesion test for polyethylene (PE) electrofusion assemblies of nominal outside diameter greater than or equal to 90 mm.

The purpose of the test is to assess the cohesion of the pipe electrofusion socket assembly weld by examination of the decohesion of the electrofusion weld, by tensile stressing of a strip test sample under conditions which cause progressive peeling of the fused weld interface.

The decohesive strength of the assembly is characterized by the nature of the failure in the pipe wall, the Electro fusion fitting or the plane of the fused material and by the percentage decohesion.

An electrofusion coupling weld sample is machined as per the standard specifications, these weld sample are then subjected to a tensile stress at constant speed of 30mm/minute in the PIPETEST AUSTRALIA NATA certified laboratory.

When loading the test samples in one of our 10kN mechanical testing machine with state of the art software which allows for the choreographing of the test information in an easy to view format, providing graphs and calculations automatically.All NATA reports are supplied with results, tensile test graphs and photos.

When sending Electro fusion test welds to the lab for testing they are required to be cut 200 mm either side of the electrofusion coupling and sent along with the test documents filled out for each test piece with all the information that is required on the NATA report. The test welds need to be clearly marked, with a project number, welder personnel identification number and name, weld joint identification number and welding machine ID and date welded.

Peel Testing is an essential means of ascertaining the integrity of electrofusion welds and helps identify poor quality production welds or faulty products at the earliest stage, before it has the potential to become a costly error.

PIPETEST AUSTRALIA can do all your testing leaving the client with confidence in the work being carried out in a quality standard. We provide a service for making sure your next project runs well by verifying welding machines, qualifying the welding personnel and verifying welding parameters and procedure at the start of the project and during installations or production.