Standard Practice for Guided Side Bend Evaluation of Polyethylene Pipe Butt Fusion Joint

Importancia y uso:

5.1 This standard practice is a procedure to evaluate the ductility of side bend test specimens that are a transverse section of the pipe wall and butt fusion. Side bend test specimens are prepared from bend test coupons from sample polyethylene pipe butt fusion joints that are made using polyethylene pipe having a wall thickness of approximately 1 in. (25 mm) and greater. A three-point bend is applied to the side bend test specimen by pressing the side bend test specimen into a gap between two rotatable supports with a loading nose. The bending load is applied such that the bending strain is transverse to the plane of the fusion joint.

5.2 Equipment for cutting bend test coupons, preparing side bend test specimens and conducting this practice is available for laboratory and for field use.

5.3 Benchmark criteria for evaluating field testing results are developed by testing a statistically valid number of sample butt fusions in a controlled environment, preferably using equipment for field use. Guided side bend test results from field tests are then evaluated by comparison to benchmark test results from the controlled environment.

Subcomité:

F17.40

Referida por:

F2620-24, F3508-21A, F0645-25, F3507-21, F3525_F3525M-21

Volúmen:

08.05

Número ICS:

25.160.40 (Welding joints and welds)

Palabras clave:

bend test coupon; butt fusion joint test; fusion joint ductility; guided side bend test specimen; three point bend test; three point guided side bend test;