Feasibility of Nonlinear Ultrasonic Method to Characterize the Aging Degree of Polyethylene Pipes

Chen, Chaolei; Hou, Haoqing; Su, Mingxu; Wang, Shenghui; Jiao, Chaofei; Zhao, Zhifan

doi:10.1007/s11665-022-07496-8

Cited by 3 publications

(3 citation statements)

References 15 publications

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“…The observed decreases in dosage for the 10 g/cm2 shields designed to mitigate high LET radiation (>50 keV/μm, not depicted in the diagram) align with the findings from accelerator measurements (specifically, iron ions at 1 GeV) [4]. In their measurements, it has been observed that the thinner shielding, with a density of 5 g/cm 2 , exhibits approximately a 2% improvement in performance in terms of unit areal density.…”

Section: Radiation Shieldingsupporting

confidence: 72%

“…Polyethylene (PE), a polymer of great significance and utility, has been subject to extensive research as a plastic material [1][2][3][4][5][6]. PE is widely recognized as a highly advantageous plastic material for commercial applications due to its exceptional mechanical properties, notable flexibility, commendable chemical resistance, lightweight nature, favorable thermal stability, and cost-effectiveness [7,8].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis of Polyethylene-Based Materials, Ion Exchanger, Superabsorbent, Radiation Shielding, and Laser Ablation Applications

Hakan Yilmaz,

Ortaç,

Mutlu

et al. 2023

Polyethylene - New Developments and Applications

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Polyethylene (PE), ion exchangers and membranes, super absorbents, radiation shielding, and laser ablation are covered initially. In the second part, studies on polyethylene-based ion exchangers and membranes are given. Ion exchangers and membranes chemically modify copolymers to exchange ions in the electrolyte solution. The third segment covers research on polyethylene-based super absorbent copolymers and composites for water retention and heavy metal contamination removal. Super absorbent polymers are hydrophilic, water-insoluble polymers that absorb plenty of water. With their expansion capacity and user-friendliness, super absorbents are widely used in various fields such as biomedicine, drug distribution, personal care products, batteries, tissue engineering, construction, food packaging, heavy metal separation, electronics, cables, cosmetics, and agriculture. Polyethylene-based polymeric composites are used more to minimize radiation. PE’s high hydrogen concentration absorbs neutrons, making it a radiation shield. Block copolymers of polystyrene-b-poly-ethyleneglycol and boron nitride particles can make selenium dioxide a structural material and radiation barrier when paired with nanostructures. The fourth section examines the optical and conductivity properties of laser-ablated polyethylene nanocomposites with metal oxide nanoparticles. Laser ablation polishes metal, transparent materials, composites with surface and interior changes, and nanomaterials. Polymer laser ablation improves surface modification and thin layer deposition. Laser wavelength affects UHMWPE wettability.

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Section: Radiation Shieldingsupporting

confidence: 72%

Section: Introductionmentioning

confidence: 99%

Synthesis of Polyethylene-Based Materials, Ion Exchanger, Superabsorbent, Radiation Shielding, and Laser Ablation Applications

Hakan Yilmaz,

Ortaç,

Mutlu

et al. 2023

Polyethylene - New Developments and Applications

View full text Add to dashboard Cite

show abstract

“…Currently, methods for characterizing the degree of aging of PE pipes mainly include mechanical property characterization and spectroscopy. In the characterization of mechanical properties, Chen et al [ 4 ] analyzed the change in the nonlinear parameters and tensile properties of PE80 and verified the feasibility of using a nonlinear ultrasonic method to characterize the aging degree of PE pipes. Chen et al [ 5 ] studied the thermal oxidative aging behavior of PE pipes under constant pressure and cyclic pressure at 80, 95, and 110 °C by an accelerated aging test.…”

Section: Introductionmentioning

confidence: 99%

Terahertz Spectroscopy Characterization and Prediction of the Aging Degree of Polyethylene Pipes Based on PLS

Ren

Zhang

et al. 2023

Materials

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Polyethylene (PE) is widely used in pipeline transportation owing to its excellent corrosion resistance, good stability, and ease of processing. As organic polymer materials, PE pipes inevitably undergo different degrees of aging during long-term use. In this study, terahertz time-domain spectroscopy was used to study the spectral characteristics of PE pipes with different degrees of photothermal aging, and the variation in the absorption coefficient with aging time was obtained. The absorption coefficient spectrum was extracted using uninformative variable elimination (UVE), successive projections algorithm (SPA), competitive adaptive reweighted sampling (CARS), and random frog RF spectral screening algorithms, and the spectral slope characteristics of the aging-sensitive band were selected as the evaluation indices of the degree of PE aging. Based on this, a partial least squares aging characterization model was established to predict white PE80, white PE100 and black PE100 pipes with different aging degrees. The results showed that the prediction accuracy of the absorption coefficient spectral slope feature prediction model for the aging degree of different types of pipes was greater than 93.16% and the verification set error was within 13.5 h.

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Data-Driven Urban Gas Pipeline Integrity Detection and Evaluation Technology System

Xiang

Wang

et al. 2023

Processes

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At present, PE pipelines are widely used in urban gas pipeline networks. As pipeline safety is of great importance to the gas supply, this paper focuses on the safety and reliability of PE pipes during service. First of all, this paper analyzes the aging factors of PE materials and the failure forms and mechanisms of PE pipes. Second, the performance testing methods of PE pipelines are summarized, including pipeline pressure tests, pipeline condition inspections, welded joint inspections, mechanical performance tests, and physical performance tests. In addition, life prediction methods for PE pipelines are introduced and analyzed. The methods and applicability of tensile experiments and DSC experiments based on thermal oxygen aging are both analyzed, and the corresponding experiments are also carried out. On the basis of the above research, the technical system of the integrity detection and evaluation of urban gas pipelines is finally established. The system includes the integrity detection method of urban gas pipelines and the applicability evaluation and determination of retest cycles, which can provide a reference for the safe operation of urban gas pipeline networks.

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Feasibility of Nonlinear Ultrasonic Method to Characterize the Aging Degree of Polyethylene Pipes

Cited by 3 publications

References 15 publications

Synthesis of Polyethylene-Based Materials, Ion Exchanger, Superabsorbent, Radiation Shielding, and Laser Ablation Applications

Synthesis of Polyethylene-Based Materials, Ion Exchanger, Superabsorbent, Radiation Shielding, and Laser Ablation Applications

Terahertz Spectroscopy Characterization and Prediction of the Aging Degree of Polyethylene Pipes Based on PLS

Data-Driven Urban Gas Pipeline Integrity Detection and Evaluation Technology System

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