The work of fracture in uniaxial and biaxial oriented unplasticised polyvinylchloride pipes

Kwon, Jun-Hyun; Truss, R. W.

doi:10.1016/s0013-7944(01)00096-0

Cited by 16 publications

(8 citation statements)

References 14 publications

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“…PVC from extruded pipes is not an isotropic material and the usual failure direction in field situations are always in the longitudinal direction, that is, extrusion. Similarly, Kwon and Truss [ 22 ] in a similar approach with the same geometric particularities, studied samples of bi‐oriented (O‐PVC) pipes. Laurini and coworkers [ 23 ] studied the correlation between the essential work of fracture and the degree of gelation of U‐PVC compositions, and identified that EWF parameters correlates very well with the degree of gelation.…”

Section: Introductionmentioning

confidence: 99%

Application of fracture mechanics for the characterization of PVC pipes. I. Evaluation of the applicability of the EWF technique in specimens produced directly from pipes

Rodolfo

2020

Vinyl Additive Technology

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Unplasticized (U‐PVC) and modified (M‐PVC) pipes used in irrigation and infrastructure applications in Brazil (nominal diameter DN 300, outside diameter 326 mm), were evaluated according to various fracture mechanics methodologies, including essential work of fracture (EWF), C‐ring toughness and fracture toughness parameters (stress intensity factor KC and energy release rate GC, both at plastic collapse). These pipes were also evaluated for the quality of processing (degree of gelation) via DSC and tensile strength. Results show that the differences in behavior against fracture propagation are sensitive, depending on the technique, when comparing the results between the different types of pipes, opening up new possibilities for testing this product. This possibility is particularly interesting in the case of the evaluation of the degree of gelation in industrial process controls, since the dichloromethane (DCMT) solvent immersion method still in use tends to be replaced in the future by alternative methodologies due to chemical exposure factors.

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Section: Introductionmentioning

confidence: 99%

Application of fracture mechanics for the characterization of PVC pipes. I. Evaluation of the applicability of the EWF technique in specimens produced directly from pipes

Rodolfo

2020

Vinyl Additive Technology

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“…However, the notch direction of these test specimens was selected in the direction of the ring (hoop), and the usual direction of failure of this type of product, in real situations of application, is always in the longitudinal direction, that is, the extrusion direction. Similarly, Kwon and Truss performed a similar study, with the same geometrical features, but in samples of bi‐oriented PVC pipes, in which the question of the removal of test specimens directly from the pipes is even more critical, since any planning attempt would result in loss of molecular orientation obtained during processing.…”

Section: Introductionmentioning

confidence: 99%

The essential work of fracture characterization of PVC pipes and its correlation to the degree of gelation

Rodolfo

2018

Vinyl Additive Technology

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PVC pipes (ABNT NBR 5647) were characterized by its essential work of fracture (EWF), using test specimens prepared from flattened sections and directly from rings cut from the pipes. These pipe samples were also characterized for the degree of processing by immersion in dichloromethane and differential scanning calorimetry (DSC). The results obtained for the essential work of fracture show statistically identical values, independently of the type of test specimen, demonstrating that this test can be carried out directly on test specimens prepared from pipe rings, without changes in their actual state of processing. The evaluation of the processing quality through immersion in dichloromethane does not apply to ABNT NBR 5647 pipes, since the results show that, despite the strong attack after immersion, the pipes are well processed, taking into account these new evaluation parameters.

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“…Due to its good mechanical stability and molecular structure PVC has a wide role in commercial usage [8]. Toughness due to fracture depends upon the molecular structure of polymers [9]. PVC tube filled with water test under concentrically indirect axial load to determine the slenderness behavior both experimentally and theoretically [11].…”

Section: A Poly-vinyl Chloride (Pvc) Tubementioning

confidence: 99%

“…Figure (a). The uniaxial and biaxial oriented PVC (UniOPVC & BiOPVC) pipes were tested in tangential direction as shown in Figure (b) and concluded that UniOPVC and BiOPVC shows good behaviour in post-yielding load [9]. The critical buckling load was determined [1] as shown in Figure 1(a) and further investigated that additional instability (additional folds) were produced due to deformations [24].…”

Section: Geometric and Materials Property Of Pvc Tubementioning

confidence: 99%

Conventional and Rubberize Concrete Cylinders Filled with PVC Tube

Jan¹,

Naseer²,

Fahadullah³

et al. 2019

IJEW

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The use of composite materials poly-vinyl chloride (PVC) in construction were studied. The use of PVC plastic pipe for concrete tubing is an alternative to use instead of concrete encased in steel tube and hence improve strength, ductility, durability, economical and environmental friendly. The key application of PVC tubing was its use in high aggressive environments and stop the penetration of chlorine and carbon dioxide directed towards core concrete and defect core concrete. Although the use of PVC as a composite materials in aggressive environments are efficient but PVC behave like brittle materials. The main parameters discussed are geometric and materials properties of thin PVC, stay-inplace formwork, PVC tubing from conventional concrete and rubberize concrete, confinement.

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The work of fracture in uniaxial and biaxial oriented unplasticised polyvinylchloride pipes

Cited by 16 publications

References 14 publications

Application of fracture mechanics for the characterization of PVC pipes. I. Evaluation of the applicability of the EWF technique in specimens produced directly from pipes

Application of fracture mechanics for the characterization of PVC pipes. I. Evaluation of the applicability of the EWF technique in specimens produced directly from pipes

The essential work of fracture characterization of PVC pipes and its correlation to the degree of gelation

Conventional and Rubberize Concrete Cylinders Filled with PVC Tube

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